Entity
| Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| A | Rhodopsin I | polymer | 244 | 26476.3 | 1 | Acetabularia acetabulum (Mermaid's wine glass) | ||
| RETINAL | non-polymer | 284.4 | 1 | |||||
| (2S)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate | non-polymer | 356.5 | 1 | |||||
| DODECANE | non-polymer | 170.3 | 2 | |||||
| DECANE | non-polymer | 142.3 | 3 | |||||
| N-OCTANE | non-polymer | 114.2 | 2 | |||||
| TETRADECANE | non-polymer | 198.4 | 1 | |||||
| water | water | 18.0 | 92 |
