Structure analysis

Cryo-EM structure of Escherichia coli RNA polymerase bound to lambda PR (-5G to C) promoter DNA

Electron Microscopy
3.5Å resolution
Source organism: Escherichia coli
Assembly composition:
hetero octamer (preferred)
Entry contents: 5 distinct polypeptide molecules
2 distinct DNA molecules

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero octamer
Accessible surface area: 170758.75 Å2
Buried surface area: 51621.17 Å2
Dissociation area: 2,879.48 Å2
Dissociation energy (ΔGdiss): 4.61 kcal/mol
Dissociation entropy (TΔSdiss): 16.14 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-121642

Macromolecules

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Chain: K
Length: 91 amino acids
Theoretical weight: 10.25 KDa
Source organism: Escherichia coli
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: Nontemplate strand of lambda PR DNA promoter (-5G to C)
Representative chains: P
Length: 90 nucleotides
Theoretical weight: 27.84 KDa

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Name: Template strand of lambda PR promoter DNA (-5C to G)
Representative chains: Q
Length: 90 nucleotides
Theoretical weight: 27.67 KDa

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