Structure analysis

CryoEM structure of E.coli RNA polymerase paused elongation complex without RNA hairpin bound to NusA

Electron Microscopy
4.1Å resolution
Source organism: Escherichia coli K-12
Assembly composition:
hetero octamer (preferred)
Entry contents: 4 distinct polypeptide molecules
2 distinct DNA molecules
1 distinct RNA molecule

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero octamer
Accessible surface area: 160608.53 Å2
Buried surface area: 38016.9 Å2
Dissociation area: 1,307.5 Å2
Dissociation energy (ΔGdiss): 3.91 kcal/mol
Dissociation entropy (TΔSdiss): 12.52 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-119909

Macromolecules

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Chain: E
Length: 91 amino acids
Theoretical weight: 10.25 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0A800 (Residues: 1-91; Coverage: 100%)
Gene names: JW3624, b3649, rpoZ
Pfam: RNA polymerase Rpb6
InterPro:

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Name: DNA (30-MER)
Representative chains: N
Length: 31 nucleotides
Theoretical weight: 9.68 KDa

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Name: DNA (39-MER)
Representative chains: T
Length: 39 nucleotides
Theoretical weight: 11.82 KDa

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Name: RNA (5'-R(P*GP*AP*UP*GP*UP*GP*UP*GP*CP*U)-3')
Representative chains: R
Length: 10 nucleotides
Theoretical weight: 3.19 KDa

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