Substrate recognition by complement convertases revealed in the C5-cobra venom factor complex.
Laursen, N.S., Andersen, K.R., Braren, I., Spillner, E., Sottrup-Jensen, L., Andersen, G.R.(2011) EMBO J 30: 606-616
- PubMed: 21217642 
- DOI: 10.1038/emboj.2010.341
- Primary Citation of Related Structures:  
3PRX, 3PVM - PubMed Abstract: 
Complement acts as a danger-sensing system in the innate immune system, and its activation initiates a strong inflammatory response and cleavage of the proteins C3 and C5 by proteolytic enzymes, the convertases. These contain a non-catalytic substrate contacting subunit (C3b or C4b) in complex with a protease subunit (Bb or C2a) ...