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Teranry complex of human DNA polymerase IOTA(26-445) inserting dcmpnpp opposite template G in the presence of MN2+

Analyse Teranry complex of human DNA polymerase IOTA(26-445) inserting dcmpnpp opposite… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5KT3
Type
protein + DNA
Length
396 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA (5'-D(*CP*TP*GP*GP*GP*GP*TP*CP*CP*T)-3'); DNA (5'-D(P*AP*GP*GP*AP*CP*CP*C)-3'); DNA…
EC
2.7.7.7
UniProt
Q9UNA4
Ligands
0KX, MN
Pockets
3 · best druggability 0.80

Structure

x-ray diffraction · 3 distinct chains · 47% helix, 21% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
TDNA (5'-D(*CP*TP*GP*GP*GP*GP*TP*CP*CP*T)-3')dna10——
PDNA (5'-D(P*AP*GP*GP*AP*CP*CP*C)-3')dna7——
ADNA polymerase iota (EC 2.7.7.7)protein37947% helix, 21% strandQ9UNA4

Ligands and binding sites

  • 0KX · 2'-deoxy-5'-O-[(R)-hydroxy{[(r)-hydroxy(phosphonooxy) phosphoryl]amino}phosphoryl]cytidine · ligand · chains T, P, A
  • MN · Manganese (II) ion · metal · 3 copies · chains A, P

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

Pockets

3 pockets found on a 1 Å grid, 2 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19350.800.82810KX, MN
23590.690.8234empty
3800.340.7414empty

Interfaces

3 interfaces between chains.

  • T–A · 899 Ų buried · 17 hydrogen bonds · protein-nucleic
  • P–A · 511 Ų buried · 11 hydrogen bonds · protein-nucleic
  • T–P · 328 Ų buried · 23 hydrogen bonds · nucleic-nucleic

Compared structures

  • 5KT3 · Teranry complex of human DNA polymerase iota(26-445) inserting dCMPNPP opposite template… · the same entry in another collection · chain T against T, TM-score 1.00
  • Q9UNA4 · AlphaFold monomer V2.0 prediction for DNA polymerase iota (Q9UNA4) · a predicted model of the same protein · chain A against A, TM-score 0.99

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