The crystal structure of c2a, the catalytic fragment of classical pathway c3 and c5 convertase of human complement.
Krishnan, V., Xu, Y., Macon, K., Volanakis, J.E., Narayana, S.V.(2007) J.Mol.Biol. 367: 224-233
- PubMed: 17234210 
- DOI: 10.1016/j.jmb.2006.12.039
- Primary Citation of Related Structures:  
- PubMed Abstract: 
The multi-domain serine protease C2 provides the catalytic activity for the C3 and C5- convertases of the classical and lectin pathways of complement activation. Formation of these convertases requires the Mg(2+)-dependent binding of C2 to C4b, and t ...