1im9: Difference between revisions

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[[Image:1im9.jpg|left|200px]]
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[[Image:1im9.png|left|200px]]


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{{STRUCTURE_1im9|  PDB=1im9  |  SCENE=  }}  
{{STRUCTURE_1im9|  PDB=1im9  |  SCENE=  }}  


'''Crystal structure of the human natural killer cell inhibitory receptor KIR2DL1 bound to its MHC ligand HLA-Cw4'''
===Crystal structure of the human natural killer cell inhibitory receptor KIR2DL1 bound to its MHC ligand HLA-Cw4===




==Overview==
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Inhibitory natural killer (NK) cell receptors down-regulate the cytotoxicity of NK cells upon recognition of specific class I major histocompatibility complex (MHC) molecules on target cells. We report here the crystal structure of the inhibitory human killer cell immunoglobulin-like receptor 2DL1 (KIR2DL1) bound to its class I MHC ligand, HLA-Cw4. The KIR2DL1-HLA-Cw4 interface exhibits charge and shape complementarity. Specificity is mediated by a pocket in KIR2DL1 that hosts the Lys80 residue of HLA-Cw4. Many residues conserved in HLA-C and in KIR2DL receptors make different interactions in KIR2DL1-HLA-Cw4 and in a previously reported KIR2DL2-HLA-Cw3 complex. A dimeric aggregate of KIR-HLA-C complexes was observed in one KIR2DL1-HLA-Cw4 crystal. Most of the amino acids that differ between human and chimpanzee KIRs with HLA-C specificities form solvent-accessible clusters outside the KIR-HLA interface, which suggests undiscovered interactions by KIRs.
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{{ABSTRACT_PUBMED_11323700}}


==About this Structure==
==About this Structure==
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[[Category: Immunoglobulin domain]]
[[Category: Immunoglobulin domain]]
[[Category: Protein-protein complex]]
[[Category: Protein-protein complex]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 20:09:11 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 13:31:52 2008''

Revision as of 10:31, 1 July 2008

File:1im9.png

Template:STRUCTURE 1im9

Crystal structure of the human natural killer cell inhibitory receptor KIR2DL1 bound to its MHC ligand HLA-Cw4

Template:ABSTRACT PUBMED 11323700

About this Structure

1IM9 is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structure of the human natural killer cell inhibitory receptor KIR2DL1-HLA-Cw4 complex., Fan QR, Long EO, Wiley DC, Nat Immunol. 2001 May;2(5):452-60. PMID:11323700

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