Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE SO4 A 201 |
| Chain | Residue |
| A | SER19 |
| A | HIS21 |
| A | SER22 |
| A | HOH306 |
| A | HOH312 |
| A | HOH322 |
| A | HOH334 |
| C | SER1628 |
| C | HOH1803 |
| site_id | AC2 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE SO4 A 202 |
| Chain | Residue |
| A | SER3 |
| A | PHE4 |
| A | HIS33 |
| A | LYS35 |
| A | HIS36 |
| A | HOH301 |
| A | HOH309 |
| site_id | AC3 |
| Number of Residues | 10 |
| Details | BINDING SITE FOR RESIDUE SO4 B 201 |
| Chain | Residue |
| B | SER19 |
| B | HIS21 |
| B | SER22 |
| B | HOH303 |
| B | HOH304 |
| B | HOH311 |
| B | HOH326 |
| D | SER1628 |
| D | TYR1629 |
| D | HOH1808 |
Functional Information from PROSITE/UniProt
| site_id | PS00115 |
| Number of Residues | 7 |
| Details | RNA_POL_II_REPEAT Eukaryotic RNA polymerase II heptapeptide repeat. YSPTSPS |
| Chain | Residue | Details |
| C | TYR1615-SER1621 | |
| C | TYR1622-SER1628 | |
Functional Information from SwissProt/UniProt
| Chain | Residue | Details |
| A | SER2 | |
| B | SER2 | |
| Chain | Residue | Details |
| A | SER132 | |
| B | SER132 | |
| Chain | Residue | Details |
| A | SER134 | |
| B | SER134 | |
