Functional Information from GO Data
| Chain | GOid | namespace | contents | 
| A | 0006355 | biological_process | regulation of DNA-templated transcription | 
| A | 0007602 | biological_process | phototransduction | 
| A | 0009881 | molecular_function | photoreceptor activity | 
| A | 0042802 | molecular_function | identical protein binding | 
Functional Information from PDB Data
| site_id | AC1 | 
| Number of Residues | 8 | 
| Details | BINDING SITE FOR RESIDUE HC4 A 169 | 
| Chain | Residue | 
| A | TYR42 | 
| A | GLU46 | 
| A | VAL50 | 
| A | ALA67 | 
| A | PRO68 | 
| A | CYS69 | 
| A | PHE96 | 
| A | TYR98 | 
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 | 
| Number of Residues | 63 | 
| Details | Domain: {"description":"PAS","evidences":[{"source":"PROSITE-ProRule","id":"PRU00140","evidenceCode":"ECO:0000255"}]} | 
| site_id | SWS_FT_FI2 | 
| Number of Residues | 1 | 
| Details | Modified residue: {"description":"S-(4-hydroxycinnamyl)cysteine","evidences":[{"source":"PubMed","id":"7981196","evidenceCode":"ECO:0000269"}]} |