Role of the C3b-binding site on C4b-binding protein in regulating classical pathway C5 convertase
Keywords: C4BP, C4b-binding protein; C3b, C4b and C5b, the proteolytically activated form of C3, C4 and C5, respectively; Ec, chicken erythrocytes; VBS, veronal-buffered saline; GVB, VBS containing 0.1% gelatin; GVB++, GVB containing 0.5 mM MgCl2 and 0.15 mM CaCl2;