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N-TERMINAL DOMAIN OF SIALOADHESIN (MOUSE) IN COMPLEX WITH GLYCOPEPTIDEN-TERMINAL DOMAIN OF SIALOADHESIN (MOUSE) IN COMPLEX WITH GLYCOPEPTIDE
Structural highlights
FunctionSN_MOUSE Acts as an endocytic receptor mediating clathrin dependent endocytosis. Macrophage-restricted adhesion molecule that mediates sialic-acid dependent binding to lymphocytes, including granulocytes, monocytes, natural killer cells, B-cells and CD8 T-cells (By similarity). Preferentially binds to alpha-2,3-linked sialic acid. Binds to SPN/CD43 on T-cells. May play a role in hematopoiesis. May act as a counter-receptor for CLEC10A in lymph node.[1] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedSialoadhesin is a sialic acid-binding immunoglobulin-like lectin (Siglec), expressed on subsets of macrophages. It is a model system for Siglec receptor-mediated cell surface interactions through binding of sialylated glycoconjugates. The N-terminal sialoadhesin domain can mediate sialic acid-binding on its own. The structure of this domain has been determined in complex with a sialic acid-containing heptapeptide, (Ala-Gly-His-Thr(Neu5Ac)-Trp-Gly-His). The affinity of sialoadhesin for this ligand is four times higher than the affinity for the natural linkage 2,3'-sialyllactose. The structure of the glycopeptide complex suggests strategies for ligand optimization and provides possible explanations for the observed differences in specificities among the Siglecs. Complex of sialoadhesin with a glycopeptide ligand.,Bukrinsky JT, St Hilaire PM, Meldal M, Crocker PR, Henriksen A Biochim Biophys Acta. 2004 Nov 1;1702(2):173-9. PMID:15488769[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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