ISDA

Deposition Date 2004-08-20

Release Date 2005-03-15

Last Version Date 2023-10-25

Entry Detail

PDB ID:

1WOK

Keywords:

TRANSFERASE

Title:

Crystal structure of catalytic domain of human poly(ADP-ribose) polymerase complexed with a quinoxaline-type inhibitor

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.00 Å

R-Value Free:

0.28

R-Value Work:

0.23

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Poly [ADP-ribose] polymerase-1
Gene (Uniprot):PARP1
Chain IDs:A, B, C, D
Chain Length:350
Number of Molecules:4
Biological Source:Homo sapiens

UniProt ID:P09874 Pfam ID:PF02877, PF00644 EC:2.4.2.30

Ligand Molecules

CNQ

Primary Citation

Discovery of quinazolinone and quinoxaline derivatives as potent and selective poly(ADP-ribose) polymerase-1/2 inhibitors.

Iwashita, A, Hattori, K, Yamamoto, H, Ishida, J, Kido, Y, Kamijo, K, Murano, K, Miyake, H, Kinoshita, T, Warizaya, M, Ohkubo, M, Matsuoka, N, Mutoh, S.Show

Febs Lett. 579 1389 1393 (2005)

PMID: 15733846 DOI: 10.1016/j.febslet.2005.01.036

Abstact

Two classes of quinazolinone derivatives and quinoxaline derivatives were identified as potent and selective poly(ADP-ribose) polymerase-1 and 2 (PARP-1) and (PARP-2) inhibitors, respectively. In PARP enzyme assays using recombinant PARP-1 and PARP-2, quinazolinone derivatives displayed relatively high selectivity for PARP-1 and quinoxaline derivatives showed superior selectivity for PARP-2. SBDD analysis via a combination of X-ray structural study and homology modeling suggested distinct interactions of inhibitors with PARP-1 and PARP-2. These findings provide a new structural framework for the design of selective inhibitors for PARP-1 and PARP-2.

Legend

Protein

Chemical

Disease

Primary Citation of related structures