1.3.7.15	?	x * 53000 + x * 56000 + x * 53000, SDS-PAGE	
1.3.7.15	additional information	In contrast to BciA and BciB, COR is a nitrogenase-like complex enzyme consisting of two separable components, the X protein (a BchX dimer) and the YZ protein (a BchY-BchZ heterotetramer). The X protein serves as the reductase component by transferring electrons from a [4Fe-4S] cluster held in the interface between the BchX homodimer to the YZ protein. The YZ protein is the catalytic component, as it accepts electrons from the X protein and transfers them to the Chlide substrate via a [4Fe-4S] cluster, to produce 3-vinyl bacteriochlorophyllide a (3 V-BChlide)	
1.3.7.15	additional information	one BchYZ heterodimer is assumed as a minimal active protomer	
1.3.7.15	oligomer	the COR components (BchY/BchZ)2 and BchX2 are organized in a ternary COR complex