Complement C5: Difference between revisions
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<StructureSection load='3pvm' size='340' side='right' caption='Human complement C5 complex (grey and pink) with cobra venom factor (green and yellow) (PDB code [[3pvm]])' scene=''> | <StructureSection load='3pvm' size='340' side='right' caption='Human complement C5 complex (grey and pink) with cobra venom factor (green and yellow) (PDB code [[3pvm]])' scene=''> | ||
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== Function == | |||
'''Complement C5''' (CC5) is the fifth component of the complement system. The complement system is part of the innate immune system. CC5 is composed of α chain (C5a) and β chain (C5b). Proteoplytic degradation of CC5 produces '''anaphylatoxin''' which is a mediator of local inflammatory process. The C terminal domain of CC5 (residues 1530-1676) is homologous to a domain in netrins and is named '''C345C'''. Activation of CC5 by C5 convertase initiates the assembly of the C5 to C9 components into the membrane attack complex. <ref>PMID:18536718</ref> | |||
== Disease == | == Disease == | ||
Mutations in CC5 cause a deficiency leading to severe recurrent infections and are linked to liver fibrosis and rheumatoid arthritis. | Mutations in CC5 cause a deficiency leading to severe recurrent infections and are linked to liver fibrosis, Leiner's disease and rheumatoid arthritis. | ||
</StructureSection> | </StructureSection> | ||
