Multiple Assemblies exist for SMTL entry 5x1b
CO bound cytochrome c oxidase at 20 nsec after pump laser irradiation to release CO from O2 reduction center; X-RAY DIFFRACTION 2.40 Å

SMTL ID 5x1b.1 Ligands HEME-A; COPPER (II) ION; MAGNESIUM ION; SODIUM ION; CARBON MONOXIDE; TRISTEAROYLGLYCEROL; (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE; 1,2-ETHANEDIOL; DINUCLEAR COPPER ION; CHOLIC ACID; (7R,17E,20E)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSA-17,20-DIEN-1-AMINIUM 4-OXIDE; UNKNOWN ATOM OR ION; CARDIOLIPIN; (1S)-2-{[(2-AMINOETHOXY)(HYDROXY)PHOSPHORYL]OXY}-1-[(STEAROYLOXY)METHYL]ETHYL (5E,8E,11E,14E)-ICOSA-5,8,11,14-TETRAENOATE; ZINC ION; DECYL-BETA-D-MALTOPYRANOSIDE Polypeptides Cytochrome c oxidase subunit 1; Cytochrome c oxidase subunit 2; Cytochrome c oxidase subunit 3; Cytochrome c oxidase subunit 4 isoform 1, mitochondrial; Cytochrome c oxidase subunit 5A, mitochondrial; Cytochrome c oxidase subunit 5B, mitochondrial; Cytochrome c oxidase subunit 6A2, mitochondrial; Cytochrome c oxidase subunit 6B1; Cytochrome c oxidase subunit 6C; Cytochrome c oxidase subunit 7A1, mitochondrial; Cytochrome c oxidase subunit 7B, mitochondrial; Cytochrome c oxidase subunit 7C, mitochondrial; Cytochrome c oxidase subunit 8B, mitochondrial Oligo-state hetero-1-1-1-1-1-1-1-1-1-1-1-1-1-mer

SMTL ID 5x1b.2 Ligands HEME-A; COPPER (II) ION; MAGNESIUM ION; SODIUM ION; CARBON MONOXIDE; (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE; TRISTEAROYLGLYCEROL; 1,2-ETHANEDIOL; DINUCLEAR COPPER ION; CHOLIC ACID; UNKNOWN ATOM OR ION; (1S)-2-{[(2-AMINOETHOXY)(HYDROXY)PHOSPHORYL]OXY}-1-[(STEAROYLOXY)METHYL]ETHYL (5E,8E,11E,14E)-ICOSA-5,8,11,14-TETRAENOATE; CARDIOLIPIN; (7R,17E,20E)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSA-17,20-DIEN-1-AMINIUM 4-OXIDE; ZINC ION; DECYL-BETA-D-MALTOPYRANOSIDE Polypeptides Cytochrome c oxidase subunit 1; Cytochrome c oxidase subunit 2; Cytochrome c oxidase subunit 3; Cytochrome c oxidase subunit 4 isoform 1, mitochondrial; Cytochrome c oxidase subunit 5A, mitochondrial; Cytochrome c oxidase subunit 5B, mitochondrial; Cytochrome c oxidase subunit 6A2, mitochondrial; Cytochrome c oxidase subunit 6B1; Cytochrome c oxidase subunit 6C; Cytochrome c oxidase subunit 7A1, mitochondrial; Cytochrome c oxidase subunit 7B, mitochondrial; Cytochrome c oxidase subunit 7C, mitochondrial; Cytochrome c oxidase subunit 8B, mitochondrial Oligo-state hetero-1-1-1-1-1-1-1-1-1-1-1-1-1-mer