Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE CA B 554 |
| Chain | Residue |
| B | ASP252 |
| A | GLU150 |
| B | ASP73 |
| B | VAL75 |
| B | ASP76 |
| B | PRO205 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 B 555 |
| Chain | Residue |
| B | LYS98 |
| B | ARG270 |
| B | GLN288 |
| B | HOH775 |
| site_id | AC3 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE SO4 A 255 |
| Chain | Residue |
| A | PCA1 |
| A | SER2 |
| A | THR3 |
| A | GLN4 |
| A | ASN20 |
| A | HOH828 |
| A | HOH830 |
| site_id | AC4 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 A 269 |
| Chain | Residue |
| A | THR128 |
| A | PHE130 |
| B | GLU491 |
| B | SER494 |
| B | HOH981 |
| site_id | AC5 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 B 556 |
| Chain | Residue |
| B | GLN200 |
| B | ASN441 |
| B | ASN444 |
| B | HOH1038 |
| site_id | AS |
| Number of Residues | 4 |
| Details | SER B 1 IS THE CATALYTIC RESIDUE GLN B 23, ALA B 69 AND ASN B 241 FORM AN OXYANION HOLE |
| Chain | Residue |
| B | SER1 |
| B | GLN23 |
| B | ALA69 |
| B | ASN241 |
