| Literature DB >> 10026155 |
H Wakabayashi1, S Natsuka, T Mega, N Otsuki, M Isaji, M Naotsuka, S Koyama, T Kanamori, K Sakai, S Hase.
Abstract
O-linked sugar chains with xylose as a reducing end linked to human urinary soluble thrombomodulin were studied. Sugar chains were liberated by hydrazinolysis followed by N-acetylation and tagged with 2-aminopyridine. Two fractions containing pyridylaminated Xyl as a reducing end were collected. Their structures were determined by partial acid hydrolysis, two-dimensional sugar mapping combined with exoglycosidase digestions, methylation analysis, mass spectrometry, and NMR as SO4-3GlcAbeta1-3Galbeta1-3(+/-Siaalpha2-6)Galbeta1+ ++-4Xyl. These sugar chains could bind to an HNK-1 monoclonal antibody. This is believed to be the first example of a proteoglycan linkage tetrasaccharide with glucuronic acid 3-sulfate and sialic acid.Entities:
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Year: 1999 PMID: 10026155 DOI: 10.1074/jbc.274.9.5436
Source DB: PubMed Journal: J Biol Chem ISSN: 0021-9258 Impact factor: 5.157