Controls the classical pathway of complement activation. It binds as a cofactor to C3b/C4b inactivator (C3bINA), which then hydrolyzes the complement fragment C4b. It also accelerates the degradation of the C4bC2a complex (C3 convertase) by dissociating the complement fragment C2a. Alpha chain binds C4b. It interacts also with anticoagulant protein S and with serum amyloid P component.

C4b-binding protein alpha chain; C4bp; C4bpa; C4BPA_HUMAN; Complement component 4 binding protein alpha; Complement component 4 binding protein; Proline-rich protein; PrP; RP11-164O23.4;

P04003

67kDa

Mouse monoclonal

Human

WB 1:500-1:2000

Store at -20 °C. Stable for 12 months from date of receipt.