ISDA: 3C49

Deposition Date 2008-01-29

Release Date 2008-02-12

Last Version Date 2023-08-30

Entry Detail

PDB ID:

3C49

Keywords:

TRANSFERASE

Title:

Human poly(ADP-ribose) polymerase 3, catalytic fragment in complex with an inhibitor KU0058948

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.80 Å

R-Value Free:

0.25

R-Value Work:

0.18

R-Value Observed:

0.19

Space Group:

P 1 21 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Poly(ADP-ribose) polymerase 3
Gene (Uniprot):PARP3
Chain IDs:A
Chain Length:357
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q9Y6F1 Pfam ID:PF02877, PF00644 EC:2.4.2.30

Ligand Molecules

KU8

Primary Citation

Structural basis for inhibitor specificity in human poly(ADP-ribose) polymerase-3.

Lehtio, L, Jemth, A.S, Collins, R, Loseva, O, Johansson, A, Markova, N, Hammarstrom, M, Flores, A, Holmberg-Schiavone, L, Weigelt, J, Helleday, T, Schuler, H, Karlberg, T.Show

J.Med.Chem. 52 3108 3111 (2009)

PMID: 19354255 DOI: 10.1021/jm900052j

Abstact

Poly(ADP-ribose) polymerases (PARPs) activate DNA repair mechanisms upon stress- and cytotoxin-induced DNA damage, and inhibition of PARP activity is a lead in cancer drug therapy. We present a structural and functional analysis of the PARP domain of human PARP-3 in complex with several inhibitors. Of these, KU0058948 is the strongest inhibitor of PARP-3 activity. The presented crystal structures highlight key features for potent inhibitor binding and suggest routes for creating isoenzyme-specific PARP inhibitors.

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