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MolNFT v1 · #23571 · protein + DNA

8OXOGUANINE at the pre-insertion site of the polymerase active site

1U45 · DNA primer strand: “8OXOGUANINE at the pre-insertion site of the polymerase active site”. X-ray diffraction, 4 ligands (GLC, FRU, MG), 7 pockets (best druggability 0.69). MolNFT v1 #23571 on GenesisL1: 3D structure, binding sites…

PDB
1U45
Type
protein + DNA
Length
600 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA primer strand; DNA template strand with 8-oxoguanine; DNA polymerase I
EC
2.7.7.7
UniProt
P52026
Ligands
GLC, FRU, MG, SO4
Pockets
7 · best druggability 0.69

Structure

x-ray diffraction · 3 distinct chains · 56% helix, 13% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
BDNA primer stranddna9——
CDNA template strand with 8-oxoguaninedna11——
ADNA polymerase I (EC 2.7.7.7)protein58056% helix, 13% strandP52026

Ligands and binding sites

  • GLC · alpha-D-glucopyranose · sugar · chains A
  • FRU · beta-D-fructofuranose · sugar · chains A
  • MG · Magnesium ion · metal · chains A
  • SO4 · Sulfate ion · ion · 3 copies · chains A

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

Pockets

7 pockets found on a 1 Å grid, 3 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
13920.690.8143GLC, FRU
21940.670.8631empty
37010.670.7666SO4, MG
41100.430.7726empty
51080.380.7417empty

Interfaces

3 interfaces between chains.

  • C–A · 1238 Ų buried · 26 hydrogen bonds · protein-nucleic
  • B–A · 807 Ų buried · 22 hydrogen bonds · protein-nucleic
  • B–C · 436 Ų buried · 37 hydrogen bonds · nucleic-nucleic

Modifications

Observed in the structure: 1 modified (nucleotide modification).

Compared structures

  • 1U45 · 8oxoguanine at the pre-insertion site of the polymerase active site · the same entry in another collection · chain B against B, TM-score 1.00
  • P52026 · AlphaFold monomer V2.0 prediction for DNA polymerase I (P52026) · a predicted model of the same protein · chain A against A, TM-score 0.99

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