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 |
| B | 0004769 | molecular_function | steroid delta-isomerase activity |
| B | 0008202 | biological_process | steroid metabolic process |
| B | 0016853 | molecular_function | isomerase activity |
| C | 0004769 | molecular_function | steroid delta-isomerase activity |
| C | 0008202 | biological_process | steroid metabolic process |
| C | 0016853 | molecular_function | isomerase activity |
| D | 0004769 | molecular_function | steroid delta-isomerase activity |
| D | 0008202 | biological_process | steroid metabolic process |
| D | 0016853 | molecular_function | isomerase activity |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 A 126 |
| site_id | AC2 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE EQU A 127 |
| Chain | Residue |
| A | PHE116 |
| D | TYR88 |
| D | GLN89 |
| D | ARG91 |
| D | HOH134 |
| A | TYR14 |
| A | HIS38 |
| A | VAL84 |
| A | PHE86 |
| A | VAL95 |
| A | PRO97 |
| A | ASN99 |
| site_id | AC3 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE GOL A 128 |
| Chain | Residue |
| A | GLN89 |
| D | TYR14 |
| D | PHE54 |
| D | SER58 |
| D | VAL84 |
| D | MET112 |
| D | HOH150 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 B 126 |
| Chain | Residue |
| A | HOH413 |
| B | HIS6 |
| B | ARG13 |
| B | HOH371 |
| site_id | AC5 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 B 127 |
| Chain | Residue |
| B | ASN104 |
| B | GLY105 |
| B | HOH156 |
| site_id | AC6 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 B 128 |
| Chain | Residue |
| B | ARG102 |
| B | SER111 |
| B | HOH416 |
| site_id | AC7 |
| Number of Residues | 11 |
| Details | BINDING SITE FOR RESIDUE EQU B 129 |
| Chain | Residue |
| B | GLN89 |
| B | HOH277 |
| C | TYR14 |
| C | LEU18 |
| C | HIS38 |
| C | PHE54 |
| C | VAL84 |
| C | PHE86 |
| C | ASN99 |
| C | MET112 |
| C | PHE116 |
| site_id | AC8 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE GOL B 130 |
| Chain | Residue |
| B | ASN2 |
| B | PRO4 |
| B | ALA73 |
| B | VAL74 |
| B | ALA75 |
| B | HOH396 |
| D | HOH417 |
| site_id | AC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 C 126 |
| Chain | Residue |
| C | ARG45 |
| C | GLU53 |
| C | PHE54 |
| C | ASN57 |
| site_id | BC1 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO4 C 127 |
| Chain | Residue |
| B | ARG91 |
| B | HOH400 |
| C | ARG91 |
| C | THR93 |
| C | ALA123 |
| C | HOH143 |
| site_id | BC2 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 C 128 |
| Chain | Residue |
| C | HIS122 |
| C | ALA123 |
| site_id | BC3 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 C 129 |
| Chain | Residue |
| A | HIS100 |
| C | HIS100 |
| C | ARG102 |
| C | ARG113 |
| site_id | BC4 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 C 130 |
| site_id | BC5 |
| Number of Residues | 11 |
| Details | BINDING SITE FOR RESIDUE EQU C 131 |
| Chain | Residue |
| B | TYR14 |
| B | HIS38 |
| B | PHE54 |
| B | PHE86 |
| B | VAL95 |
| B | ASN99 |
| B | PHE116 |
| C | TYR88 |
| C | GLN89 |
| C | ARG91 |
| C | HOH399 |
| site_id | BC6 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE GOL C 132 |
| Chain | Residue |
| C | ASP24 |
| C | VAL27 |
| C | ALA28 |
| C | ARG52 |
| D | GLU43 |
| site_id | BC7 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 D 126 |
| Chain | Residue |
| D | HIS6 |
| D | ARG13 |
| D | SO4131 |
| D | GOL132 |
| D | HOH162 |
| site_id | BC8 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 D 127 |
| Chain | Residue |
| D | ASN104 |
| D | GLY105 |
| D | HOH159 |
| site_id | BC9 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 D 128 |
| Chain | Residue |
| D | HIS122 |
| D | ALA123 |
| site_id | CC1 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 D 129 |
| Chain | Residue |
| B | ARG113 |
| D | HIS100 |
| D | ARG102 |
| D | ARG113 |
| site_id | CC2 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 D 130 |
| site_id | CC3 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO4 D 131 |
| Chain | Residue |
| D | ALA9 |
| D | ARG13 |
| D | ASN19 |
| D | SO4126 |
| D | HOH164 |
| D | HOH290 |
| site_id | CC4 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE GOL D 132 |
| Chain | Residue |
| D | ALA9 |
| D | ASN19 |
| D | LEU63 |
| D | ALA64 |
| D | VAL65 |
| D | SO4126 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 4 |
| Details | ACT_SITE: Proton donor |
| Chain | Residue | Details |
| A | TYR14 | |
| B | TYR14 | |
| C | TYR14 | |
| D | TYR14 | |
| Chain | Residue | Details |
| A | HIS38 | |
| B | HIS38 | |
| C | HIS38 | |
| D | HIS38 | |
| site_id | SWS_FT_FI3 |
| Number of Residues | 4 |
| Details | BINDING: |
| Chain | Residue | Details |
| A | ASN99 | |
| B | ASN99 | |
| C | ASN99 | |
| D | ASN99 | |
