Updated on 2026/05/10

写真a

 
NATSUKA Shunji
 
Organization
Academic Assembly Institute of Science and Technology CHIKYU SEIBUTSU KAGAKU KEIRETU Professor
Graduate School of Science and Technology Life and Food Sciences Professor
Faculty of Science Department of Science Professor
Title
Professor
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Degree

  • 博士(医学) ( 1992.3   大阪大学 )

  • 理学修士 ( 1988.3   大阪大学 )

  • 理学士 ( 1986.3   大阪大学 )

Research Interests

  • biochemistry

  • glycobiology

  • carbohydrate chemistry

  • developmental biology

  • zebrafish

  • glycomics

  • evolution

  • glycan

  • glycosyltransferase

  • phylogeny

  • database

  • Glycan Sequencer

Research Areas

  • Life Science / Functional biochemistry

  • Life Science / Structural biochemistry

Research History (researchmap)

  • Niigata University   Department of Biology, Faculty of Science   Professor

    2009.9

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  • Osaka University   Department of Chemistry, Graduate School of Science   Associate Professor

    2004.3 - 2009.8

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  • Kyoto Institute of Technology   Department of Applied Biology   Associate Professor

    2003.10 - 2004.2

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  • Kyoto Institute of Technology   Department of Applied Biology   Assistant Professor

    1999.3 - 2003.9

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  • University of Michigan   Howard Hughes Medical Institute   Research Associate

    1992.10 - 1994.9

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  • Osaka University   Department of Chemistry, Faculty of Science   Research Associate

    1992.4 - 1999.2

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Research History

  • Niigata University   Faculty of Science Department of Science   Professor

    2017.4

  • Niigata University   Graduate School of Science and Technology Life and Food Sciences   Professor

    2009.9

  • Niigata University   Graduate School of Science and Technology Life and Food Sciences   Professor

    2009.9

  • Niigata University   Abolition organization Molecular and Cellular Science   Professor

    2009.9 - 2017.3

Education

  • Osaka University   Graduate School of Medicine   Department of Physiology

    1988.4 - 1992.3

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    Country: Japan

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  • Osaka University   Graduate School of Science   Department of Organic Chemistry

    1986.4 - 1988.3

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    Country: Japan

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  • Osaka University   Faculty of Science   Department of Chemistry

    1982.4 - 1986.3

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    Country: Japan

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Professional Memberships

  • THE JAPANESE BIOCHEMICAL SOCIETY

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  • THE JAPANESE SOCIETY OF CARBOHYDRATE RESEARCH

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Papers

  • Increased levels of acidic free-N-glycans, including multi-antennary and fucosylated structures, in the urine of cancer patients. International journal

    Ken Hanzawa, Miki Tanaka-Okamoto, Hiroko Murakami, Noriko Suzuki, Mikio Mukai, Hidenori Takahashi, Takeshi Omori, Kenji Ikezawa, Kazuyoshi Ohkawa, Masayuki Ohue, Shunji Natsuka, Yasuhide Miyamoto

    PloS one   17 ( 4 )   e0266927   2022

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    We recently reported increased levels of urinary free-glycans in some cancer patients. Here, we focused on cancer related alterations in the levels of high molecular weight free-glycans. The rationale for this study was that branching, elongation, fucosylation and sialylation, which lead to increases in the molecular weight of glycans, are known to be up-regulated in cancer. Urine samples from patients with gastric cancer, pancreatic cancer, cholangiocarcinoma and colorectal cancer and normal controls were analyzed. The extracted free-glycans were fluorescently labeled with 2-aminopyridine and analyzed by multi-step liquid chromatography. Comparison of the glycan profiles revealed increased levels of glycans in some cancer patients. Structural analysis of the glycans was carried out by performing chromatography and mass spectrometry together with enzymatic or chemical treatments. To compare glycan levels between samples with high sensitivity and selectivity, simultaneous measurements by reversed-phase liquid chromatography-selected ion monitoring of mass spectrometry were also performed. As a result, three lactose-core glycans and 78 free-N-glycans (one phosphorylated oligomannose-type, four sialylated hybrid-type and 73 bi-, tri- and tetra-antennary complex-type structures) were identified. Among them, glycans with α1,3-fucosylation ((+/- sialyl) Lewis X), triply α2,6-sialylated tri-antennary structures and/or a (Man3)GlcNAc1-core displayed elevated levels in cancer patients. However, simple α2,3-sialylation and α1,6-core-fucosylation did not appear to contribute to the observed increase in the level of glycans. Interestingly, one tri-antennary free-N-glycan that showed remarkable elevation in some cancer patients contained a unique Glcβ1-4GlcNAc-core instead of the common GlcNAc2-core at the reducing end. This study provides further insights into free-glycans as potential tumor markers and their processing pathways in cancer.

    DOI: 10.1371/journal.pone.0266927

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  • Toward robust N-glycomics of various tissue samples that may contain glycans with unknown or unexpected structures Reviewed

    Noriko Suzuki, Tatsuya Abe, Ken Hanzawa, Shunji Natsuka

    Scientific Reports   11   6334   2021.3

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  • Sequential modification of glycans by linkage-specific alkylamidation of sialic acids and permethylation Reviewed International journal

    Tatsuya Abe, Akihiko Kameyama, Shunji Natsuka, Noriko Suzuki

    Analytical Biochemistry   606   113861 - 113861   2020.10

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    Permethylation is useful for glycosidic linkage analysis, but is often accompanied by a large proportion of by-products, especially for glycans containing sialic acids (Sia). Unlike hydroxyl groups of glycans, which are converted to stable methyl ethers by permethylation, the carboxylic acids on Sia are converted to methyl esters, which are easily reversible to carboxylate under alkaline conditions. To overcome this problem, we used linkage-specific alkylamidation to protect Sia prior to the permethylation. This method not only decreased the levels of by-products, but also enabled us to distinguish isomers of α2,3- and α2,6-Sia while simultaneously determining other glycosidic linkages.

    DOI: 10.1016/j.ab.2020.113861

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  • Characterisation of N-glycans in the epithelial-like tissue of the rat cochlea. Reviewed International journal

    Yoriko Nonomura, Seishiro Sawamura, Ken Hanzawa, Takashi Nishikaze, Sadanori Sekiya, Taiga Higuchi, Fumiaki Nin, Satoru Uetsuka, Hidenori Inohara, Shujiro Okuda, Eiji Miyoshi, Arata Horii, Sugata Takahashi, Shunji Natsuka, Hiroshi Hibino

    Scientific reports   9 ( 1 )   1551 - 1551   2019.2

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    Membrane proteins (such as ion channels, transporters, and receptors) and secreted proteins are essential for cellular activities. N-linked glycosylation is involved in stability and function of these proteins and occurs at Asn residues. In several organs, profiles of N-glycans have been determined by comprehensive analyses. Nevertheless, the cochlea of the mammalian inner ear, a tiny organ mediating hearing, has yet to be examined. Here, we focused on the stria vascularis, an epithelial-like tissue in the cochlea, and characterised N-glycans by liquid chromatography with mass spectrometry. This hypervascular tissue not only expresses several ion transporters and channels to control the electrochemical balance in the cochlea but also harbours different transporters and receptors that maintain structure and activity of the organ. Seventy-nine N-linked glycans were identified in the rat stria vascularis. Among these, in 55 glycans, the complete structures were determined; in the other 24 species, partial glycosidic linkage patterns and full profiles of the monosaccharide composition were identified. In the process of characterisation, several sialylated glycans were subjected sequentially to two different alkylamidation reactions; this derivatisation helped to distinguish α2,3-linkage and α2,6-linkage sialyl isomers with mass spectrometry. These data should accelerate elucidation of the molecular architecture of the cochlea.

    DOI: 10.1038/s41598-018-38079-0

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  • Quantitative LC-MS and MS/MS analysis of sialylated glycans modified by linkage-specific alkylamidation Reviewed

    Noriko Suzuki, Tatsuya Abe, Shunji Natsuka

    Analytical Biochemistry   567   117 - 127   2019

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  • Preparation of a molecular library of branched β-glucan oligosaccharides derived from laminarin Reviewed

    Shunji Natsuka, Aki Tachibana, Wataru Sumiyoshi, Shin-ichi Nakakita, Noriko Suzuki

    Journal of Applied Glycoscience   65 ( 4 )   45 - 49   2018

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  • Structures and developmental alterations of N-glycans of zebrafish embryos Reviewed

    Ken Hanzawa, Noriko Suzuki, Shunji Natsuka

    GLYCOBIOLOGY   27 ( 3 )   228 - 245   2017.3

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    DOI: 10.1093/glycob/cww124

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  • Improved Method for Drawing of a Glycan Map, and the First Page of Glycan Atlas, Which Is a Compilation of Glycan Maps for a Whole Organism Reviewed

    Shunji Natsuka, Mayumi Masuda, Wataru Sumiyoshi, Shin-ichi Nakakita

    PLOS ONE   9 ( 7 )   e102219   2014.7

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    DOI: 10.1371/journal.pone.0102219

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  • Determination of galactosamine impurities in heparin sodium using fluorescent labeling and conventional high-performance liquid chromatography Reviewed

    Satsuki Itoh, Yoko Hiruta, Noritaka Hashii, Naho Fujita, Toru Natsuga, Toshiaki Hattori, Aya Bando, Yuko Sekimoto, Kazuyoshi Miyata, Hiroshi Namekawa, Kazunori Mabuchi, Toru Sakai, Hirotoshi Shimahashi, Kenzo Kawai, Hikaru Yoden, Sadatoshi Koyama, Susanne Odgaard Herr, Shunji Natsuka, Teruhide Yamaguchi, Nana Kawasaki

    BIOLOGICALS   41 ( 6 )   355 - 363   2013.11

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    DOI: 10.1016/j.biologicals.2013.06.002

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  • Hypothetical Roles of Glycan Diversity in Evolution Reviewed

    Shunji Natsuka

    TRENDS IN GLYCOSCIENCE AND GLYCOTECHNOLOGY   25 ( 143 )   125 - 131   2013.5

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  • One-Step Purification Method for Pyridylamino Glycans Reviewed

    Shunji Natsuka

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   76 ( 10 )   1982 - 1983   2012.10

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    DOI: 10.1271/bbb.120388

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  • A Convenient Purification Method for Pyridylamino Monosaccharides Reviewed

    Shunji Natsuka

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   75 ( 7 )   1405 - 1407   2011.7

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    DOI: 10.1271/bbb.110233

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  • A comparative study of monosaccharide composition analysis as a carbohydrate test for biopharmaceuticals Reviewed

    Akira Harazono, Tetsu Kobayashi, Nana Kawasaki, Satsuki Itoh, Minoru Tada, Noritaka Hashii, Akiko Ishii, Teruyo Arato, Shigehiro Yanagihara, Yuki Yagi, Akiko Koga, Yuriko Tsuda, Mikiko Kimura, Masashi Sakita, Satoshi Kitamura, Hideto Yamaguchi, Hisashi Mimura, Yoshimi Murata, Yasuki Hamazume, Takayuki Sato, Shunji Natsuka, Kazuaki Kakehi, Mitsuhiro Kinoshita, Sakie Watanabe, Teruhide Yamaguchi

    BIOLOGICALS   39 ( 3 )   171 - 180   2011.5

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    DOI: 10.1016/j.biologicals.2011.04.002

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  • beta-Galactosidases from Jack Bean and Streptococcus Have Different Cleaving Abilities towards Fucose-Containing Sugars Reviewed

    Tomoharu Takeuchi, Ken-ichi Sugiura, Kazusa Nishiyama, Hideyo Takahashi, Hideaki Natsugari, Yoichiro Akata, Shunji Natsuka, Ken-ichi Kasai

    BIOLOGICAL & PHARMACEUTICAL BULLETIN   34 ( 4 )   567 - 569   2011.4

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    DOI: 10.1248/bpb.34.567

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  • Structural analysis of N-glycans of the planarian Dugesia japonica Reviewed

    Shunji Natsuka, Yukiko Hirohata, Shin-ichi Nakakita, Wataru Sumiyoshi, Sumihiro Hase

    FEBS JOURNAL   278 ( 3 )   452 - 460   2011.2

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    DOI: 10.1111/j.1742-4658.2010.07966.x

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  • N-Glycosylation patterns of hemolymph glycoproteins from Biomphalaria glabrata strains expressing different susceptibility to Schistosoma mansoni infection Reviewed

    Tobias Lehr, Sandra Frank, Shunji Natsuka, Hildegard Geyer, Knut Beuerlein, Michael J. Doenhoff, Sumihiro Hase, Rudolf Geyer

    EXPERIMENTAL PARASITOLOGY   126 ( 4 )   592 - 602   2010.12

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    DOI: 10.1016/j.exppara.2010.06.031

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  • Involvement of murine beta-1,4-galactosyltransferase V in lactosylceramide biosynthesis Reviewed

    Tadahiro Kumagai, Takeshi Sato, Shunji Natsuka, Yukito Kobayashi, Dapeng Zhou, Tadashi Shinkai, Satoru Hayakawa, Kiyoshi Furukawa

    GLYCOCONJUGATE JOURNAL   27 ( 7-9 )   685 - 695   2010.10

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    DOI: 10.1007/s10719-010-9313-2

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  • The och1 Mutant of Schizosaccharomyces pombe Produces Galactosylated Core Structures of N-Linked Oligosaccharides Reviewed

    Takao Ohashi, Yuka Ikeda, Naotaka Tanaka, Shin-ichi Nakakita, Shunji Natsuka, Yuko Giga-Hama, Kaoru Takegawa

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   73 ( 2 )   407 - 414   2009.2

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    DOI: 10.1271/bbb.80712

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  • Biochemical characterization of plasma-derived tissue factor pathway inhibitor: post-translational modification of free, full-length form with particular reference to the sugar chain Reviewed

    Y. Mori, T. Hamuro, T. Nakashima, T. Hamamoto, S. Natsuka, S. Hase, S. Iwanaga

    JOURNAL OF THROMBOSIS AND HAEMOSTASIS   7 ( 1 )   111 - 120   2009.1

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    DOI: 10.1111/j.1538-7836.2008.03222.x

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  • Free oligosaccharides with Lewis x structure expressed in the segmentation period of zebrafish embryo Reviewed

    Kazunobu Moriguchi, Tatsuya Takemoto, Takafumi Aoki, Shin-ichi Nakakita, Shunji Natsuka, Sumihiro Hase

    JOURNAL OF BIOCHEMISTRY   142 ( 2 )   213 - 227   2007.8

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    DOI: 10.1093/jb/mvm128

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  • Structure determination of a sulfated N-glycans, candidate for a precursor of the selectin ligand in bovine lung Reviewed

    Tomonori Murakami, Shunji Natsuka, Shin-ichi Nakakita, Sumihiro Hase

    GLYCOCONJUGATE JOURNAL   24 ( 4-5 )   195 - 206   2007.7

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    DOI: 10.1007/s10719-006-9026-8

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  • Gas-phase pyridylamination of saccharides: Development and applications Reviewed

    Shin-Ichi Nakakita, Wataru Sumiyoshi, Nobumitsu Miyanishi, Shunji Natsuka, Sumihiro Hase, Jun Hirabayashi

    ANALYTICAL CHEMISTRY   79 ( 7 )   2674 - 2679   2007.4

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    DOI: 10.1021/ac0700878

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  • Comparative biochemical study of N-linked glycans from skin of a squid, Todarodes pacificus Reviewed

    Shunji Natsuka, Miwa Ishida, Akira Ichikawa, Koji Ikura, Sumihiro Hase

    JOURNAL OF BIOCHEMISTRY   140 ( 1 )   87 - 93   2006.7

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    DOI: 10.1093/jb/mvj131

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  • EDEM3, a soluble EDEM homolog, enhances glycoprotein endoplasmic reticulum-associated degradation and mannose trimming Reviewed

    K Hirao, Y Natsuka, T Tamura, Wada, I, D Morito, S Natsuka, P Romero, B Sleno, LO Tremblay, A Herscovics, K Nagata, N Hosokawa

    JOURNAL OF BIOLOGICAL CHEMISTRY   281 ( 14 )   9650 - 9658   2006.4

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    DOI: 10.1074/jbc.M512191200

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  • Structural diversity of cytosolic free oligosaccharides in the human hepatoma cell line, HepG2 Reviewed

    K Yanagida, S Natsuka, S Hase

    GLYCOBIOLOGY   16 ( 4 )   294 - 304   2006.4

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    DOI: 10.1093/glycob/cwj074

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  • Alteration of brain type N-glycans in neurological mutant mouse brain Reviewed

    S Nakakita, S Natsuka, J Okamoto, K Ikenaka, S Hase

    JOURNAL OF BIOCHEMISTRY   138 ( 3 )   277 - 283   2005.9

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    DOI: 10.1093/jb/mvi125

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  • Comparative biochemical view of N-glycans Reviewed

    S Natsuka

    TRENDS IN GLYCOSCIENCE AND GLYCOTECHNOLOGY   17 ( 97 )   229 - 236   2005.9

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  • Characterization of wheat germ agglutinin ligand on soluble glycoproteins in Caenorhabditis elegans Reviewed

    S Natsuka, M Kawaguchi, Y Wada, A Ichikawa, K Ikura, S Hase

    JOURNAL OF BIOCHEMISTRY   138 ( 2 )   209 - 213   2005.8

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    DOI: 10.1093/jb/mvi117

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  • Expression of complex-type N-glycans in developmental periods of zebrafish embryo Reviewed

    T Takemoto, S Natsuka, S Nakakita, S Hase

    GLYCOCONJUGATE JOURNAL   22 ( 1-2 )   21 - 26   2005.2

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    DOI: 10.1007/s10719-005-0189-5

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  • In vitro modification of betaine-homocysteine S-methyltransferase by tissue-type transglutaminase Reviewed

    A Ichikawa, Y Ohashi, S Terada, S Natsuka, K Ikura

    INTERNATIONAL JOURNAL OF BIOCHEMISTRY & CELL BIOLOGY   36 ( 10 )   1981 - 1992   2004.10

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    DOI: 10.1016/j.biocel.2004.02.014

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  • Precise recognition of “brain-type” 1-4galactosyltransferase Reviewed

    Nakakita S, Natsuka S, Ikenaka K, Hase S

    Japan Journal of Electrophoresis   48 ( 1 )   1 - 4   2004

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    We have reported two brain-specific agalactobiantennary <i>N</i>-linked sugar chains with the bisecting GlcNAc and α1-6Fuc residues, (GlcNAcβ1-2)<sub>0 or 1</sub>Manα1-3(GlcNAcβ1-2Manα1-6)(GlcNAcβ1-4)Manβ1-4GlcNAcβ1-4(Fucα1-6)GlcNAc [Shimizu, H., Ochiai, K., Ikenaka, K., Mikoshiba, K., and Hase, S. (1993) <i>J. Biochem</i>. 114, 334-338]. Here, the reason of the absence of Gal on the sugar chains was analyzed through the detection of the other complex type sugar chains in brain. Sia-Gal or Gal on the GlcNAc residues of brain-specific agalactobiantennary <i>N</i>-linked sugar chains was not found. We therefore have investigated the substrate specificity of galactosyltransferase activities in brain by using as acceptor substrates pyridylamino derivatives of agalactobiantennary sugar chains with structural variations in the bisecting GlcNAc and α1-6Fuc residues. While the β1-4galactosyltransferases in liver and kidney could utilize all nine oligosaccharides as substrates, the β1-4galactosyltransferase(s) in brain could not utilize the agalactobiantennary sugar chain with both the bisecting GlcNAc and Fuc residues, but could utilize the other three acceptors. Similar results were obtained using glycopeptides with the agalactobiantennary sugar chains with or without the bisecting GlcNAc and α1-6Fuc residues as substrates. The β1-4galactosyltransferase activity of adult mouse brain thus appears to be responsible for producing the brain specific sugar chains and different from β1-4galactosyltransferase-I.

    DOI: 10.2198/sbk.48.1

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  • Caenorhabditis elegans as a model animal of glycobiology: accumulation of structure information Reviewed

    S Natsuka

    SEIKAGAKU   75 ( 2 )   131 - 133   2003.2

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  • Identification of an endo-beta-N-acetylglucosaminidase gene in Caenorhabditis elegans and its expression in Escherichia coli Reviewed

    T Kato, K Fujita, M Takeuchi, K Kobayashi, S Natsuka, K Ikura, H Kumagai, Y Yamamoto

    GLYCOBIOLOGY   12 ( 10 )   581 - 587   2002.10

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    DOI: 10.1093/glycob/cwf073

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  • Co(II)-regulated substrate specificity of cytosolic alpha-mannosidase Reviewed

    M Yamagishi, T Ishimizu, S Natsuka, S Hase

    JOURNAL OF BIOCHEMISTRY   132 ( 2 )   253 - 256   2002.8

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  • Inhibition of transglutaminase by synthetic tyrosine melanin Reviewed

    K Ikura, C Otomo, S Natsuka, A Ichikawa, K Wakamatsu, S Ito, S Taoguchi

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   66 ( 6 )   1412 - 1414   2002.6

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    DOI: 10.1271/bbb.66.1412

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  • Structural analysis of N-linked Glycans in Caenorhabditis elegans Reviewed

    S Natsuka, J Adachi, M Kawaguchi, S Nakakita, S Hase, A Ichikawa, K Ikura

    JOURNAL OF BIOCHEMISTRY   131 ( 6 )   807 - 813   2002.6

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  • Method for purification of fluorescence-labeled oligosaccharides by pyridylamination Reviewed

    S Natsuka, J Adachi, M Kawaguchi, A Ichikawa, K Ikura

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   66 ( 5 )   1174 - 1175   2002.5

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    DOI: 10.1271/bbb.66.1174

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  • Analysis of oligosaccharide structures of glycoproteins in polyacrylamide gel Reviewed

    S Nakakita, D Ama, S Natsuka, S Hase

    ANALYTICAL BIOCHEMISTRY   303 ( 2 )   206 - 209   2002.4

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    DOI: 10.1006/abio.2002.5583

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  • A monoclonal antibody to cyclomaltoheptaose (beta-cyclodextrin): Characterization and use for immunoassay of beta-cyclodextrin and its derivatives Reviewed

    K Ikura, J Fujimoto, K Kubonishi, S Natsuka, H Hashimoto, T Ito, K Fujita

    CYTOTECHNOLOGY   40 ( 1-3 )   23 - 29   2002

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    DOI: 10.1023/A:1023997501517

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  • Co-overexpression of folding modulators improves the solubility of the recombinant guinea pig liver transglutaminase expressed in Escherichia coli Reviewed

    K Ikura, T Kokubu, S Natsuka, A Ichikawa, M Adachi, K Nishihara, H Yanagi, S Utsumi

    PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY   32 ( 2 )   189 - 205   2002

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    DOI: 10.1081/PB-120004130

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  • Analysis of glycan expression by fluorescence labeling method Reviewed

    Natsuka S

    Japan Journal of Electrophoresis   46 ( 2 )   35 - 38   2002

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    The pyridylamination method was originally described in 1978 as a means of analyzing glycan structures with high-sensitivity. Subsequently, the method has been applied to structure analyses of glycans including glycosidase digestion, 2D-mapping by various kinds of HPLC's, partial acetolysis, Smith degradation, methylation analysis, nuclear magnetic resonance, mass spectrometry, and affinity assay for lectins. Glycans on glycoconjugates are liberated by hydrazinolysis followed by N-acetylation. Reducing ends of the released glycans are tagged with 2-aminopyridine by reductive amination. Pyridylamino (PA-) derivatives of glycans with fluorescence and a positive charge have the following advantages: 1. high sensitivity in detection; 2. excellent separation in reversed phase HPLC; 3. high chemical stability under the conditions for structure elucidation; 4. applicable to many authentic methods for glycan analysis.

    DOI: 10.2198/sbk.46.35

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  • Molecular cloning and expression of Caenorhabditis elegans ERp57-homologue with transglutaminase activity Reviewed

    S Natsuka, R Takubo, R Seki, K Ikura

    JOURNAL OF BIOCHEMISTRY   130 ( 6 )   731 - 735   2001.12

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    DOI: 10.1093/oxfordjournals.jbchem.a003042

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  • Structural analysis of the sugar chains of human urinary thrombomodulin Reviewed

    H Wakabayashi, S Natsuka, M Honda, M Naotsuka, Y Ito, J Kajihara, S Hase

    JOURNAL OF BIOCHEMISTRY   130 ( 4 )   543 - 552   2001.10

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  • Chemical structures of C. elegans O-glycans Reviewed

    S Natsuka

    TRENDS IN GLYCOSCIENCE AND GLYCOTECHNOLOGY   13 ( 73 )   551 - 553   2001.9

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  • High molecular weight transglutaminase inhibitor produced by a microorganism (Streptomyces lavendulae Y-200) Reviewed

    K Ikura, K Minami, C Otomo, H Hashimoto, S Natsuka, K Oda, K Nakanishi

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   64 ( 1 )   116 - 124   2000.1

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    DOI: 10.1271/bbb.64.116

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  • beta 1-4Galactosyltransferase activity of mouse brain as revealed by analysis of brain-specific complex-type N-linked sugar chains Reviewed

    S Nakakita, KK Menon, S Natsuka, K Ikenaka, S Hase

    JOURNAL OF BIOCHEMISTRY   126 ( 6 )   1161 - 1169   1999.12

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    DOI: 10.1093/oxfordjournals.jbchem.a022562

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  • A pyridylamination method aimed at automatic oligosaccharide analysis of N-linked sugar chains Reviewed

    K Yanagida, S Natsuka, S Hase

    ANALYTICAL BIOCHEMISTRY   274 ( 2 )   229 - 234   1999.10

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    DOI: 10.1006/abio.1999.4263

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  • Presence of asparagine-linked N-acetylglucosamine and chitobiose in Pyrus pyrifolia S-RNases associated with gametophytic self-incompatibility Reviewed

    T Ishimizu, Y Mitsukami, T Shinkawa, S Natsuka, S Hase, M Miyagi, F Sakiyama, S Norioka

    EUROPEAN JOURNAL OF BIOCHEMISTRY   263 ( 3 )   624 - 634   1999.8

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    DOI: 10.1046/j.1432-1327.1999.00499.x

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  • Molecular cloning and characterization of two zebrafish alpha(1,3)fucosyltransferase genes developmentally regulated in embryogenesis Reviewed

    N Kageyama, S Natsuka, S Hase

    JOURNAL OF BIOCHEMISTRY   125 ( 4 )   838 - 845   1999.4

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  • Novel proteoglycan linkage tetrasaccharides of human urinary soluble thrombomodulin, SO4-3GlcA beta 1-3Gal beta 1-3(+/- Sia alpha 2-6)Gal beta 1-4Xyl Reviewed

    H Wakabayashi, S Natsuka, T Mega, N Otsuki, M Isaji, M Naotsuka, S Koyama, T Kanamori, K Sakai, S Hase

    JOURNAL OF BIOLOGICAL CHEMISTRY   274 ( 9 )   5436 - 5442   1999.2

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    DOI: 10.1074/jbc.274.9.5436

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  • Partial purification and characterization of a novel endo-beta-mannosidase acting on N-linked sugar chains from Lilium longflorum thumb Reviewed

    A Sasaki, M Yamagishi, T Mega, S Norioka, S Natsuka, S Hase

    JOURNAL OF BIOCHEMISTRY   125 ( 2 )   363 - 367   1999.2

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  • Systematic analysis of N-linked sugar chains from whole tissue employing partial automation Reviewed

    Fujimoto, I, KK Menon, Y Otake, F Tanaka, H Wada, H Takahashi, S Tsuji, S Natsuka, S Nakakita, S Hase, K Ikenaka

    ANALYTICAL BIOCHEMISTRY   267 ( 2 )   336 - 343   1999.2

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    DOI: 10.1006/abio.1998.2968

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  • Development-dependent expression of complex-type sugar chains specific to mouse brain Reviewed

    S Nakakita, S Natsuka, K Ikenaka, S Hase

    JOURNAL OF BIOCHEMISTRY   123 ( 6 )   1164 - 1168   1998.6

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  • Analysis of N- and O-glycans by pyridylamination.

    S. Natsuka, S. Hase

    Methods in molecular biology (Clifton, N.J.)   76   101 - 113   1998

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    DOI: 10.1385/0-89603-355-4:101

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  • Purification and characterization of neutral alpha-mannosidase from hen oviduct: Studies on the activation mechanism of Co2+ Reviewed

    K Yamashiro, H Itoh, M Yamagishi, S Natsuka, T Mega, S Hase

    JOURNAL OF BIOCHEMISTRY   122 ( 6 )   1174 - 1181   1997.12

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  • Structures of the sugar chains of recombinant macrophage colony-stimulating factor produced in Chinese hamster ovary cells Reviewed

    Y Ushida, S Natsuka, Y Shimokawa, Z Takatsu, S Shimamura, S Hase

    JOURNAL OF BIOCHEMISTRY   122 ( 1 )   148 - 156   1997.7

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  • Detection of UDP-D-Xylose: alpha-D-xyloside alpha 1-&gt;3Xylosyltransferase activity in human hepatoma cell line HepG2 Reviewed

    S Minamida, K Aoki, S Natsuka, K Omichi, K Fukase, S Kusumoto, S Hase

    JOURNAL OF BIOCHEMISTRY   120 ( 5 )   1002 - 1006   1996.11

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  • The fucosyltransferase FucT-VII regulates E-selectin ligand synthesis in human T cells Reviewed

    RN Knibbs, RA Craig, S Natsuka, A Chang, M Cameron, JB Lowe, LM Stoolman

    JOURNAL OF CELL BIOLOGY   133 ( 4 )   911 - 920   1996.5

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    DOI: 10.1083/jcb.133.4.911

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  • Expression of the alpha(1,3)fucosyltransferase Fuc-TVII in lymphoid aggregate high endothelial venules correlates with expression of L-selectin ligands Reviewed

    PL Smith, KM Gersten, B Petryniak, RJ Kelly, C Rogers, Y Natsuka, JA Alford, EP Scheidegger, S Natsuka, JB Lowe

    JOURNAL OF BIOLOGICAL CHEMISTRY   271 ( 14 )   8250 - 8259   1996.4

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    DOI: 10.1074/jbc.271.14.8250

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  • MOLECULAR-CLONING, EXPRESSION, CHROMOSOMAL ASSIGNMENT, AND TISSUE-SPECIFIC EXPRESSION OF A MURINE ALPHA-(1,3)-FUCOSYL-TRANSFERASE LOCUS CORRESPONDING TO THE HUMAN ELAM-1 LIGAND FUCOSYL-TRANSFERASE Reviewed

    KM GERSTEN, S NATSUKA, M TRINCHERA, B PETRYNIAK, RJ KELLY, N HIRAIWA, NA JENKINS, DJ GILBERT, NG COPELAND, JB LOWE

    JOURNAL OF BIOLOGICAL CHEMISTRY   270 ( 42 )   25047 - 25056   1995.10

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    DOI: 10.1074/jbc.270.42.25047

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  • FUCOSYL-TRANSFERASES SERVING IN BIOSYNTHESIS OF SELECTIN LIGANDS Reviewed

    S NATSUKA

    SEIKAGAKU   67 ( 5 )   368 - 372   1995.5

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  • ENZYMES INVOLVED IN MAMMALIAN OLIGOSACCHARIDE BIOSYNTHESIS Reviewed

    S NATSUKA, JB LOWE

    CURRENT OPINION IN STRUCTURAL BIOLOGY   4 ( 5 )   683 - 691   1994.10

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  • MOLECULAR-CLONING OF A CDNA-ENCODING A NOVEL HUMAN-LEUKOCYTE ALPHA-1,3-FUCOSYL-TRANSFERASE CAPABLE OF SYNTHESIZING THE SIALYL-LEWIS-X DETERMINANT Reviewed

    S NATSUKA, KM GERSTEN, K ZENITA, R KANNAGI, JB LOWE

    JOURNAL OF BIOLOGICAL CHEMISTRY   269 ( 24 )   16789 - 16794   1994.6

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  • STRUCTURE-FUNCTION ANALYSIS OF HUMAN IL-6 RECEPTOR - DISSOCIATION OF AMINO-ACID-RESIDUES REQUIRED FOR IL-6-BINDING AND FOR IL-6 SIGNAL TRANSDUCTION THROUGH GP130 Reviewed

    H YAWATA, K YASUKAWA, S NATSUKA, M MURAKAMI, K YAMASAKI, M HIBI, T TAGA, T KISHIMOTO

    EMBO JOURNAL   12 ( 4 )   1705 - 1712   1993.4

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  • MACROPHAGE DIFFERENTIATION-SPECIFIC EXPRESSION OF NF-IL6, A TRANSCRIPTION FACTOR FOR INTERLEUKIN-6 Reviewed

    S NATSUKA, S AKIRA, Y NISHIO, S HASHIMOTO, T SUGITA, H ISSHIKI, T KISHIMOTO

    BLOOD   79 ( 2 )   460 - 466   1992.1

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  • REGULATION OF EXPRESSION OF THE INTERLEUKIN-6 GENE - STRUCTURE AND FUNCTION OF THE TRANSCRIPTION FACTOR NF-IL6 Reviewed

    S AKIRA, H ISSHIKI, T NAKAJIMA, S KINOSHITA, Y NISHIO, S NATSUKA, T KISHIMOTO

    CIBA FOUNDATION SYMPOSIA   167   47 - 67   1992

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  • A NUCLEAR FACTOR FOR THE IL-6 GENE (NF-IL6) Reviewed

    S AKIRA, H ISSHIKI, T NAKAJIMA, S KINOSHITA, Y NISHIO, S HASHIMOTO, S NATSUKA, T KISHIMOTO

    CHEMICAL IMMUNOLOGY   51   299 - 322   1992

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  • AUGMENTATION OF HAPTOGLOBIN PRODUCTION IN HEP3B CELL-LINE BY A NUCLEAR FACTOR NF-IL6 Reviewed

    S NATSUKA, H ISSHIKI, S AKIRA, T KISHIMOTO

    FEBS LETTERS   291 ( 1 )   58 - 62   1991.10

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    DOI: 10.1016/0014-5793(91)81103-F

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  • INTERLEUKIN-6 RECEPTOR AND A UNIQUE MECHANISM OF ITS SIGNAL TRANSDUCTION Reviewed

    T TAGA, M HIBI, Y HIRATA, H YAWATA, S NATSUKA, K YASUKAWA, T TOTSUKA, K YAMASAKI, T HIRANO, T KISHIMOTO

    IMMUNOLOGICAL RECOGNITION, PTS 1 AND 2   54   713 - 722   1989

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  • STRUCTURES OF SUGAR CHAINS OF A PARA-NITROPHENYL ACETATE-HYDROLYZING ESTERASE FROM THE MICROSOMES OF RAT-LIVER Reviewed

    S NATSUKA, M HIMENO, S HASE, H ITO, T UEDA, K KATO, T IKENAKA

    JOURNAL OF BIOCHEMISTRY   103 ( 6 )   986 - 991   1988.6

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  • IDENTIFICATION METHOD FOR 12 OLIGOMANNOSE-TYPE SUGAR CHAINS THOUGHT TO BE PROCESSING INTERMEDIATES OF GLYCOPROTEINS Reviewed

    S HASE, S NATSUKA, H OKU, T IKENAKA

    ANALYTICAL BIOCHEMISTRY   167 ( 2 )   321 - 326   1987.12

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    DOI: 10.1016/0003-2697(87)90171-0

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  • FLUORESCENCE METHOD FOR THE STRUCTURAL-ANALYSIS OF OLIGOMANNOSE-TYPE SUGAR CHAINS BY PARTIAL ACETOLYSIS Reviewed

    S NATSUKA, S HASE, T IKENAKA

    ANALYTICAL BIOCHEMISTRY   167 ( 1 )   154 - 159   1987.11

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    DOI: 10.1016/0003-2697(87)90146-1

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Books

  • Glycoscience : basic science to applications : insights from the Japan consortium for glycobiology and glycotechnology (JCGG)

    Shunji Natsuka( Role: Contributor ,  Genetic modification: small fish (zebrafish and medaka))

    Springer  2019  ( ISBN:9789811358555

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    Total pages:xv, 405 p.   Language:English

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  • 未来を創るグライコサイエンス ―我が国のロードマップ―

    長束俊治( Role: Contributor ,  糖鎖機能解析のキーテクノロジー:遺伝子改変:小型魚類(4))

    日本糖鎖科学コンソーシアム  2018.5 

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  • 生物薬科学実験講座,糖質Ⅱ糖タンパク質実験法

    長束 俊治, 長谷 純宏( Role: Contributor ,  二次元HPLCマッピングと溶出の規則性,プロトン核磁気共鳴(1H-NMR))

    廣川書店  2011 

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  • ピリジルアミノ化による糖鎖解析-糖鎖多様性の解析に向けて

    長谷 純宏, 長束 俊治, 中北 愼一, 石水 毅( Role: Joint author)

    大阪大学出版会  2009.3  ( ISBN:4872592697

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    Total pages:141  

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  • 生物薬科学実験講座,糖質Ⅰ基本実験操作法

    長束 俊治, 長谷 純宏( Role: Contributor ,  蛍光標識による糖組成分析,蛍光標識,PA-糖鎖の逆相カラムによる分離と精製,陰イオン交換HPLCによるPA-糖鎖の分離)

    廣川書店  2009 

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  • Experimental Glycoscience: Glycochemistry

    NATSUKA Shunji( Role: Joint author ,  “Release of O-glycans by chemical methods”, “Separation of oligosaccharides by 2D HPLC”, “Equilibrium dialysis”)

    Springer  2008 

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  • タンパク質修飾解析プロトコール

    長束 俊治, 長谷 純宏( Role: Joint author ,  O-結合型糖鎖の構造解析)

    羊土社  2005 

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  • 未来を拓く糖鎖科学

    長束 俊治( Role: Joint author ,  糖タンパク質よりO-結合型糖鎖の化学的切り出し,オリゴ糖の2次元HPLCによる分離,平衡透析を用いた糖鎖-タンパク質相互作用の解析)

    金芳堂  2005 

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  • 糖鎖科学の新展開

    長束 俊治( Role: Joint author ,  糖鎖分析の統合オペレーティングシステムとしてのピリジルアミノ化法)

    NTS  2005 

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  • ポストゲノムの糖鎖生物学がわかる

    長束 俊治( Role: Joint author ,  アスパラギン結合型糖鎖の多様性形成機構)

    羊土社  2002 

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  • Glycoanalysis Protocols

    NATSUKA Shunji, HASE Sumihiro( Role: Joint author ,  Analysis of N- and O-glycans by pyridylamination)

    Humana Press  1998 

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  • グライコバイオロジー実験プロトコール

    長束 俊治, 長谷 純宏( Role: Joint author ,  ピリジルアミノ(PA)化法による糖鎖の蛍光標識と分離)

    秀潤社  1996 

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  • 糖―その多様性を探る

    長束 俊治, 長谷 純宏( Role: Joint author ,  ピリジルアミノ化法による糖鎖の高感度分析)

    化学同人  1992 

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MISC

  • 希少糖を含む分泌型糖ペプチド Invited Reviewed

    長束 俊治

    化学と生物   57 ( 1 )   5 - 6   2019.1

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  • N-Glycosylation Patterns of Hemolymph Glycoproteins from Biomphalaria Glabrata Strains Expressing Different Susceptibility to Schistosoma Mansoni Infection

    Tobias Lehr, Sandra Frank, Shunji Natsuka, Hildegard Geyer, Knut Beuerlein, Michael J. Doenhoff, Sumihiro Hase, Rudolf Geyer

    GLYCOBIOLOGY   20 ( 11 )   1524 - 1524   2010.11

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  • Preface for a Special Issue Entitled "Chemical Biology of Glycans"

    NATSUKA Shunji

    17 ( 97 )   191 - 192   2005.9

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  • Functional analysis of EDEM homologue protein

    Yuko Natsuka, Kazuyoshi Hirao, Junji Nakamura, Taku Tamura, Ikuo Wada, Shunji Natsuka, Nobuko Hosokawa, Kazuhiro Nagata

    CELL STRUCTURE AND FUNCTION   30   47 - 47   2005.6

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  • EDEM 可溶性ホモログ EDEM3はマンノシダーゼ活性を介してERADを促進する Reviewed

    長束優子, 平尾和義, 中村純治, 田村拓, 和田郁夫, 長束俊治, 細川暢子, 永田和宏

    第25回日本糖質学会年会, 大津市, 2005. 7. 20-22   2005

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  • Cloning, expression, and characterization of EDEM homolog proteins

    Y Natsuka, K Hirao, J Nakamura, S Natsuka, N Hosokawa, K Nagata

    GLYCOBIOLOGY   14 ( 11 )   1110 - 1111   2004.11

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  • Structure analysis of invertebrate N-glycans by comparative biochemical view

    S Natsuka, S Hase

    GLYCOBIOLOGY   14 ( 11 )   1205 - 1205   2004.11

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  • EDEM ホモログ蛋白質 の機能解析 Reviewed

    長束優子, 平尾和義, 中村純治, 田村拓, 和田郁夫, 長束俊治, 細川暢子, 永田和宏

    第77 回日本生化学会大会(2004.10.15. 横浜市)   2004

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  • Automated analysis of sugar chains of glycoproteins in mouse brains

    Fujimoto, I, F Tanaka, S Natsuka, S Hase, K Ikenaka

    JOURNAL OF NEUROCHEMISTRY   69   S165 - S165   1997

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  • 微量糖蛋白質からのピリジルアミノ化糖鎖の簡便な調製法

    柳田 寛太, 長束 俊治, 長谷 純宏

    日本分子生物学会年会プログラム・講演要旨集   19   218 - 218   1996.8

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  • FUCOSYL-TRANSFERASES IN THE SYNTHESIS OF SELECTIN LIGANDS ON T-CELL

    RN KNIBBS, RA CRAIG, S NATSUKA, A THALL, M CAMERON, JB LOWE, LM STOOLMAN

    FASEB JOURNAL   9 ( 3 )   A34 - A34   1995.3

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  • 白血球ホーミングにおけるフコース転移酵素の役割

    長束 俊治

    細胞工学   14 ( 4 )   437 - 442   1995

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  • MOLECULAR-CLONING OF A CDNA-ENCODING A NOVEL HUMAN-LEUKOCYTE ALPHA-1,3-FUCOSYL-TRANSFERASE CAPABLE OF SYNTHESIZING THE SIALYL-LEWIS-X DETERMINANT (VOL 269, PG 16789, 1994)

    S NATSUKA, KM GERSTEN, K ZENITA, R KANNAGI, JB LOWE

    JOURNAL OF BIOLOGICAL CHEMISTRY   269 ( 32 )   20806 - 20806   1994.8

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  • MOLECULAR-GENETICS OF MAMMALIAN FUCOSYL-TRANSFERASES

    JB LOWE, DJ LEGAULT, RJ KELLY, PL SMITH, S NATSUKA, Y NATSUKA, P MALY, B PETRYNIAK, D GIORGI, S ROUQUIER, G LENNON, N HIRAIWA

    JOURNAL OF CELLULAR BIOCHEMISTRY   259 - 259   1994

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  • STRUCTURE AND FUNCTION OF MAMMALIAN GLYCOSYLTRANSFERASE GENES

    JB LOWE, BW WESTON, RJ KELLY, RD LARSEN, Y NATSUKA, S NATSUKA, N HIRAIWA, KM GERSTEN, PL SMITH, DJ LEGAULT

    GLYCOCONJUGATE JOURNAL   10 ( 4 )   232 - 232   1993.8

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  • ピリジルアミノ化法による糖鎖の高感度分析 (糖--その多様性を探る) -- (構造解析・分析)

    長束 俊治, 長谷 純宏

    化学 増刊   ( 122 )   p125 - 132   1992.12

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  • REGULATION OF EXPRESSION OF THE INTERLEUKIN-6 GENE - STRUCTURE AND FUNCTION OF THE TRANSCRIPTION FACTOR NF-IL6 Reviewed

    S AKIRA, H ISSHIKI, T NAKAJIMA, S KINOSHITA, Y NISHIO, S NATSUKA, T KISHIMOTO

    POLYFUNCTIONAL CYTOKINES : IL-6 AND LIF   167   47 - 67   1992

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  • INTERLEUKIN-6 RECEPTOR AND A UNIQUE MECHANISM OF ITS SIGNAL TRANSDUCTION Reviewed

    T TAGA, M HIBI, Y HIRATA, H YAWATA, S NATSUKA, K YASUKAWA, T TOTSUKA, K YAMASAKI, T HIRANO, T KISHIMOTO

    COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY   54   713 - 722   1989

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  • Interleukin 6 and its receptor

    Toshio Hirano, Tetsuya Taga, Katsuhiko Yamasaki, Tadashi Matsuda, Sachiko Suematsu, Bo Tang, Yukihiko Hirata, Hideo Yawata, Masahiko Hibi, Shunji Natsuka, Shizuo Akira, Kazuyuki Yoshizaki, M. Kawano, Kenichi Yamamura, Tadamitsu Kishimoto

    Recent Progress in Cytokine Research   265 - 285   1989

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Awards

  • 日本糖質学会奨励賞

    2004.8  

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  • 日本生化学会JB論文賞

    2000.10  

    長束 俊治

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Research Projects

  • Studies on glycopeptides containing a rare sugar 6-deoxyaltrose secreted from vertebrate embryos

    Grant number:20K06539

    2020.4 - 2023.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

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  • Development of methods for making glycan atlas, and data collection for database publishing

    Grant number:15K06991

    2015.4 - 2018.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    Natsuka Shunji, SUZUKI Noriko

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    Grant amount:\5200000 ( Direct Cost: \4000000 、 Indirect Cost:\1200000 )

    A preparing method for glycan atlas, which is a comprehensive database of glycan structure and expression level, was adapted to glycan molecules of various forms. Using this method, we succeeded in comprehensively analyzing the changes in glycan structure during the embryonic development of zebrafish, and some of these results have been published. On the other hand, we also succeeded to accumulate data on structure and expression level by analyzing glycan structure of glycoproteins and animal tissues and published on internet as 2 dimensional glycan maps. This study overcame the technical problems for producing of mice and human glycan atlases.

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  • Study on glycans related to embryogenesis of vertebrates

    Grant number:14580625

    2002 - 2004

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    NATSUKA Shunji

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    Grant amount:\3000000 ( Direct Cost: \3000000 )

    We have analyzed expression period and substrate specificity of zebrafish a(1,3)fucosyltransferase (zFT1). As a results, the zFT1 expressed specifically during segmentation period of embryogenesis, and could synthesize Lewis x structure, but not sialyl Lewis x or Lewis a structures. The zFT1 preferred to transfer fucose residue to inner N-acetyllactosamine unit rather than the terminal unit when tandem tri-N-acetyllactosamine oligosaccharide was used as a substrate. The results of in situ hybridization showed that the zFT1 expressed dispersedly at neural tube and around. We have investigated the structure of N-linked glycans expressed in zebrafish embryo. The expression of biantenna-complex-type glycans was remarkably increased from segmentation period. We searched also Lewis x-containing glycans, and found that the biantenna-complex-type glycans had one or two Lewis x structures at their non-reducing end. Those glycans expressed in segmentation period simultaneously with zFI1. We discovered unusual glycan structure that had additional Galb1-4 residue attached to N-acetyllactosamine structure, and also free oligosaccharides with similar structure. As a result of searching for core proteins of Lewis x containing biantenna-complex-type glycans, a glycoprotein with a molecular weight of 62,000 was found as a carrier protein from zebrafish embryos in segmentation period. We designated the glycoprotein as zGP62. Furthermore, we measured the zFT1 activity against Galb1-4Galb1-4GlcNAcb1-R structure, and zFT1 could not utilized that structure as a substrate. Thus it was speculated that the Galb1-4Galb1-4GlcNAcb1-R structure was synthesized by an unknown b1-4galactosyltransferase which could act on Lewis x structure.

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  • 神経細胞変性疾患に関わる蛋白質架橋酵素の構造と機能の研究

    Grant number:12780453

    2000 - 2001

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    Awarding organization:日本学術振興会

    長束 俊治

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    Grant amount:\1900000 ( Direct Cost: \1900000 )

    前年度までの研究によって、2種の組織型トランスグルタミナーゼのオープンリーディングフレームを含む遺伝子断片をヒト脳由来cDNAから単離することに成功している。この2種類の遺伝子を用いて、大腸菌の系でリコンビナントタンパク質の発現を試みた。前年度の研究によって、不溶型のリコンビナントタンパク質を大量に調製することに成功しているので、これを抗原に用いて、ヒト脳型トランスグルタミナーゼ特異的抗体の作製を行った。マウスを免疫した結果、ELISA分析により特異的な抗体を検出することができたので、現在、抗ヒト脳型トランスグルタミナーゼモノクローナル抗体産生ハイブリドーマ株の樹立を行っている。また一方、リコンビナントタンパク質の酵素化学的およびタンパク質化学的性質の詳細な解析を行うために、可溶化条件の検討を行った。その結果、インビトロにおいて、ほぼ定量的に可溶性リコンビナントタンパク質を得ることができたが、酵素比活性は自然型の酵素よりもかなり低かった。これは、可溶化はされたものの、自然型酵素のホールディングを再現できなかったためと考えられたので、各種シャペロンタンパク質を宿主大腸菌内で強制発現させることにより、リコンビナントタンパク質の可溶化と正しいホールディングの効率を上げることを試みた。その結果、従来の発現系よりも可溶性の比率を増加させ、また比活性も高いリコンビナントトランスグルタミナーゼを得ることに成功した。

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  • 胚に特異的な糖鎖を生合成するフコース転移酵素の遺伝子クローニングと発現部位の検索

    Grant number:10780368

    1998 - 1999

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    Awarding organization:日本学術振興会

    長束 俊治

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    Grant amount:\2200000 ( Direct Cost: \2200000 )

    前年度に遺伝子の単離を行った2種類のゼブラフィッシュフコース転移酵素の基質特異性を解析した。発現ベクターに組み込んだ遺伝子を培養細胞に導入し、酵素を発現させた後、紬胞を溶解して酵素元とした。基質として1型構造糖鎖、2型構造糖鎖、シアル酸の付いた2型構造糖鎖を用いたところ、2型構造糖鎖のみにフコースを転移した。この基質特異性は、脊椎動物の胚における存在が酵素学的な研究から指摘されているフコース転移酵素と一致している。前年度に示した本酵素遺伝子の胚における特異的な発現と合わせて、我々がクローニングした遺伝子は、以前より多くの糖鎖研究者によって探し求められてきた、胚特異的ルイスx糖鎖を生合成するフコース転移酵素であることが強く示唆された。胚特異的ルイスx糖鎖は、特に神経外胚葉に強く発現しており、神経系の発生に重要な役割を果たしていることが示唆されている。現在、本酵素遺伝子の詳細な発現部位の特定を目指して、in situハイブリダイゼーション法による分析を行っている。
    次に、本酵素によって生合成されて胚細胞で発現している糖鎖の構造解析を目的として、ゼブラフィッシュ胚で特異的に発現しているフコシルオリゴ糖鎖の検索を行った。N-配糖体とO-配糖体をともにピリジルアミノ化による2次元マッピング法で展開し、フコシダーゼ消化と組み合わせてスクリーニングしたところ、O-配糖体の9グルコース単位の画分にフコース転移酵素の発現時期と一致して発現しているフコシルオリゴ糖鎖を確認できた。

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  • ゼブラフィッシュの胚発生において特異的に発現する糖鎖の検索とその構造解析

    Grant number:08780559

    1996

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    Awarding organization:日本学術振興会

    長束 俊治

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    Grant amount:\1100000 ( Direct Cost: \1100000 )

    1.ゼブラフィッシュの受精卵を種々の時間培養して胚発生を進行させた後に、各発生段階の卵を調製した。この受精卵からヒドラジン分解とピリジルアミノ化法の組み合わせによって蛍光標識した糖蛋白質糖鎖を調製する方法を確立した。
    2.受精後すぐから48時間後に孵化するまでの受精卵に存在する糖蛋白質糖鎖の構造解析を行ったところ、マンノース9個を持つオリゴマンノース型糖鎖が最も多く存在しており、その他にもマンノース7から8個やマンノース9個にグルコース1個を持つオリゴマンノース型糖鎖も相当量存在していることを発見した。しかしこれら受精卵中に比較的多量に含まれる糖鎖は、分析した胚発生時期には顕著な量的変化は示さなかった。一方、微量糖鎖は他種類観測された。それら微量糖鎖の中には、発生の進行とともに顕著な量的増減を示す物があった。
    3.以上のように観測された糖鎖が受精卵中の、どの部位に由来するのかを解析するために、受精卵の微小解剖の方法を確立した。受精卵を被う卵膜を切り取って除いた後、卵黄と細胞を分離し、胚細胞を精製した。この精製した胚細胞を用いることにより、胚の分化発生に直接関わっている糖鎖の解析が可能となった。

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  • ホスファチジルイノシトール・グリカンの糖鎖構造解析

    Grant number:07858069

    1995

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    Awarding organization:日本学術振興会

    長束 俊治

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    Grant amount:\900000 ( Direct Cost: \900000 )

    1.亜硝酸脱アミノ化とピリジルアミノ化の反応条件を設定するために、グルコサミンを用いて至適条件を検討した。50mM亜硝酸溶液中で25℃、16時間亜硝酸脱アミノ化し、次いで蒸発乾固の後、定法よりも穏和な条件でピリジルアミノ化を行い、40%の収率でグルコサミンから2,5‐アンヒドロマンノースを得る系を確立した。
    2.ラット肝臓より、溶媒抽出によって脂質画分を調製し、前述の方法に従って亜硝酸による脱アミノ化を行い、目的のホスファチジルイノシトール・グリカン(PIG)から糖鎖部分を分離した。分離したオリゴ糖をピリジルアミノ化によって蛍光標識し、ゲル濾過によって過剰の試薬を除去した。こうしてクル-ドなPIG糖鎖画分を得た。還元末端糖分析の結果、ゲル濾過カラム体積の約100%に相当する部分に、2,5‐アンヒドロマンノースを還元末端にもつオリゴ糖が検出された。このオリゴ糖を精製するために、まずサイズが分画HPLCで展開したところ目的の糖鎖は3.1グルコース単位の位置に溶出されてきた。さらに精製を進めるために、逆相HPLCに供したところ、単一ピークにまで精製することができた。
    3.得られたPIG由来ピリジルアミノ化オリゴ糖の構造解析を行った。酸加水分解して還元末端糖分析を行ったところ、2,5‐アンヒドロマンノースが検出されたので、脱アミノ化前の還元末端は、グルコサミンだと推定された。さらに糖水解酵素消化と糖組成分析を行い、糖鎖構造解析を行った。

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Teaching Experience (researchmap)

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Teaching Experience

  • 生物化学(理)

    2025
    Institution name:新潟大学

  • インターンシップ特別実習b

    2024
    Institution name:新潟大学

  • インターンシップ特別実習a

    2024
    Institution name:新潟大学

  • 生物学実習I

    2022
    Institution name:新潟大学

  • 生物学実習II

    2022
    Institution name:新潟大学

  • 日本事情自然系A

    2022
    Institution name:新潟大学

  • 糖鎖科学特論

    2022
    Institution name:新潟大学

  • 理学スタディ・スキルズ

    2022
    Institution name:新潟大学

  • 生物学実験

    2021
    Institution name:新潟大学

  • 生物学特論I

    2021
    Institution name:新潟大学

  • 基礎生命科学セミナー

    2021
    Institution name:新潟大学

  • 科学・技術と社会

    2019
    -
    2021
    Institution name:新潟大学

  • 総合力アクティブ・ラーニング

    2019
    Institution name:新潟大学

  • 課題研究II(生物学)

    2018
    Institution name:新潟大学

  • 自然科学基礎実験

    2017
    Institution name:新潟大学

  • 生物学基礎実習b

    2017
    Institution name:新潟大学

  • 課題研究I(生物学)

    2017
    Institution name:新潟大学

  • 生物学総合演習

    2017
    Institution name:新潟大学

  • 生物化学I(理)

    2017
    -
    2024
    Institution name:新潟大学

  • 理学スタディ・スキルズ

    2017
    -
    2022
    Institution name:新潟大学

  • 生物学基礎演習

    2017
    Institution name:新潟大学

  • 生体分子機能学実習

    2016
    Institution name:新潟大学

  • 生命科学への招待(生物学学習法)

    2016
    -
    2017
    Institution name:新潟大学

  • 生命・食料科学博士特定研究Ⅱ

    2015
    Institution name:新潟大学

  • 生命・食料科学博士セミナーⅡ

    2015
    Institution name:新潟大学

  • 基礎生命科学(博士)演習(中間発表)

    2015
    Institution name:新潟大学

  • 基礎生物科学実習I

    2014
    -
    2016
    Institution name:新潟大学

  • 外国語論文解説・討論Ⅰ

    2014
    Institution name:新潟大学

  • 生命・食料科学博士特定研究Ⅰ

    2014
    Institution name:新潟大学

  • 生命・食料科学博士セミナーⅠ

    2014
    Institution name:新潟大学

  • 生物学特論Ⅵ

    2014
    Institution name:新潟大学

  • 生物化学I

    2013
    -
    2016
    Institution name:新潟大学

  • 文献詳読Ⅱ

    2013
    -
    2015
    Institution name:新潟大学

  • 研究発表演習(中間発表)

    2013
    -
    2015
    Institution name:新潟大学

  • 生命・食料科学セミナーBⅡ

    2013
    -
    2015
    Institution name:新潟大学

  • 生物学実習

    2013
    Institution name:新潟大学

  • 生命科学のための基礎化学

    2012
    -
    2023
    Institution name:新潟大学

  • 課題研究I(生物学科)

    2012
    -
    2016
    Institution name:新潟大学

  • 生命・食料科学セミナーBⅠ

    2012
    -
    2015
    Institution name:新潟大学

  • 生命・食料科学特定研究BⅠ

    2012
    -
    2015
    Institution name:新潟大学

  • 生命・食料科学特定研究BⅡ

    2012
    -
    2015
    Institution name:新潟大学

  • 文献詳読Ⅰ

    2012
    -
    2015
    Institution name:新潟大学

  • 生物化学II

    2012
    Institution name:新潟大学

  • リサーチキャンプ

    2012
    Institution name:新潟大学

  • 生物学実験 I

    2011
    -
    2018
    Institution name:新潟大学

  • 細胞生物学演習

    2011
    -
    2013
    Institution name:新潟大学

  • 自然科学総論Ⅳ

    2011
    Institution name:新潟大学

  • 生物学特論II B

    2011
    Institution name:新潟大学

  • 基礎生物化学

    2010
    Institution name:新潟大学

  • 生物化学演習

    2010
    Institution name:新潟大学

  • 生物学基礎B

    2010
    Institution name:新潟大学

  • 糖鎖生物学

    2010
    Institution name:新潟大学

  • 糖鎖科学特論

    2010
    -
    2022
    Institution name:新潟大学

  • 日本事情自然系A

    2010
    -
    2022
    Institution name:新潟大学

  • 課題研究II

    2010
    -
    2016
    Institution name:新潟大学

  • 生物化学実習

    2010
    -
    2015
    Institution name:新潟大学

  • 基礎生物科学実習II

    2010
    -
    2014
    Institution name:新潟大学

  • 生物化学

    2010
    -
    2011
    Institution name:新潟大学

  • 課題研究I

    2010
    -
    2011
    Institution name:新潟大学

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