1sl6

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{{STRUCTURE_1sl6| PDB=1sl6 | SCENE= }}
{{STRUCTURE_1sl6| PDB=1sl6 | SCENE= }}
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'''Crystal Structure of a fragment of DC-SIGNR (containg the carbohydrate recognition domain and two repeats of the neck) complexed with Lewis-x.'''
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===Crystal Structure of a fragment of DC-SIGNR (containg the carbohydrate recognition domain and two repeats of the neck) complexed with Lewis-x.===
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==Overview==
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Both the dendritic cell receptor DC-SIGN and the closely related endothelial cell receptor DC-SIGNR bind human immunodeficiency virus and enhance infection. However, biochemical and structural comparison of these receptors now reveals that they have very different physiological functions. By screening an extensive glycan array, we demonstrated that DC-SIGN and DC-SIGNR have distinct ligand-binding properties. Our structural and mutagenesis data explain how both receptors bind high-mannose oligosaccharides on enveloped viruses and why only DC-SIGN binds blood group antigens, including those present on microorganisms. DC-SIGN mediates endocytosis, trafficking as a recycling receptor and releasing ligand at endosomal pH, whereas DC-SIGNR does not release ligand at low pH or mediate endocytosis. Thus, whereas DC-SIGN has dual ligand-binding properties and functions both in adhesion and in endocytosis of pathogens, DC-SIGNR binds a restricted set of ligands and has only the properties of an adhesion receptor.
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The line below this paragraph, {{ABSTRACT_PUBMED_15195147}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 15195147 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15195147}}
==About this Structure==
==About this Structure==
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[[Category: C-type lectin]]
[[Category: C-type lectin]]
[[Category: Dc-signr]]
[[Category: Dc-signr]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:50:36 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 00:11:09 2008''

Revision as of 21:11, 27 July 2008

Image:1sl6.png

Template:STRUCTURE 1sl6

Crystal Structure of a fragment of DC-SIGNR (containg the carbohydrate recognition domain and two repeats of the neck) complexed with Lewis-x.

Template:ABSTRACT PUBMED 15195147

About this Structure

1SL6 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structural basis for distinct ligand-binding and targeting properties of the receptors DC-SIGN and DC-SIGNR., Guo Y, Feinberg H, Conroy E, Mitchell DA, Alvarez R, Blixt O, Taylor ME, Weis WI, Drickamer K, Nat Struct Mol Biol. 2004 Jul;11(7):591-8. Epub 2004 Jun 13. PMID:15195147

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