ISDA

Entry Detail

PDB ID:

2ORP

Keywords:

Title:

Murine inducible nitric oxide synthase oxygenase domain (delta 114) 2-[4-(2-Imidazol-1-yl-6-methyl-pyrimidin-4-yl)-1-isobutyryl-piperazin-2-yl]-N-[2-(4-methoxy-phenyl)-ethyl]-acetamide complex

Biological Source:

Source Organism:

Mus musculus

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2007-02-04

Release Date:

2007-04-10

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.97 Å

R-Value Free:

0.25

R-Value Work:

0.21

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:nitric oxide synthase, inducible
Chain IDs:A
Chain Length:389
Number of Molecules:1
Biological Source:Mus musculus

UniProt ID:P29477 Pfam ID:PF02898 EC:1.14.13.39

Ligand Molecules

HEM

R86

Primary Citation

Design, Synthesis, and Activity of 2-Imidazol-1-ylpyrimidine Derived Inducible Nitric Oxide Synthase Dimerization Inhibitors

Davey, D.D, Adler, M, Arnaiz, D, Eagen, K, Erickson, S, Guilford, W, Kenrick, M, Morrissey, M.M, Ohlmeyer, M, Pan, G, Paradkar, V.M, Parkinson, J, Polokoff, M, Saionz, K, Santos, C, Subramanyam, B, Vergona, R, Wei, R.G, Whitlow, M, Ye, B, Zhao, Z.S, Devlin, J.J, Phillips, G, Mcmillan, K, Adler, M, Auld, D.S, Baldwin, J.J, Blasko, E, Browne, L.J, Chelsky, D, Davey, D, Dolle, R.E, Eagan, K.A, Erickson, S, Glaser, C, Mallari, C, Morrissey, M.M, Ohlmeyer, M.H.J, Pan, G, Parkinson, J.F, Phillips, G.B, Polokoff, M.A, Sigal, N.H, Vergona, R, Whitlow, M, Devl, J.J, Crane, B.R, Arvai, A.S, Gachhui, R, Wu, C, Ghosh, D.K, Getzoff, E.D, Stuehr, D.J, Tainer, J.A, Ghosh, D.K, Wu, C, Pitters, E, Moloney, M, Werner, E.R, Mayer, B, Stuehr, D.J.Show

J.Med.Chem. 50 1146 1157 (2007)

PMID: 17315988 DOI: 10.1021/jm061319i

Abstact

By the screening of a combinatorial library for inhibitors of nitric oxide (NO) formation by the inducible isoform of nitric oxide synthase (iNOS) using a whole-cell assay, 2-(imidazol-1-yl)pyrimidines were identified. Compounds were found to inhibit the dimerization of iNOS monomers, thus preventing the formation of the dimeric, active form of the enzyme. Optimization led to the selection of the potent, selective, and orally available iNOS dimerization inhibitor, 21b, which significantly ameliorated adjuvant-induced arthritis in a rat model. Analysis of the crystal structure of the 21b--iNOS monomer complex provided a rationalization for both the SAR and the mechanism by which 21b blocks the formation of the protein--protein interaction present in the dimeric form of iNOS.

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Primary Citation of related structures