1uct

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{{Structure
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1uct FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1uct OCA], [http://www.ebi.ac.uk/pdbsum/1uct PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1uct RCSB]</span>
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'''Crystal structure of the extracellular fragment of Fc alpha Receptor I (CD89)'''
'''Crystal structure of the extracellular fragment of Fc alpha Receptor I (CD89)'''
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[[Category: Yang, M.]]
[[Category: Yang, M.]]
[[Category: Zhang, W.]]
[[Category: Zhang, W.]]
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[[Category: beta stand]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 11:03:00 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 00:08:32 2008''
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Revision as of 08:03, 3 May 2008

Image:1uct.jpg

Template:STRUCTURE 1uct

Crystal structure of the extracellular fragment of Fc alpha Receptor I (CD89)


Overview

Human FcalphaRI (CD89) is the receptor specific for IgA, an immunoglobulin that is abundant in mucosa and is also found in high concentrations in serum. Although FcalphaRI is an immunoglobulin Fc receptor (FcR), it differs in many ways from FcRs for other immunoglobulin classes. The genes of most FcRs are located on chromosome 1 at 1q21-23, whereas FcalphaRI is on chromosome 19, at 19q13.4, a region called the leukocyte receptor complex, because it is clustered with several leukocyte receptor families including killer cell inhibitory receptors (KIRs) and leukocyte Ig-like receptors (LIRs). The amino acid sequence of FcalphaRI shares only 20% homology with other FcRs but it has around 35% homology with its neighboring LIRs and KIRs. In this work, we analyzed the crystal structure of the ectodomain of FcalphaRI and examined structure similarities between FcalphaRI and KIR2DL1, KIR2DL2 and LIR-1. Our data show that FcalphaRI, KIRs, and LIRs share a common hydrophobic core in their interdomain interface, and FcalphaRI is evolutionally closer to LIR than KIR.

About this Structure

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

Reference

Crystal structure of the ectodomain of human FcalphaRI., Ding Y, Xu G, Yang M, Yao M, Gao GF, Wang L, Zhang W, Rao Z, J Biol Chem. 2003 Jul 25;278(30):27966-70. Epub 2003 Jun 3. PMID:12783876 Page seeded by OCA on Sat May 3 11:03:00 2008

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