UniProt functional annotation for P10998

UniProt codes: P68639, P10998.

Organism: Vaccinia virus (strain Copenhagen) (VACV).
Taxonomy: Viruses; Varidnaviria; Bamfordvirae; Nucleocytoviricota; Pokkesviricetes; Chitovirales; Poxviridae; Chordopoxvirinae; Orthopoxvirus; Vaccinia virus.
 
Function: Serves to protect the virus against complement attack by inhibiting both classical and alternative pathways of complement activation. Binds C3b and C4b.
 
Subunit: Heterodimer with A56 protein; disulfide-linked. {ECO:0000250}.
Subcellular location: Virion membrane {ECO:0000250}; Peripheral membrane protein {ECO:0000250}. Host cell membrane {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Extracellular side {ECO:0000250}. Secreted {ECO:0000250}. Note=Component of extracellular enveloped virus (EEV) but not intracellular mature virus (IMV). Anchored to the surface of the outermost membrane of EEV via its interaction with A56 protein (By similarity). {ECO:0000250}.
Similarity: Belongs to the receptors of complement activation (RCA) family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.