Functional Information from GO Data
| Chain | GOid | namespace | contents | 
| A | 0004769 | molecular_function | steroid Delta-isomerase activity | 
| A | 0006629 | biological_process | lipid metabolic process | 
| A | 0008202 | biological_process | steroid metabolic process | 
| A | 0016853 | molecular_function | isomerase activity | 
Functional Information from PDB Data
| site_id | AC1 | 
| Number of Residues | 9 | 
| Details | BINDING SITE FOR RESIDUE EQU A1128 | 
| Chain | Residue | 
| A | VAL20 | 
| A | ASN40 | 
| A | PHE56 | 
| A | TYR57 | 
| A | PHE86 | 
| A | MET90 | 
| A | TRP92 | 
| A | ASN93 | 
| A | ASP103 | 
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 | 
| Number of Residues | 1 | 
| Details | Active site: {"description":"Proton donor"} | 
| site_id | SWS_FT_FI2 | 
| Number of Residues | 1 | 
| Details | Active site: {"description":"Proton acceptor"} | 
| site_id | SWS_FT_FI3 | 
| Number of Residues | 1 | 
| Details | Binding site: {"evidences":[{"source":"PubMed","id":"11007792","evidenceCode":"ECO:0000269"}]} | 
Catalytic Information from CSA
| site_id | CSA1 | 
| Number of Residues | 5 | 
| Details | Annotated By Reference To The Literature 1e3v | 
| Chain | Residue | Details | 
| A | ASP103 |  | 
| A | ASN40 |  | 
| A | TYR32 |  | 
| A | PHE16 |  | 
| A | TYR57 |  | 
| site_id | MCSA1 | 
| Number of Residues | 4 | 
| Details | M-CSA 349 | 
| Chain | Residue | Details | 
| A | PHE16 | proton acceptor, proton donor | 
| A | ASN40 | proton acceptor, proton donor | 
| A | ASP100 | electrostatic stabiliser | 
| A | ASP103 | electrostatic stabiliser |