Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004769 | molecular_function | steroid delta-isomerase activity |
| 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 A 201 |
| Chain | Residue |
| A | TYR16 |
| A | ASP40 |
| A | PHE86 |
| A | MET90 |
| A | ASN93 |
| A | LEU99 |
| A | ASP103 |
| A | MET116 |
| A | TRP120 |
| site_id | AC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE BME A 501 |
| Chain | Residue |
| A | PRO4 |
| A | THR5 |
| A | ALA6 |
| A | HIS78 |
| A | HOH2050 |
| site_id | AC3 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE BME A 601 |
| Chain | Residue |
| A | PHE42 |
| A | CYS81 |
| A | VAL104 |
| A | ARG106 |
| A | TYR119 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE BME A 701 |
| Chain | Residue |
| A | ALA68 |
| A | CYS69 |
| A | ARG87 |
| A | GLU89 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 1 |
| Details | ACT_SITE: Proton donor |
| Chain | Residue | Details |
| A | TYR16 | |
| site_id | SWS_FT_FI2 |
| Number of Residues | 1 |
| Details | ACT_SITE: Proton acceptor |
| Chain | Residue | Details |
| A | ASP40 | |
| Chain | Residue | Details |
| A | ASP103 | |
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 | ASP40 | |
| A | TYR32 | |
| A | TYR16 | |
| A | TYR57 | |
| site_id | CSA2 |
| Number of Residues | 3 |
| Details | Annotated By Reference To The Literature 1e3v |
| Chain | Residue | Details |
| A | ASP103 | |
| A | ASP40 | |
| A | TYR16 | |
| site_id | MCSA1 |
| Number of Residues | 4 |
| Details | M-CSA 349 |
| Chain | Residue | Details |
| A | TYR16 | proton acceptor, proton donor |
| A | ASP40 | proton acceptor, proton donor |
| A | ASP100 | electrostatic stabiliser |
| A | ASP103 | electrostatic stabiliser |
