Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE CAC A 398 |
| Chain | Residue |
| A | ARG188 |
| A | GLU189 |
| A | SER190 |
| A | ALA196 |
| A | TYR197 |
| A | CYS198 |
| D | PTR3 |
| site_id | AC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE CAC A 351 |
| Chain | Residue |
| A | HOH490 |
| B | ASP221 |
| B | HOH515 |
| A | CYS251 |
| A | HOH438 |
| site_id | AC3 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE CAC B 399 |
| Chain | Residue |
| B | ARG188 |
| B | SER190 |
| B | TYR197 |
| B | CYS198 |
| C | PTR3 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE CAC B 352 |
| Chain | Residue |
| B | CYS251 |
| B | HOH462 |
| B | HOH485 |
| B | HOH508 |
