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Escherichia COLI RNA polymerase core enzyme

Analyse Escherichia COLI RNA polymerase core enzyme in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7MKP
Type
protein
Length
3,193 residues
Chains
5
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA-directed RNA polymerase subunit alpha; DNA-directed RNA polymerase subunit beta…
EC
2.7.7.6
UniProt
A0A4S5AL01, A0A4S4NK82, A0A6D2WUT6, P0A800
Ligands
ZN, MG
Pockets
20 · best druggability 0.82

Structure

electron microscopy · 5 distinct chains · 33% helix, 21% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADNA-directed RNA polymerase subunit alpha (EC 2.7.7.6)protein23124% helix, 39% strandA0A4S5AL01
BDNA-directed RNA polymerase subunit alpha (EC 2.7.7.6)protein23021% helix, 40% strandA0A4S5AL01
CDNA-directed RNA polymerase subunit beta (EC 2.7.7.6)protein132332% helix, 22% strandA0A4S4NK82
DDNA-directed RNA polymerase subunit beta' (EC 2.7.7.6)protein134037% helix, 15% strandA0A6D2WUT6
EDNA-directed RNA polymerase subunit omega (EC 2.7.7.6)protein6957% helix, 0% strandP0A800

Ligands and binding sites

  • ZN · Zinc ion · metal · 2 copies · chains D
  • MG · Magnesium ion · metal · chains D

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
16570.820.8767empty
21470.800.9625empty
39260.800.8283empty
43480.770.8853empty
58030.750.7980empty

Interfaces

7 interfaces between chains.

  • C–D · 7339 Ų buried · 58 hydrogen bonds · protein-protein
  • A–B · 1997 Ų buried · 15 hydrogen bonds · protein-protein
  • A–C · 1594 Ų buried · 17 hydrogen bonds · protein-protein
  • D–E · 1379 Ų buried · 12 hydrogen bonds · protein-protein
  • B–D · 1012 Ų buried · 7 hydrogen bonds · protein-protein

Compared structures

  • 7MKP · Escherichia coli RNA polymerase core enzyme · the same entry in another collection · chain A against A, TM-score 1.00

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