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 | 6 |
| Details | binding site for residue MG A 201 |
| Chain | Residue |
| A | HOH323 |
| A | HOH339 |
| A | HOH344 |
| A | HOH392 |
| A | HOH435 |
| A | HOH453 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 202 |
| Chain | Residue |
| A | HOH308 |
| A | HOH363 |
| A | HOH387 |
| A | GLU18 |
| A | ASP21 |
| A | HOH303 |
| site_id | AC3 |
| Number of Residues | 6 |
| Details | binding site for residue CL A 203 |
| Chain | Residue |
| A | THR71 |
| A | GLY72 |
| A | ARG75 |
| A | HOH362 |
| A | HOH428 |
| A | HOH428 |
| site_id | AC4 |
| Number of Residues | 11 |
| Details | binding site for residue DNX A 204 |
| Chain | Residue |
| A | TYR16 |
| A | ASN40 |
| A | PHE56 |
| A | PHE57 |
| A | LEU61 |
| A | PHE86 |
| A | ASP103 |
| A | MET116 |
| A | HOH310 |
| A | HOH400 |
| A | HOH425 |
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 | ASN40 | |
| Chain | Residue | Details |
| A | ASP103 | |
Catalytic Information from CSA
| site_id | MCSA1 |
| Number of Residues | 4 |
| Details | M-CSA 349 |
| Chain | Residue | Details |
| A | TYR16 | proton acceptor, proton donor |
| A | ASN40 | proton acceptor, proton donor |
| A | ASP100 | electrostatic stabiliser |
| A | ASP103 | electrostatic stabiliser |
