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MolNFT v1 · #184541 · protein + DNA

Crystal structure of PIF1 helicase from candida albicans

7OTJ · ATP-dependent DNA helicase PIF1: “Crystal structure of PIF1 helicase from candida albicans”. X-ray diffraction, 5 ligands (ADP, ALF, K), 13 pockets (best druggability 0.83). MolNFT v1 #184541 on GenesisL1: 3D structure, binding…

PDB
7OTJ
Type
protein + DNA
Length
884 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
ATP-dependent DNA helicase PIF1; DNA (5'-D(P*TP*TP*TP*TP*TP*T)-3')
EC
3.6.4.12
UniProt
Q59RQ0
Ligands
ADP, ALF, K, MG, PO4
Pockets
13 · best druggability 0.83

Structure

x-ray diffraction · 3 distinct chains · 36% helix, 21% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AATP-dependent DNA helicase PIF1 (EC 3.6.4.12)protein43836% helix, 22% strandQ59RQ0
BATP-dependent DNA helicase PIF1 (EC 3.6.4.12)protein43636% helix, 20% strandQ59RQ0
C, DDNA (5'-D(P*TP*TP*TP*TP*TP*T)-3')dna5——

Ligands and binding sites

  • ADP · Adenosine-5'-diphosphate · ligand · 2 copies · chains A, B
  • ALF · Tetrafluoroaluminate ion · ligand · 2 copies · chains A, B
  • K · Potassium ion · metal · 10 copies · chains A, B
  • MG · Magnesium ion · metal · 2 copies · chains A, B
  • PO4 · Phosphate ion · ion · 5 copies · chains A, B

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

Pockets

13 pockets found on a 1 Å grid, 6 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
111370.830.84102K
25310.760.8464empty
3960.600.8827ADP, ALF, MG
42130.580.8025empty
5880.550.8623ADP, ALF, MG

Interfaces

4 interfaces between chains.

  • A–B · 1149 Ų buried · 9 hydrogen bonds · protein-protein
  • B–D · 785 Ų buried · 10 hydrogen bonds · protein-nucleic
  • A–C · 771 Ų buried · 11 hydrogen bonds · protein-nucleic
  • B–C · 65 Ų buried · 2 hydrogen bonds · protein-nucleic

Compared structures

  • 7OTJ · Crystal structure of Pif1 helicase from Candida albicans · the same entry in another collection · chain D against D, TM-score 1.00
  • Q59RQ0 · AlphaFold monomer V2.0 prediction for ATP-dependent DNA helicase PIF1 (Q59RQ0) · a predicted model of the same protein · chain A against A, TM-score 0.78

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