| Literature DB >> 12787029 |
Noriko Takahashi1, Katsuyoshi Masuda, Kenji Hiraki, Kazuo Yoshihara, Hung-Hsiang Huang, Kay-Hooi Khoo, Koichi Kato.
Abstract
To determine the glycoforms of squid rhodopsin, N-glycans were released by glycoamidase A digestion, reductively aminated with 2-aminopyridine, and then subjected to 2D HPLC analysis [Takahashi, N., Nakagawa, H., Fujikawa, K., Kawamura, Y. & Tomiya, N. (1995) Anal. Biochem.226, 139-146]. The major glycans of squid rhodopsin were shown to possess the alpha1-3 and alpha1-6 difucosylated innermost GlcNAc residue found in glycoproteins produced by insects and helminths. By combined use of 2D HPLC, electrospray ionization-mass spectrometry and permethylation and gas chromatography-electron ionization mass spectrometry analyses, it was revealed that most (85%) of the N-glycans exhibit the novel structure Manalpha1-6(Manalpha1-3)Manbeta1-4GlcNAcbeta1-4(Galbeta1-4Fucalpha1-6)(Fucalpha1-3)GlcNAc.Entities:
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Year: 2003 PMID: 12787029 DOI: 10.1046/j.1432-1033.2003.03636.x
Source DB: PubMed Journal: Eur J Biochem ISSN: 0014-2956