SMTL ID : 3nw2.1 (1 other biounit)

Novel nanomolar Imidazopyridines as selective Nitric Oxide Synthase (iNOS) inhibitors: SAR and structural insights

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.80 Å

Oligo State

homo-dimer

Ligands

2 x HEM: PROTOPORPHYRIN IX CONTAINING FE(Non-covalent)

HEM.1: 20 residues within 4Å: Chain A: W.112, R.117, C.118, I.119, G.120, Q.123, L.127, S.160, M.273, F.287, N.288, G.289, W.290, M.292, E.295, W.381, Y.407, Y.409 Ligands: H4B.2, MPW.4 19 PLIP interactions: 19 interactions with chain A, Hydrophobic interactions: A:W.112, A:W.112, A:W.112, A:R.117, A:I.119, A:I.119, A:Q.123, A:L.127, A:L.127, A:F.287, A:F.287, A:F.287, A:F.287, A:F.287, A:W.290, A:W.290, A:Y.407 pi-Stacking: A:W.112 Metal complexes: A:C.118 HEM.5: 20 residues within 4Å: Chain B: W.112, R.117, C.118, I.119, G.120, Q.123, L.127, S.160, M.273, F.287, N.288, G.289, W.290, M.292, E.295, W.381, Y.407, Y.409 Ligands: H4B.6, MPW.8 20 PLIP interactions: 20 interactions with chain B, Hydrophobic interactions: B:W.112, B:W.112, B:W.112, B:R.117, B:I.119, B:I.119, B:Q.123, B:L.127, B:L.127, B:F.287, B:F.287, B:F.287, B:F.287, B:F.287, B:W.290, B:W.290, B:Y.407 Hydrogen bonds: B:Y.409 pi-Stacking: B:W.112 Metal complexes: B:C.118

2 x H4B: 5,6,7,8-TETRAHYDROBIOPTERIN(Non-covalent)

H4B.2: 10 residues within 4Å: Chain A: S.36, R.299, I.380, W.381 Chain B: W.379, F.394, H.395, Q.396, E.397 Ligands: HEM.1 7 PLIP interactions: 6 interactions with chain A, 1 interactions with chain B Hydrogen bonds: A:R.299, A:I.380, A:W.381 pi-Stacking: A:W.381, A:W.381 pi-Cation interactions: A:W.381 Hydrophobic interactions: B:E.397 H4B.6: 10 residues within 4Å: Chain A: W.379, F.394, H.395, Q.396, E.397 Chain B: S.36, R.299, I.380, W.381 Ligands: HEM.5 7 PLIP interactions: 6 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:R.299, B:I.380, B:W.381 pi-Stacking: B:W.381, B:W.381 pi-Cation interactions: B:W.381 Hydrophobic interactions: A:E.397

2 x SO4: SULFATE ION(Non-functional Binders)

SO4.3: 5 residues within 4Å: Chain A: Q.67, M.110, R.372 Chain B: L.18, K.21 3 PLIP interactions: 2 interactions with chain A, 1 interactions with chain B Hydrogen bonds: A:Q.67 Salt bridges: A:R.372, B:K.21 SO4.7: 5 residues within 4Å: Chain A: L.18, K.21 Chain B: Q.67, M.110, R.372 3 PLIP interactions: 2 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:Q.67 Salt bridges: B:R.372, A:K.21

2 x MPW: 2-[2-(4-methoxypyridin-2-yl)ethyl]-3H-imidazo[4,5-b]pyridine(Non-covalent)

MPW.4: 10 residues within 4Å: Chain A: Q.181, R.184, P.268, V.270, F.287, G.289, W.290, E.295, R.306 Ligands: HEM.1 4 PLIP interactions: 4 interactions with chain A Hydrophobic interactions: A:P.268 Hydrogen bonds: A:Q.181, A:G.289 Water bridges: A:Y.291 MPW.8: 10 residues within 4Å: Chain B: Q.181, R.184, P.268, V.270, F.287, G.289, W.290, E.295, R.306 Ligands: HEM.5 3 PLIP interactions: 3 interactions with chain B Hydrophobic interactions: B:P.268 Hydrogen bonds: B:Q.181, B:G.289

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Graedler, U. et al., Novel nanomolar imidazo[4,5-b]pyridines as selective nitric oxide synthase (iNOS) inhibitors: SAR and structural insights. Bioorg.Med.Chem.Lett. (2011)

Release Date

2011-06-22

Peptides

Nitric oxide synthase, inducible: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
A

Nitric oxide synthase, inducible

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