6VKO

Crystal Structure of human PARP-1 CAT domain bound to inhibitor UKTT15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.284 
  • R-Value Observed: 0.286 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report

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This is version 1.1 of the entry. See complete history


Literature

Structural basis for allosteric PARP-1 retention on DNA breaks.

Zandarashvili, L.Langelier, M.F.Velagapudi, U.K.Hancock, M.A.Steffen, J.D.Billur, R.Hannan, Z.M.Wicks, A.J.Krastev, D.B.Pettitt, S.J.Lord, C.J.Talele, T.T.Pascal, J.M.Black, B.E.

(2020) Science 368

  • DOI: https://doi.org/10.1126/science.aax6367
  • Primary Citation of Related Structures:  
    6NTU, 6VKK, 6VKO, 6VKQ

  • PubMed Abstract: 

    The success of poly(ADP-ribose) polymerase-1 (PARP-1) inhibitors (PARPi) to treat cancer relates to their ability to trap PARP-1 at the site of a DNA break. Although different forms of PARPi all target the catalytic center of the enzyme, they have variable abilities to trap PARP-1. We found that several structurally distinct PARPi drive PARP-1 allostery to promote release from a DNA break. Other inhibitors drive allostery to retain PARP-1 on a DNA break. Further, we generated a new PARPi compound, converting an allosteric pro-release compound to a pro-retention compound and increasing its ability to kill cancer cells. These developments are pertinent to clinical applications where PARP-1 trapping is either desirable or undesirable.


  • Organizational Affiliation

    Department of Biochemistry and Biophysics, Penn Center for Genome Integrity, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Poly [ADP-ribose] polymerase 1
A, B, C, D
372Homo sapiensMutation(s): 1 
Gene Names: PARP1ADPRTPPOL
EC: 2.4.2.30 (PDB Primary Data), 2.4.2 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P09874 (Homo sapiens)
Explore P09874 
Go to UniProtKB:  P09874
PHAROS:  P09874
GTEx:  ENSG00000143799 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP09874
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
L1S (Subject of Investigation/LOI)
Query on L1S

Download Ideal Coordinates CCD File 
E [auth A],
I [auth B],
M [auth C],
Q [auth D]
methyl 2-{4-[4-(7-carbamoyl-1H-benzimidazol-2-yl)benzene-1-carbonyl]piperazin-1-yl}pyrimidine-5-carboxylate
C25 H23 N7 O4
ASPUHGRKEUIGTD-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
H [auth A]
J [auth B]
K [auth B]
F [auth A],
G [auth A],
H [auth A],
J [auth B],
K [auth B],
L [auth B],
N [auth C],
O [auth C],
P [auth C],
R [auth D],
S [auth D],
T [auth D]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.284 
  • R-Value Observed: 0.286 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 139.701α = 90
b = 129.751β = 111.36
c = 102.72γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)CanadaBMA342854

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-17
    Type: Initial release
  • Version 1.1: 2023-10-11
    Changes: Data collection, Database references, Refinement description