5iyb

Electron Microscopy
3.9Å resolution

Human core-PIC in the open state

Released:
Source organism: Homo sapiens
Related structures: EMD-8136

Function and Biology Details

Reactions catalysed:
RNA(n) + a ribonucleoside 5'-triphosphate = RNA(n+1) + diphosphate.
L-lysyl-[protein] + acetyl-CoA = N(6)-acetyl-L-lysyl-[protein] + CoA +H(+).
ATP + H2O = ADP + phosphate + H(+).
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
hetero 23-mer (preferred)
PDBe Complex ID:
PDB-CPX-118820 (preferred)
Entry contents:
21 distinct polypeptide molecules
2 distinct DNA molecules
Macromolecules (23 distinct):
DNA-directed RNA polymerase II subunit RPB1 Chain: A
DNA-directed RNA polymerase II subunit RPB2 Chain: B
Molecule details ›
Chain: B
Length: 1174 amino acids
Theoretical weight: 134.07 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P30876 (Residues: 1-1174; Coverage: 100%)
Gene name: POLR2B
Sequence domains:
DNA-directed RNA polymerase II subunit RPB3 Chain: C
DNA-directed RNA polymerase II subunit RPB4 Chain: D
DNA-directed RNA polymerases I, II, and III subunit RPABC1 Chain: E
DNA-directed RNA polymerases I, II, and III subunit RPABC2 Chain: F
DNA-directed RNA polymerase II subunit RPB7 Chain: G
DNA-directed RNA polymerases I, II, and III subunit RPABC3 Chain: H
DNA-directed RNA polymerase II subunit RPB9 Chain: I
DNA-directed RNA polymerases I, II, and III subunit RPABC5 Chain: J
DNA-directed RNA polymerase II subunit RPB11-a Chain: K
DNA-directed RNA polymerases I, II, and III subunit RPABC4 Chain: L
Transcription initiation factor IIB Chain: M
Transcription initiation factor IIA subunit 1 Chain: N
Transcription initiation factor IIA subunit 2 Chain: O
TATA-box-binding protein Chain: P
General transcription factor IIE subunit 1 Chain: Q
Transcription initiation factor IIE subunit beta Chain: R
General transcription factor IIF subunit 1 Chain: S
General transcription factor IIF subunit 2 Chain: T
Transcription elongation factor A protein 1 Chain: U
SCP-X Chain: X
SCP-Y Chain: Y

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

wwPDB Validation report is not available for this EM entry.
Resolution: 3.9Å
Relevant EMDB volumes: EMD-8136
Expression system: Escherichia coli