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Free monomeric RNA polymerase I at 4.0A resolution

Analyse Free monomeric RNA polymerase I at 4.0A resolution in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5M3M
Type
protein
Length
4,182 residues
Chains
14
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA-directed RNA polymerase I subunit RPA190; DNA-directed RNA polymerase I subunit…
EC
2.7.7.6
UniProt
P10964, P22138, P07703, P20434, P20435, P20436, P32529, P22139, P28000, P40422, Q01080, P47006, P50106, P46669
Ligands
ZN, SO4
Pockets
20 · best druggability 0.84

Structure

electron microscopy · 14 distinct chains · 32% helix, 23% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADNA-directed RNA polymerase I subunit RPA190 (EC 2.7.7.6)protein146244% helix, 13% strandP10964
BDNA-directed RNA polymerase I subunit RPA135 (EC 2.7.7.6)protein116630% helix, 25% strandP22138
CDNA-directed RNA polymerases I and III subunit RPAC1protein30530% helix, 33% strandP07703
EDNA-directed RNA polymerases I, II, and III subunit RPABC1protein21237% helix, 22% strandP20434
FDNA-directed RNA polymerases I, II, and III subunit RPABC2protein9846% helix, 11% strandP20435
HDNA-directed RNA polymerases I, II, and III subunit RPABC3protein1313% helix, 53% strandP20436
IDNA-directed RNA polymerase I subunit RPA12protein11610% helix, 27% strandP32529
JDNA-directed RNA polymerases I, II, and III subunit RPABC5protein6945% helix, 3% strandP22139
KDNA-directed RNA polymerases I and III subunit RPAC2protein10142% helix, 25% strandP28000
LDNA-directed RNA polymerases I, II, and III subunit RPABC4protein440% helix, 30% strandP40422
MDNA-directed RNA polymerase I subunit RPA49protein973% helix, 60% strandQ01080
NDNA-directed RNA polymerase I subunit RPA34protein1316% helix, 30% strandP47006
DDNA-directed RNA polymerase I subunit RPA14protein5850% helix, 10% strandP50106
GDNA-directed RNA polymerase I subunit RPA43protein1927% helix, 43% strandP46669

Ligands and binding sites

  • ZN · Zinc ion · metal · 7 copies · chains A, B, I, J, L
  • SO4 · Sulfate ion · ion · chains B

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
16830.840.8885empty
210850.830.84121empty
310240.830.84105empty
49430.820.8394empty
52320.820.9463empty

Interfaces

30 interfaces between chains.

  • A–B · 8461 Ų buried · 113 hydrogen bonds · protein-protein
  • M–N · 2478 Ų buried · 34 hydrogen bonds · protein-protein
  • A–E · 2454 Ų buried · 38 hydrogen bonds · protein-protein
  • A–I · 2315 Ų buried · 19 hydrogen bonds · protein-protein
  • C–K · 2033 Ų buried · 10 hydrogen bonds · protein-protein

Compared structures

  • 5M3M · Free monomeric RNA polymerase I at 4.0A resolution · the same entry in another collection · chain G against G, TM-score 1.00

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