SMTL ID : 1nsi.2 (1 other biounit)

HUMAN INDUCIBLE NITRIC OXIDE SYNTHASE, ZN-BOUND, L-ARG COMPLEX

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.55 Å

Oligo State

homo-dimer

Ligands

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

SO4.1: 3 residues within 4Å: Chain A: R.205, G.227, R.228 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:R.205, A:R.228 Salt bridges: A:R.228 SO4.2: 4 residues within 4Å: Chain A: K.262, Y.263, E.264, W.265 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:E.264, A:E.264, A:E.264, A:W.265 SO4.8: 2 residues within 4Å: Chain B: G.227, R.228 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:R.228 Water bridges: B:F.229, B:D.230 Salt bridges: B:R.228 SO4.9: 4 residues within 4Å: Chain B: K.262, Y.263, E.264, W.265 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:E.264, B:W.265

1 x ZN: ZINC ION(Non-covalent)

ZN.3: 4 residues within 4Å: Chain A: C.37, C.42 Chain B: C.37, C.42 4 PLIP interactions: 2 interactions with chain A, 2 interactions with chain B Metal complexes: A:C.37, A:C.42, B:C.37, B:C.42

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

HEM.4: 17 residues within 4Å: Chain A: W.121, R.126, C.127, I.128, G.129, L.136, S.169, F.296, N.297, G.298, W.299, E.304, W.390, Y.416, Y.418 Ligands: H4B.5, ARG.6 15 PLIP interactions: 12 interactions with chain A, 3 Ligand-Ligand interactions Hydrophobic interactions: A:W.121, A:W.121, A:L.136, A:F.296, A:F.296, A:F.296, A:W.299, A:Y.416, A:Y.416, R.6 Hydrogen bonds: A:Y.418, R.6 pi-Stacking: A:W.121 Metal complexes: A:C.127 pi-Cation interactions: R.6 HEM.10: 17 residues within 4Å: Chain B: W.121, A.124, R.126, C.127, I.128, G.129, S.169, F.296, N.297, G.298, W.299, E.304, W.390, Y.416, Y.418 Ligands: H4B.11, ARG.12 16 PLIP interactions: 4 Ligand-Ligand interactions, 12 interactions with chain B Hydrophobic interactions: R.12, B:W.121, B:W.121, B:A.124, B:I.128, B:F.296, B:F.296, B:F.296, B:W.299, B:W.299, B:E.304 Hydrogen bonds: R.12 pi-Cation interactions: R.12, R.12 pi-Stacking: B:W.121 Metal complexes: B:C.127

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

H4B.5: 11 residues within 4Å: Chain A: S.45, M.47, R.308, I.389, W.390 Chain B: W.388, F.403, H.404, Q.405, E.406 Ligands: HEM.4 10 PLIP interactions: 8 interactions with chain A, 2 interactions with chain B Hydrogen bonds: A:R.308, A:R.308, A:I.389, A:W.390 pi-Stacking: A:W.390, A:W.390 pi-Cation interactions: A:W.390, A:W.390 Hydrophobic interactions: B:E.406 Water bridges: B:H.404 H4B.11: 10 residues within 4Å: Chain A: W.388, F.403, H.404, Q.405, E.406 Chain B: S.45, R.308, I.389, W.390 Ligands: HEM.10 8 PLIP interactions: 1 interactions with chain A, 7 interactions with chain B Hydrophobic interactions: A:E.406 Hydrogen bonds: B:R.308, B:R.308, B:I.389, B:W.390 pi-Stacking: B:W.390, B:W.390 pi-Cation interactions: B:W.390

2 x ARG: ARGININE(Non-covalent)

ARG.6: 10 residues within 4Å: Chain A: Q.190, Y.274, P.277, V.279, G.298, W.299, Y.300, E.304, D.309 Ligands: HEM.4 10 PLIP interactions: 9 interactions with chain A, 1 Ligand-Ligand interactions Hydrogen bonds: A:Q.190, A:Q.190, A:P.277, A:G.298, A:W.299 Water bridges: A:R.193, A:R.315, A:R.315, R.6 Salt bridges: A:E.304 ARG.12: 9 residues within 4Å: Chain B: Q.190, Y.274, P.277, G.298, W.299, Y.300, E.304, D.309 Ligands: HEM.10 13 PLIP interactions: 1 Ligand-Ligand interactions, 12 interactions with chain B Water bridges: R.12, B:R.193, B:D.309, B:R.315 Hydrogen bonds: B:Q.190, B:Q.190, B:Y.274, B:P.277, B:G.298, B:W.299, B:Y.300, B:E.304 Salt bridges: B:E.304

2 x GOL: GLYCEROL(Non-functional Binders)

GOL.7: 6 residues within 4Å: Chain A: D.183, R.185, Q.237, A.422, T.425, H.426 7 PLIP interactions: 7 interactions with chain A Hydrogen bonds: A:D.183, A:R.185, A:Q.237, A:T.425, A:T.425, A:T.425, A:H.426 GOL.13: 5 residues within 4Å: Chain B: D.183, R.185, Q.237, T.425, H.426 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:D.183, B:Q.237, B:T.425

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Li, H. et al., Crystal structures of zinc-free and -bound heme domain of human inducible nitric-oxide synthase. Implications for dimer stability and comparison with endothelial nitric-oxide synthase. J.Biol.Chem. (1999)

Release Date

2000-01-07

Peptides

PROTEIN (NITRIC OXIDE SYNTHASE): AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
C

B
D

PROTEIN (NITRIC OXIDE SYNTHASE)

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