Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0006355 | biological_process | regulation of DNA-templated transcription |
| B | 0006355 | biological_process | regulation of DNA-templated transcription |
| C | 0006355 | biological_process | regulation of DNA-templated transcription |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE SO4 C 553 |
| Chain | Residue |
| A | ARG416 |
| A | GLN442 |
| A | ARG445 |
| A | HOH656 |
| C | ARG416 |
| C | GLN442 |
| C | ARG445 |
| site_id | AC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 A 553 |
| Chain | Residue |
| A | HOH565 |
| A | HOH605 |
| A | HOH624 |
| A | ARG497 |
| A | ARG502 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 A 554 |
| Chain | Residue |
| A | LYS507 |
| A | PRO514 |
| A | ARG515 |
| A | HOH639 |
| site_id | AC4 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 B 553 |
| Chain | Residue |
| B | LYS507 |
| B | PRO514 |
| B | ARG515 |
| B | HOH613 |
| B | HOH665 |
| site_id | AC5 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE SO4 B 554 |
| Chain | Residue |
| B | ARG416 |
| B | ARG416 |
| B | GLN442 |
| B | GLN442 |
| B | ARG445 |
| B | ARG445 |
| B | GLN446 |
| B | GLN446 |
| site_id | AC6 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO4 B 555 |
| Chain | Residue |
| B | ARG497 |
| B | ARG502 |
| B | HOH558 |
| B | HOH571 |
| B | HOH647 |
| B | HOH657 |
| site_id | AC7 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 C 554 |
| Chain | Residue |
| C | ARG497 |
| C | ARG502 |
| C | SO4555 |
| C | HOH559 |
| C | HOH581 |
| site_id | AC8 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE SO4 C 555 |
| Chain | Residue |
| B | SER368 |
| B | ASN369 |
| B | ARG372 |
| C | ARG496 |
| C | ARG497 |
| C | ARG502 |
| C | SO4554 |
| C | HOH559 |
| site_id | AC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 C 556 |
| Chain | Residue |
| C | LYS507 |
| C | PRO514 |
| C | ARG515 |
| C | HOH623 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 3 |
| Details | SITE: Necessary for heterotrimerization |
| Chain | Residue | Details |
| A | ARG515 | |
| B | ARG515 | |
| C | ARG515 | |
| Chain | Residue | Details |
| A | LYS428 | |
| A | LYS507 | |
| B | LYS428 | |
| B | LYS507 | |
| C | LYS428 | |
| C | LYS507 | |
| site_id | SWS_FT_FI3 |
| Number of Residues | 6 |
| Details | CROSSLNK: Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) => ECO:0000269|PubMed:19135894 |
| Chain | Residue | Details |
| A | LYS519 | |
| B | LYS519 | |
| C | LYS519 | |
