4BBR
Structure of RNA polymerase II-TFIIB complex
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 | polymer | 1733 | 191821.6 | 1 | UniProt (P04050) Pfam (PF04997) Pfam (PF05001) Pfam (PF00623) Pfam (PF04983) Pfam (PF05000) Pfam (PF04998) Pfam (PF04992) Pfam (PF04990) | SACCHAROMYCES CEREVISIAE | RPB1, RNA POLYMERASE II SUBUNIT 1, RNA POLYMERASE II SUBUNIT B1, DNA-DIRECTED RNA POLYMERASE III LARGEST SUBUNIT, RNA POLYMERASE II SUBUNIT B220 |
| 2 | B (B) | DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 | polymer | 1224 | 138937.3 | 1 | UniProt (P08518) Pfam (PF04563) Pfam (PF04561) Pfam (PF04565) Pfam (PF04566) Pfam (PF04567) Pfam (PF00562) Pfam (PF04560) | SACCHAROMYCES CEREVISIAE | RPB2, RNA POLYMERASE II SUBUNIT 2, B150, DNA-DIRECTED RNA POLYMERASE II 140 KDA POLYPEPTIDE |
| 3 | C (C) | DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 | polymer | 318 | 35330.5 | 1 | UniProt (P16370) Pfam (PF01193) Pfam (PF01000) | SACCHAROMYCES CEREVISIAE | RPB3, RNA POLYMERASE II SUBUNIT 3, RNA POLYMERASE II SUBUNIT B3, B44.5, DNA-DIRECTED RNA POLYMERASE II 45 KDA POLYPEPTIDE |
| 4 | D (D) | DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB4 | polymer | 221 | 25451.2 | 1 | UniProt (P20433) Pfam (PF03874) | SACCHAROMYCES CEREVISIAE | RPB4, RNA POLYMERASE II SUBUNIT B4, B32, DNA-DIRECTED RNA POLYMERASE II 32 KDA POLYPEPTIDE |
| 5 | E (E) | DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 | polymer | 215 | 25117.1 | 1 | UniProt (P20434) Pfam (PF03871) Pfam (PF01191) | SACCHAROMYCES CEREVISIAE | RPB5, RNA POLYMERASES I\,II\,AND III SUBUNIT ABC1, ABC27, DNA-DIRECTED RNA POLYMERASES I\,II\,AND III 27 KDA POLYPEPTIDE |
| 6 | F (F) | DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 | polymer | 155 | 17931.8 | 1 | UniProt (P20435) Pfam (PF01192) | SACCHAROMYCES CEREVISIAE | RPB6, RNA POLYMERASES I\,II\,AND III SUBUNIT ABC2, ABC23, DNA-DIRECTED RNA POLYMERASES I\,II\,AND III 23 KDA POLYPEPTIDE |
| 7 | G (G) | DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB7 | polymer | 171 | 19081.1 | 1 | UniProt (P34087) Pfam (PF03876) Pfam (PF00575) | SACCHAROMYCES CEREVISIAE | RPB7, RNA POLYMERASE II SUBUNIT B7, B16 |
| 8 | H (H) | DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 | polymer | 146 | 16525.4 | 1 | UniProt (P20436) Pfam (PF03870) | SACCHAROMYCES CEREVISIAE | RPB8, RNA POLYMERASES I\,II\,AND III SUBUNIT ABC3, ABC14.4, ABC14.5, DNA-DIRECTED RNA POLYMERASES I\,II\,AND III 14.5 KDA POLYPEPTIDE |
| 9 | I (I) | DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 | polymer | 122 | 14308.2 | 1 | UniProt (P27999) Pfam (PF02150) Pfam (PF01096) | SACCHAROMYCES CEREVISIAE | RPB9, RNA POLYMERASE II SUBUNIT B9, B12.6, DNA-DIRECTED RNA POLYMERASE II 14.2 KDA POLYPEPTIDE, DNA-DIRECTED RNA POLYMERASE II SUBUNIT 9 |
| 10 | J (J) | DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 | polymer | 70 | 8290.7 | 1 | UniProt (P22139) Pfam (PF01194) | SACCHAROMYCES CEREVISIAE | RPB10, RNA POLYMERASES I, II, AND III SUBUNIT ABC5, ABC10-BETA, ABC8, DNA-DIRECTED RNA POLYMERASES I, II, AND III 8.3 KDA POLYPEPTIDE |
| 11 | K (K) | DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 | polymer | 120 | 13633.5 | 1 | UniProt (P38902) Pfam (PF13656) | SACCHAROMYCES CEREVISIAE | RPB11, RNA POLYMERASE II SUBUNIT B11, B13.6, DNA-DIRECTED RNA POLYMERASE II 13.6 KDA POLYPEPTIDE |
| 12 | L (L) | DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 | polymer | 70 | 7730.0 | 1 | UniProt (P40422) Pfam (PF03604) | SACCHAROMYCES CEREVISIAE | RPB12, RNA POLYMERASES I, II, AND III SUBUNIT ABC4, ABC10-ALPHA |
| 13 | M (M) | TRANSCRIPTION INITIATION FACTOR IIB | polymer | 345 | 38257.3 | 1 | UniProt (P29055) Pfam (PF08271) Pfam (PF00382) | SACCHAROMYCES CEREVISIAE | TFIIB, GENERAL TRANSCRIPTION FACTOR TFIIB, TRANSCRIPTION FACTOR E |
| 14 | N, O, R, S, T... (A, B, C, I, J...) | ZINC ION | non-polymer | 65.4 | 9 | Chemie (ZN) | |||
| 15 | P, Q (A) | MAGNESIUM ION | non-polymer | 24.3 | 2 | Chemie (MG) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 13 |
| Total formula weight | 552415.6 | |
| Non-Polymers* | Number of molecules | 11 |
| Total formula weight | 637.3 | |
| All* | Total formula weight | 553052.9 |
