The covalent binding reaction of C3 and C4.
D000818:Animals; D002460:Cell Line; D002462:Cell Membrane / Q000378:metabolism; D003176:Complement C3 / Q000378:metabolism*; D003179:Complement C3b / Q000378:metabolism; D003181:Complement C4 / Q000378:metabolism*; D004789:Enzyme Activation; D005990:Glycerol / Q000378:metabolism; D006801:Humans; D007700:Kinetics; D008565:Membrane Proteins / Q000378:metabolism; D011485:Protein Binding
D003176:Complement C3; D003181:Complement C4; D008565:Membrane Proteins; D003179:Complement C3b; D005990:Glycerol