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Cryoem structure of E.COLI RNA polymerase elongation complex bound with rfah

Analyse Cryoem structure of E.COLI RNA polymerase elongation complex bound with rfah in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6C6S
Type
protein + DNA + RNA
Length
3,428 residues
Chains
9
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA (29-mer); RNA (5'- R(*GP*CP*AP*UP*UP*CP*AP*AP*AP*GP*CP*CP*GP*AP*GP*AP*GP*GP*UP*A)-3')…
EC
2.7.7.6
UniProt
P0A7Z4, P0A8V2, P0A8T7, P0A800, P0AFW0
Ligands
ZN, MG
Pockets
20 · best druggability 0.82

Structure

electron microscopy · 9 distinct chains · 31% helix, 21% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADNA (29-mer)dna29——
BDNA (29-mer)dna29——
RRNA (5'- R(*GP*CP*AP*UP*UP*CP*AP*AP*AP*GP*CP*CP*GP*AP*GP*AP*GP*GP*UP*A)-3')rna10——
GDNA-directed RNA polymerase subunit alpha (EC 2.7.7.6)protein22122% helix, 36% strandP0A7Z4
HDNA-directed RNA polymerase subunit alpha (EC 2.7.7.6)protein21919% helix, 37% strandP0A7Z4
IDNA-directed RNA polymerase subunit beta (EC 2.7.7.6)protein134129% helix, 21% strandP0A8V2
JDNA-directed RNA polymerase subunit beta' (EC 2.7.7.6)protein133536% helix, 17% strandP0A8T7
KDNA-directed RNA polymerase subunit omega (EC 2.7.7.6)protein8363% helix, 0% strandP0A800
DTranscription antitermination protein rfahprotein16115% helix, 34% strandP0AFW0

Ligands and binding sites

  • ZN · Zinc ion · metal · 2 copies · chains J
  • MG · Magnesium ion · metal · chains R, J

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

20 pockets found on a 1 Å grid, 20 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
16880.820.8771empty
28370.820.8575empty
33870.800.9050empty
410400.800.8297empty
55720.800.8665empty

Interfaces

19 interfaces between chains.

  • I–J · 8478 Ų buried · 97 hydrogen bonds · protein-protein
  • G–I · 1915 Ų buried · 26 hydrogen bonds · protein-protein
  • G–H · 1857 Ų buried · 11 hydrogen bonds · protein-protein
  • J–K · 1284 Ų buried · 16 hydrogen bonds · protein-protein
  • J–D · 1062 Ų buried · 6 hydrogen bonds · protein-protein

Compared structures

  • 6C6S · CryoEM structure of E.coli RNA polymerase elongation complex bound with RfaH · the same entry in another collection · chain D against D, TM-score 1.00
  • P0A8V2 · AlphaFold monomer V2.0 prediction for DNA-directed RNA polymerase subunit beta (P0A8V2) · a predicted model of the same protein · chain I against A, TM-score 0.98
  • P0AFW0 · AlphaFold monomer V2.0 prediction for transcription antitermination protein rfah (P0AFW0) · a predicted model of the same protein · chain D against A, TM-score 0.56

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