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 | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 A 127 |
| Chain | Residue |
| A | HIS100 |
| A | ARG102 |
| A | SER111 |
| A | ARG113 |
| A | HOH147 |
| site_id | AC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 A 128 |
| Chain | Residue |
| A | HOH155 |
| A | ASN104 |
| A | GLY105 |
| site_id | AC4 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 A 129 |
| Chain | Residue |
| A | HIS122 |
| A | ALA123 |
| site_id | AC5 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 B 126 |
| Chain | Residue |
| B | HIS122 |
| B | HOH146 |
| B | HOH186 |
| site_id | AC6 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 B 127 |
| Chain | Residue |
| B | HIS100 |
| B | ARG102 |
| B | SER111 |
| B | ARG113 |
| B | HOH143 |
| site_id | AC7 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 B 128 |
| Chain | Residue |
| B | THR3 |
| B | GLU5 |
| B | HOH226 |
| C | MET1 |
| site_id | AC8 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 B 129 |
| site_id | AC9 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE SO4 B 130 |
| Chain | Residue |
| B | GLN12 |
| B | LEU67 |
| B | GLN69 |
| B | GLU70 |
| B | VAL71 |
| B | HIS122 |
| B | GLY124 |
| B | HOH197 |
| site_id | BC1 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 B 131 |
| Chain | Residue |
| B | ASN104 |
| B | GLY105 |
| site_id | BC2 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO4 B 132 |
| Chain | Residue |
| B | ARG91 |
| B | ALA123 |
| B | HOH206 |
| B | HOH216 |
| D | ARG91 |
| D | THR93 |
| site_id | BC3 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE GOL B 133 |
| Chain | Residue |
| B | GLU38 |
| B | TYR55 |
| B | SER58 |
| B | PHE82 |
| B | VAL84 |
| B | GOL134 |
| B | HOH153 |
| B | HOH160 |
| D | GLN89 |
| site_id | BC4 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE GOL B 134 |
| Chain | Residue |
| B | GLU38 |
| B | PHE86 |
| B | PRO97 |
| B | PHE116 |
| B | GOL133 |
| B | HOH153 |
| B | HOH198 |
| B | HOH230 |
| D | GLN89 |
| site_id | BC5 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 C 126 |
| Chain | Residue |
| C | HIS6 |
| C | ARG13 |
| C | HOH205 |
| site_id | BC6 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 C 127 |
| Chain | Residue |
| C | ILE121 |
| C | HIS122 |
| C | ALA123 |
| site_id | BC7 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO4 C 128 |
| Chain | Residue |
| C | ALA31 |
| C | ASP32 |
| C | ASN104 |
| C | LYS108 |
| C | HOH183 |
| C | HOH186 |
| site_id | BC8 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 C 129 |
| site_id | BC9 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE GOL C 130 |
| Chain | Residue |
| A | LEU18 |
| A | GLU38 |
| A | TYR55 |
| A | SER58 |
| A | LEU63 |
| A | HOH190 |
| C | GLN89 |
| site_id | CC1 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE GOL C 131 |
| Chain | Residue |
| A | GLN89 |
| A | HOH215 |
| C | GLU38 |
| C | PHE86 |
| C | PRO97 |
| C | HOH163 |
| site_id | CC2 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 D 126 |
| Chain | Residue |
| D | HIS122 |
| D | ALA123 |
| D | HOH158 |
| site_id | CC3 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 D 127 |
| Chain | Residue |
| C | HOH187 |
| D | HIS6 |
| D | ARG13 |
| D | HOH227 |
| site_id | CC4 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 D 128 |
| Chain | Residue |
| C | LYS119 |
| D | GLN12 |
| D | GLU70 |
| D | VAL71 |
| D | HOH186 |
| site_id | CC5 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 D 129 |
| Chain | Residue |
| D | HIS100 |
| D | ARG102 |
| D | SER111 |
| D | ARG113 |
| D | HOH143 |
| site_id | CC6 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 D 130 |
| site_id | CC7 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE SO4 D 131 |
| Chain | Residue |
| D | ASN104 |
| D | GLY105 |
| D | HOH145 |
| site_id | CC8 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE GOL D 132 |
| Chain | Residue |
| D | TYR14 |
| D | GLU38 |
| D | SER58 |
| D | PHE82 |
| D | VAL84 |
| D | ASN99 |
| D | HOH196 |
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 | GLU38 | |
| B | GLU38 | |
| C | GLU38 | |
| D | GLU38 | |
| site_id | SWS_FT_FI3 |
| Number of Residues | 4 |
| Details | BINDING: |
| Chain | Residue | Details |
| A | ASN99 | |
| B | ASN99 | |
| C | ASN99 | |
| D | ASN99 | |
