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1h2q
From Proteopedia
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HUMAN CD55 DOMAINS 3 & 4
Contents |
Overview
Decay-accelerating factor (CD55), a regulator of the alternative and classical pathways of complement activation, is expressed on all serum-exposed cells. It is used by pathogens, including many enteroviruses and uropathogenic Escherichia coli, as a receptor prior to infection. We describe the x-ray structure of a pathogen-binding fragment of human CD55 at 1.7 A resolution containing two of the three domains required for regulation of human complement. We have used mutagenesis to map biological functions onto the molecule; decay-accelerating activity maps to a single face of the molecule, whereas bacterial and viral pathogens recognize a variety of different sites on CD55.
Disease
Known diseases associated with this structure: Blood group Cromer OMIM:[125240], Blood group, Knops system OMIM:[120620], CR1 deficiency OMIM:[120620], Malaria, severe, resistance to OMIM:[120620], SLE susceptibility OMIM:[120620]
About this Structure
1H2Q is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Mapping CD55 function. The structure of two pathogen-binding domains at 1.7 A., Williams P, Chaudhry Y, Goodfellow IG, Billington J, Powell R, Spiller OB, Evans DJ, Lea S, J Biol Chem. 2003 Mar 21;278(12):10691-6. Epub 2002 Dec 22. PMID:12499389
Page seeded by OCA on Thu Feb 21 12:56:44 2008
Categories: Homo sapiens | Single protein | Billington, J. | Chaudhry, Y. | Evans, D J. | Goodfellow, I G. | Lea, S M. | Powell, R. | Spiller, O B. | Williams, P. | Alternative splicing | Bacterial receptor | Complement decay accelerating factor | Complement pathway | Enteroviral receptor | Gpi-anchor | Ligand for cd97
