This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
1t0p
From Proteopedia
(New page: 200px<br /> <applet load="1t0p" size="450" color="white" frame="true" align="right" spinBox="true" caption="1t0p, resolution 1.66Å" /> '''Structural Basis of...) |
|||
| Line 1: | Line 1: | ||
| - | [[Image:1t0p.gif|left|200px]]<br /> | + | [[Image:1t0p.gif|left|200px]]<br /><applet load="1t0p" size="350" color="white" frame="true" align="right" spinBox="true" |
| - | <applet load="1t0p" size=" | + | |
caption="1t0p, resolution 1.66Å" /> | caption="1t0p, resolution 1.66Å" /> | ||
'''Structural Basis of ICAM recognition by integrin alpahLbeta2 revealed in the complex structure of binding domains of ICAM-3 and alphaLbeta2 at 1.65 A'''<br /> | '''Structural Basis of ICAM recognition by integrin alpahLbeta2 revealed in the complex structure of binding domains of ICAM-3 and alphaLbeta2 at 1.65 A'''<br /> | ||
==Overview== | ==Overview== | ||
| - | Within the Ig superfamily (IgSF), intercellular adhesion molecules (ICAMs) | + | Within the Ig superfamily (IgSF), intercellular adhesion molecules (ICAMs) form a subfamily that binds the leukocyte integrin alphaLbeta2. We report a 1.65-A-resolution crystal structure of the ICAM-3 N-terminal domain (D1) in complex with the inserted domain, the ligand-binding domain of alphaLbeta2. This high-resolution structure and comparisons among ICAM subfamily members establish that the binding of ICAM-3 D1 onto the inserted domain represents a common docking mode for ICAM subfamily members. The markedly different off-rates of ICAM-1, -2, and -3 appear to be determined by the hydrophobicity of residues that surround a metal coordination bond in the alphaLbeta2-binding interfaces. Variation in composition of glycans on the periphery of the interfaces influences on-rate. |
==About this Structure== | ==About this Structure== | ||
| - | 1T0P is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with NAG and MG as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http:// | + | 1T0P is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=NAG:'>NAG</scene> and <scene name='pdbligand=MG:'>MG</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T0P OCA]. |
==Reference== | ==Reference== | ||
| Line 14: | Line 13: | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
| - | [[Category: Liu, J | + | [[Category: Liu, J H.]] |
[[Category: Shimaoko, M.]] | [[Category: Shimaoko, M.]] | ||
[[Category: Song, G.]] | [[Category: Song, G.]] | ||
| - | [[Category: Springer, T | + | [[Category: Springer, T A.]] |
| - | [[Category: Wang, J | + | [[Category: Wang, J H.]] |
| - | [[Category: Yang, Y | + | [[Category: Yang, Y T.]] |
[[Category: MG]] | [[Category: MG]] | ||
[[Category: NAG]] | [[Category: NAG]] | ||
[[Category: rossmann fold; ig-super family domain]] | [[Category: rossmann fold; ig-super family domain]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:08:34 2008'' |
Revision as of 13:08, 21 February 2008
|
Structural Basis of ICAM recognition by integrin alpahLbeta2 revealed in the complex structure of binding domains of ICAM-3 and alphaLbeta2 at 1.65 A
Overview
Within the Ig superfamily (IgSF), intercellular adhesion molecules (ICAMs) form a subfamily that binds the leukocyte integrin alphaLbeta2. We report a 1.65-A-resolution crystal structure of the ICAM-3 N-terminal domain (D1) in complex with the inserted domain, the ligand-binding domain of alphaLbeta2. This high-resolution structure and comparisons among ICAM subfamily members establish that the binding of ICAM-3 D1 onto the inserted domain represents a common docking mode for ICAM subfamily members. The markedly different off-rates of ICAM-1, -2, and -3 appear to be determined by the hydrophobicity of residues that surround a metal coordination bond in the alphaLbeta2-binding interfaces. Variation in composition of glycans on the periphery of the interfaces influences on-rate.
About this Structure
1T0P is a Protein complex structure of sequences from Homo sapiens with and as ligands. Full crystallographic information is available from OCA.
Reference
An atomic resolution view of ICAM recognition in a complex between the binding domains of ICAM-3 and integrin alphaLbeta2., Song G, Yang Y, Liu JH, Casasnovas JM, Shimaoka M, Springer TA, Wang JH, Proc Natl Acad Sci U S A. 2005 Mar 1;102(9):3366-71. Epub 2005 Feb 22. PMID:15728350
Page seeded by OCA on Thu Feb 21 15:08:34 2008
