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MolNFT v1 · #30240 · protein

Human DNA topoisomerase iia ATPASE/ADP

1ZXN · DNA topoisomerase II, alpha isozyme: “Human DNA topoisomerase iia ATPASE/ADP”. X-ray diffraction, 3 ligands (ADP, MG, SO4), 12 pockets (best druggability 0.90). MolNFT v1 #30240 on GenesisL1: 3D structure, binding sites and pockets…

PDB
1ZXN
Type
protein
Length
1,500 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA topoisomerase II, alpha isozyme
EC
5.99.1.3
UniProt
P11388
Ligands
ADP, MG, SO4
Pockets
12 · best druggability 0.90

Structure

x-ray diffraction · 4 distinct chains · 32% helix, 29% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADNA topoisomerase II, alpha isozyme (EC 5.99.1.3)protein36629% helix, 29% strandP11388
BDNA topoisomerase II, alpha isozyme (EC 5.99.1.3)protein37935% helix, 28% strandP11388
CDNA topoisomerase II, alpha isozyme (EC 5.99.1.3)protein38433% helix, 30% strandP11388
DDNA topoisomerase II, alpha isozyme (EC 5.99.1.3)protein37129% helix, 31% strandP11388

Ligands and binding sites

  • ADP · Adenosine-5'-diphosphate · ligand · 4 copies · chains A, B, C, D
  • MG · Magnesium ion · metal · 4 copies · chains A, B, C, D
  • SO4 · Sulfate ion · ion · 2 copies · chains B, D
  • GOL · Glycerol · additive · chains A, B

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

Pockets

12 pockets found on a 1 Å grid, 8 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
111640.900.92120MG, ADP, GOL, SO4
210380.860.87119MG, SO4, ADP
32880.800.9233MG, ADP
42490.680.8438empty
51870.670.8637empty

Interfaces

2 interfaces between chains.

  • A–B · 2263 Ų buried · 40 hydrogen bonds · protein-protein
  • C–D · 2044 Ų buried · 34 hydrogen bonds · protein-protein

Compared structures

  • 1ZXN · Human DNA topoisomerase IIa ATPase/ADP · the same entry in another collection · chain D against D, TM-score 1.00
  • P11388 · AlphaFold monomer V2.0 prediction for DNA topoisomerase 2-alpha (P11388) · a predicted model of the same protein · chain A against A, TM-score 0.98

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