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Structure of the core tfiih-xpa-DNA complex

Analyse Structure of the core tfiih-xpa-DNA complex in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6RO4
Type
protein + DNA
Length
2,396 residues
Chains
9
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA1; DNA2; General transcription and DNA repair factor iih helicase subunit xpb; General…
EC
3.6.4.12
UniProt
P19447, Q6ZYL4, P18074, Q13889, Q13888, Q92759, P23025
Ligands
SF4, ZN
Pockets
20 · best druggability 0.83

Structure

electron microscopy · 9 distinct chains · 38% helix, 13% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
JDNA1dna19——
KDNA2dna28——
AGeneral transcription and DNA repair factor iih helicase subunit xpb (EC 3.6.4.12)protein57529% helix, 15% strandP19447
FGeneral transcription factor iih subunit 5protein6239% helix, 21% strandQ6ZYL4
BTfiih basal transcription factor complex helicase xpd subunit (EC 3.6.4.12)protein67542% helix, 12% strandP18074
EGeneral transcription factor iih subunit 3protein23738% helix, 18% strandQ13889
DGeneral transcription factor iih subunit 2protein28030% helix, 17% strandQ13888
CGeneral transcription factor iih subunit 4protein38648% helix, 8% strandQ92759
GDNA repair protein complementing xp-a cellsprotein13442% helix, 10% strandP23025

Ligands and binding sites

  • SF4 · Iron/sulfur cluster · ligand · chains B
  • ZN · Zinc ion · metal · 6 copies · chains E, D, G

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

Pockets

20 pockets found on a 1 Å grid, 15 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
12460.830.9532empty
210580.800.8286empty
310640.790.8184empty
42530.760.8948empty
58560.750.7995empty

Interfaces

17 interfaces between chains.

  • E–D · 2266 Ų buried · 12 hydrogen bonds · protein-protein
  • K–B · 1739 Ų buried · 33 hydrogen bonds · protein-nucleic
  • E–C · 1148 Ų buried · 12 hydrogen bonds · protein-protein
  • F–C · 1055 Ų buried · 9 hydrogen bonds · protein-protein
  • A–C · 1003 Ų buried · 6 hydrogen bonds · protein-protein

Compared structures

  • 6RO4 · Structure of the core TFIIH-XPA-DNA complex · the same entry in another collection · chain G against G, TM-score 1.00
  • P18074 · AlphaFold monomer V2.0 prediction for general transcription and DNA repair factor iih… · a predicted model of the same protein · chain B against A, TM-score 0.98
  • Q13889 · AlphaFold monomer V2.0 prediction for general transcription factor iih subunit 3 (Q13889) · a predicted model of the same protein · chain E against A, TM-score 0.94
  • P19447 · AlphaFold monomer V2.0 prediction for general transcription and DNA repair factor iih… · a predicted model of the same protein · chain A against A, TM-score 0.91

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