Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Cytochrome bd-I ubiquinol oxidase subunit 1 | polymer | 522 | 58251.7 | 1 | UniProt (P0ABJ9) Pfam (PF01654) | Escherichia coli K-12 | Cytochrome bd-I oxidase subunit I,Cytochrome d ubiquinol oxidase subunit I |
| 2 | B (B) | Cytochrome bd-I ubiquinol oxidase subunit 2 | polymer | 379 | 42479.8 | 1 | UniProt (P0ABK2) Pfam (PF02322) | Escherichia coli K-12 | Cytochrome bd-I oxidase subunit II,Cytochrome d ubiquinol oxidase subunit II |
| 3 | C (H) | Cytochrome bd-I ubiquinol oxidase CydH (Uncharacterized protein YnhF) | polymer | 29 | 2999.7 | 1 | UniProt (A5A618) | Escherichia coli K-12 | |
| 4 | D (X) | Cytochrome bd-I ubiquinol oxidase subunit X | polymer | 37 | 4043.7 | 1 | UniProt (P56100) Pfam (PF08173) | Escherichia coli K-12 | Cytochrome bd-I oxidase subunit X,Cytochrome d ubiquinol oxidase subunit X |
| 5 | E (A) | TRANS-HEME D HYDROXYCHLORIN GAMMA-SPIROLACTONE | non-polymer | 636.5 | 1 | Chemie (A1JN4) | |||
| 6 | F, G (A) | PROTOPORPHYRIN IX CONTAINING FE | non-polymer | 616.5 | 2 | Chemie (HEM) | |||
| 7 | H, J (A, B) | 2-(HEXADECANOYLOXY)-1-[(PHOSPHONOOXY)METHYL]ETHYL HEXADECANOATE | non-polymer | 648.9 | 2 | Chemie (LPP) PubChem (3099) PubChem (446066) PubChem (11061290) | |||
| 8 | I (A) | OXYGEN MOLECULE | non-polymer | 32.0 | 1 | Chemie (OXY) PubChem (977) | |||
| 9 | K (B) | Ubiquinone-8 | non-polymer | 727.1 | 1 | Chemie (UQ8) PubChem (176478936) PubChem (5283546) PubChem (1157) | |||
| 10 | L, M (A, B) | water | water | 18.0 | 32 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 107774.9 | |
| Non-Polymers* | Number of molecules | 7 |
| Total formula weight | 3926.4 | |
| All* | Total formula weight | 111701.2 |






