Aliases for CD55 Gene
External Ids for CD55 Gene
Previous HGNC Symbols for CD55 Gene
Previous GeneCards Identifiers for CD55 Gene
This gene encodes a glycoprotein involved in the regulation of the complement cascade. Binding of the encoded protein to complement proteins accelerates their decay, thereby disrupting the cascade and preventing damage to host cells. Antigens present on this protein constitute the Cromer blood group system (CROM). Alternative splicing results in multiple transcript variants. The predominant transcript variant encodes a membrane-bound protein, but alternatively spliced transcripts may produce soluble proteins. [provided by RefSeq, Jul 2014]
GeneCards Summary for CD55 Gene
CD55 (CD55 Molecule (Cromer Blood Group)) is a Protein Coding gene. Diseases associated with CD55 include Complement Hyperactivation, Angiopathic Thrombosis, And Protein-Losing Enteropathy and Blood Group, Cromer System. Among its related pathways are Presynaptic function of Kainate receptors and Complement and coagulation cascades. Gene Ontology (GO) annotations related to this gene include lipid binding and virus receptor activity. An important paralog of this gene is CR2.
UniProtKB/Swiss-Prot Summary for CD55 Gene
This protein recognizes C4b and C3b fragments that condense with cell-surface hydroxyl or amino groups when nascent C4b and C3b are locally generated during C4 and c3 activation. Interaction of daf with cell-associated C4b and C3b polypeptides interferes with their ability to catalyze the conversion of C2 and factor B to enzymatically active C2a and Bb and thereby prevents the formation of C4b2a and C3bBb, the amplification convertases of the complement cascade (PubMed:7525274). Inhibits complement activation by destabilizing and preventing the formation of C3 and C5 convertases, which prevents complement damage (PubMed:28657829).
(Microbial infection) Acts as a receptor for Coxsackievirus A21, coxsackieviruses B1, B3 and B5.
(Microbial infection) Acts as a receptor for Human enterovirus 70 and D68 (Probable).
(Microbial infection) Acts as a receptor for Human echoviruses 6, 7, 11, 12, 20 and 21.