2it5
From Proteopedia
| Line 1: | Line 1: | ||
| - | [[Image:2it5.gif|left|200px]] | + | [[Image:2it5.gif|left|200px]] |
| - | + | ||
| - | '''Crystal Structure of DCSIGN-CRD with man6''' | + | {{Structure |
| + | |PDB= 2it5 |SIZE=350|CAPTION= <scene name='initialview01'>2it5</scene>, resolution 2.40Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= CD209, CLEC4L ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
| + | }} | ||
| + | |||
| + | '''Crystal Structure of DCSIGN-CRD with man6''' | ||
| + | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
| - | 2IT5 is a [ | + | 2IT5 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IT5 OCA]. |
==Reference== | ==Reference== | ||
| - | Multiple modes of binding enhance the affinity of DC-SIGN for high mannose N-linked glycans found on viral glycoproteins., Feinberg H, Castelli R, Drickamer K, Seeberger PH, Weis WI, J Biol Chem. 2007 Feb 9;282(6):4202-9. Epub 2006 Dec 6. PMID:[http:// | + | Multiple modes of binding enhance the affinity of DC-SIGN for high mannose N-linked glycans found on viral glycoproteins., Feinberg H, Castelli R, Drickamer K, Seeberger PH, Weis WI, J Biol Chem. 2007 Feb 9;282(6):4202-9. Epub 2006 Dec 6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17150970 17150970] |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| Line 22: | Line 31: | ||
[[Category: protein carbohydrate complex]] | [[Category: protein carbohydrate complex]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:33:02 2008'' |
Revision as of 15:33, 20 March 2008
| |||||||
| , resolution 2.40Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | CD209, CLEC4L (Homo sapiens) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of DCSIGN-CRD with man6
Overview
The dendritic cell surface receptor DC-SIGN and the closely related endothelial cell receptor DC-SIGNR specifically recognize high mannose N-linked carbohydrates on viral pathogens. Previous studies have shown that these receptors bind the outer trimannose branch Manalpha1-3[Manalpha1-6]Manalpha present in high mannose structures. Although the trimannoside binds to DC-SIGN or DC-SIGNR more strongly than mannose, additional affinity enhancements are observed in the presence of one or more Manalpha1-2Manalpha moieties on the nonreducing termini of oligomannose structures. The molecular basis of this enhancement has been investigated by determining crystal structures of DC-SIGN bound to a synthetic six-mannose fragment of a high mannose N-linked oligosaccharide, Manalpha1-2Manalpha1-3[Manalpha1-2Manalpha1-6]Manalpha1-6Man and to the disaccharide Manalpha1-2Man. The structures reveal mixtures of two binding modes in each case. Each mode features typical C-type lectin binding at the principal Ca2+-binding site by one mannose residue. In addition, other sugar residues form contacts unique to each binding mode. These results suggest that the affinity enhancement displayed toward oligosaccharides decorated with the Manalpha1-2Manalpha structure is due in part to multiple binding modes at the primary Ca2+ site, which provide both additional contacts and a statistical (entropic) enhancement of binding.
About this Structure
2IT5 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Multiple modes of binding enhance the affinity of DC-SIGN for high mannose N-linked glycans found on viral glycoproteins., Feinberg H, Castelli R, Drickamer K, Seeberger PH, Weis WI, J Biol Chem. 2007 Feb 9;282(6):4202-9. Epub 2006 Dec 6. PMID:17150970
Page seeded by OCA on Thu Mar 20 17:33:02 2008
