Substrate-induced conformational changes in glycosyltransferases. (記事/論文, 2005) [WorldCat.org]
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Substrate-induced conformational changes in glycosyltransferases.
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Substrate-induced conformational changes in glycosyltransferases.

著者: Pradman K Qasba 所属: Structural Glycobiology Section, Laboratory of Experimental and Computational Biology, CCR, NCI-Frederick, MD 21702, USA. qsaba@helix.nih.gov; Boopathy Ramakrishnan; Elizabeth Boeggeman
エディション/フォーマット: 記事/論文 記事/論文 : English
ソース:Trends in biochemical sciences, v30 n1 (200501): 53-62
その他のデータベース: WorldCat
概要:
Oligosaccharide chains of glycoproteins, glycolipids and glycosaminoglycans are synthesized by glycosyltransferases by the transfer of specific glycosyl moieties from activated sugar-nucleotide donors to specific acceptors. Structural studies on several of these enzymes have shown that one or two flexible loops at the substrate-binding site of the enzymes undergo a marked conformational change from an open to a  続きを読む
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ドキュメントの種類 記事/論文
すべての著者/寄与者: Pradman K Qasba 所属: Structural Glycobiology Section, Laboratory of Experimental and Computational Biology, CCR, NCI-Frederick, MD 21702, USA. qsaba@helix.nih.gov; Boopathy Ramakrishnan; Elizabeth Boeggeman
ISSN:0968-0004
言語注記: English
固有識別子 110328847
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概要:

Oligosaccharide chains of glycoproteins, glycolipids and glycosaminoglycans are synthesized by glycosyltransferases by the transfer of specific glycosyl moieties from activated sugar-nucleotide donors to specific acceptors. Structural studies on several of these enzymes have shown that one or two flexible loops at the substrate-binding site of the enzymes undergo a marked conformational change from an open to a closed conformation on binding the donor substrate. This conformational change, in which the loop acts as a lid covering the bound donor substrate, creates an acceptor-binding site. After the glycosyl unit is transferred from the donor to the acceptor, the saccharide product is ejected and the loop reverts to its native conformation, thereby releasing the remaining nucleotide moiety. The specificity of the sugar donor is determined by a few residues in the sugar-nucleotide-binding pocket of the enzyme that are conserved among the family members from different species.

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