8b0h
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2C9, C5b9-CD59 cryoEM structure2C9, C5b9-CD59 cryoEM structure
Structural highlights
DiseaseCD59_HUMAN Defects in CD59 are the cause of CD59 deficiency (CD59D) [MIM:612300.[1] FunctionCD59_HUMAN Potent inhibitor of the complement membrane attack complex (MAC) action. Acts by binding to the C8 and/or C9 complements of the assembling MAC, thereby preventing incorporation of the multiple copies of C9 required for complete formation of the osmolytic pore. This inhibitor appears to be species-specific. Involved in signal transduction for T-cell activation complexed to a protein tyrosine kinase. The soluble form from urine retains its specific complement binding activity, but exhibits greatly reduced ability to inhibit MAC assembly on cell membranes. References
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