SMTL ID : 2g6i.1

Structure of rat nNOS heme domain (BH2-bound) in the reduced form

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 1.90 Å

Oligo State

homo-dimer

Ligands

2 x ACT: ACETATE ION(Non-functional Binders)

ACT.1: 5 residues within 4Å: Chain A: G.119, Q.122, W.289, V.351, S.359 4 PLIP interactions: 4 interactions with chain A Hydrophobic interactions: A:Q.122, A:W.289 Hydrogen bonds: A:S.359, A:S.359 ACT.6: 6 residues within 4Å: Chain B: G.119, I.121, Q.122, W.289, V.351, S.359 3 PLIP interactions: 3 interactions with chain B Hydrophobic interactions: B:Q.122, B:W.289 Hydrogen bonds: B:W.289

1 x ZN: ZINC ION(Non-covalent)

ZN.2: 4 residues within 4Å: Chain A: C.28, C.33 Chain B: C.28, C.33 4 PLIP interactions: 2 interactions with chain A, 2 interactions with chain B Metal complexes: A:C.28, A:C.33, B:C.28, B:C.33

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

HEM.3: 19 residues within 4Å: Chain A: W.111, A.114, R.116, C.117, V.118, G.119, S.159, M.272, F.286, S.287, G.288, W.289, M.291, E.294, W.380, F.406, Y.408 Ligands: HBI.4, ARG.5 22 PLIP interactions: 18 interactions with chain A, 4 Ligand-Ligand interactions Hydrophobic interactions: A:W.111, A:W.111, A:A.114, A:R.116, A:F.286, A:F.286, A:F.286, A:W.289, A:E.294, A:W.380, A:F.406, A:F.406, A:F.406, R.5 Hydrogen bonds: A:R.116, A:Y.408, R.5 Water bridges: A:R.298 pi-Stacking: A:W.111 Metal complexes: A:C.117 pi-Cation interactions: R.5, R.5 HEM.7: 19 residues within 4Å: Chain B: W.111, A.114, R.116, C.117, V.118, G.119, L.126, M.272, F.286, S.287, G.288, W.289, M.291, E.294, W.380, F.406, Y.408 Ligands: HBI.8, ARG.9 18 PLIP interactions: 16 interactions with chain B, 2 Ligand-Ligand interactions Hydrophobic interactions: B:W.111, B:W.111, B:A.114, B:R.116, B:L.126, B:F.286, B:F.286, B:F.286, B:W.289, B:W.289, B:E.294, B:F.406, B:F.406 Hydrogen bonds: B:R.116, R.9 pi-Stacking: B:W.111 Metal complexes: B:C.117 pi-Cation interactions: R.9

2 x HBI: 7,8-DIHYDROBIOPTERIN(Non-covalent)

HBI.4: 11 residues within 4Å: Chain A: S.36, M.38, R.298, V.379, W.380 Chain B: W.378, F.393, H.394, Q.395, E.396 Ligands: HEM.3 13 PLIP interactions: 3 interactions with chain B, 10 interactions with chain A Hydrophobic interactions: B:E.396 Water bridges: B:H.394, A:S.36, A:W.380 pi-Stacking: B:F.393, A:W.380, A:W.380, A:W.380 Hydrogen bonds: A:R.298, A:R.298, A:W.380 pi-Cation interactions: A:W.380, A:W.380 HBI.8: 11 residues within 4Å: Chain A: W.378, F.393, H.394, Q.395, E.396 Chain B: S.36, M.38, R.298, V.379, W.380 Ligands: HEM.7 11 PLIP interactions: 2 interactions with chain A, 9 interactions with chain B Hydrophobic interactions: A:E.396 pi-Stacking: A:F.393, B:W.380, B:W.380, B:W.380 Hydrogen bonds: B:R.298, B:W.380 Water bridges: B:R.298, B:R.298 pi-Cation interactions: B:W.380, B:W.380

2 x ARG: ARGININE(Non-covalent)

ARG.5: 9 residues within 4Å: Chain A: Q.180, Y.264, P.267, V.269, W.289, Y.290, E.294, D.299 Ligands: HEM.3 12 PLIP interactions: 9 interactions with chain A, 3 Ligand-Ligand interactions Hydrophobic interactions: A:V.269 Hydrogen bonds: A:Q.180, A:Y.264, A:W.289, A:E.294, R.5 Water bridges: A:R.183, A:P.267, A:D.299, R.5, R.5 Salt bridges: A:E.294 ARG.9: 9 residues within 4Å: Chain B: Q.180, Y.264, P.267, V.269, W.289, Y.290, E.294, D.299 Ligands: HEM.7 15 PLIP interactions: 13 interactions with chain B, 2 Ligand-Ligand interactions Hydrophobic interactions: B:V.269 Hydrogen bonds: B:Q.180, B:W.289, B:Y.290, B:E.294, B:E.294, R.9 Water bridges: B:R.183, B:R.183, B:P.267, B:D.299, B:R.305, B:R.305, R.9 Salt bridges: B:E.294

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Li, H. et al., Structural studies of constitutive nitric oxide synthases with diatomic ligands bound. J.Biol.Inorg.Chem. (2006)

Release Date

2006-08-08

Peptides

Nitric-oxide synthase, brain: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Nitric-oxide synthase, brain

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