6jbq

Electron Microscopy
4.02Å resolution

CryoEM structure of Escherichia coli sigmaE transcription initiation complex containing 5nt of RNA

Released:
Source organism: Escherichia coli K-12
Primary publication:
Structures and mechanism of transcription initiation by bacterial ECF factors.
Nucleic Acids Res 47 7094-7104 (2019)
PMID: 31131408
Related structures: EMD-9792

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero nonamer (preferred)
PDBe Complex ID:
PDB-CPX-120061 (preferred)
Entry contents:
5 distinct polypeptide molecules
2 distinct DNA molecules
1 distinct RNA molecule
Macromolecules (8 distinct):
DNA-directed RNA polymerase subunit alpha Chains: A, B
Molecule details ›
Chains: A, B
Length: 329 amino acids
Theoretical weight: 36.56 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A7Z4 (Residues: 1-329; Coverage: 100%)
Gene names: JW3257, b3295, pez, phs, rpoA, sez
Sequence domains:
DNA-directed RNA polymerase subunit beta Chain: C
Molecule details ›
Chain: C
Length: 1342 amino acids
Theoretical weight: 150.82 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A8V2 (Residues: 1-1342; Coverage: 100%)
Gene names: JW3950, b3987, groN, nitB, rif, ron, rpoB, stl, stv, tabD
Sequence domains:
DNA-directed RNA polymerase subunit beta' Chain: D
Molecule details ›
Chain: D
Length: 1416 amino acids
Theoretical weight: 156.54 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A8T7 (Residues: 1-1407; Coverage: 100%)
Gene names: JW3951, b3988, rpoC, tabB
Sequence domains:
DNA-directed RNA polymerase subunit omega Chain: E
Molecule details ›
Chain: E
Length: 91 amino acids
Theoretical weight: 10.25 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A800 (Residues: 1-91; Coverage: 100%)
Gene names: JW3624, b3649, rpoZ
Sequence domains: RNA polymerase Rpb6
ECF RNA polymerase sigma-E factor Chain: F
Molecule details ›
Chain: F
Length: 219 amino acids
Theoretical weight: 25.11 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P0AGB6 (Residues: 1-191; Coverage: 100%)
Gene names: JW2557, b2573, rpoE, sigE
Sequence domains:
DNA (48-MER) Chain: G
Molecule details ›
Chain: G
Length: 48 nucleotides
Theoretical weight: 14.82 KDa
DNA (48-MER) Chain: H
Molecule details ›
Chain: H
Length: 48 nucleotides
Theoretical weight: 14.8 KDa
RNA (5'-R(*CP*UP*CP*GP*A)-3') Chain: I
Molecule details ›
Chain: I
Length: 5 nucleotides
Theoretical weight: 1.55 KDa

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 4.02Å
Relevant EMDB volumes: EMD-9792
Expression system: Escherichia coli