https://www.ncbi.nlm.nih.gov/Structure/pdb/8OMX
8OMX: NI,FE-CODH -600mV state : 1 min Dioxygen Exposure
Carbon monoxide dehydrogenase 2FE (II) IONFE(4)-NI(1)-S(5) CLUSTERFE2/S2 (INORGANIC) CLUSTERHYDROSULFURIC ACIDIRON/SULFUR CLUSTER
state 1nifecodh600mv