SMTL ID : 2g6j.1

Structure of rat nNOS (L337N) heme domain (4-aminobiopterin bound) complexed with NO

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.30 Å

Oligo State

homo-dimer

Ligands

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

ACT.1: 3 residues within 4Å: Chain A: Q.122, W.289 Ligands: HEM.3 2 PLIP interactions: 2 interactions with chain A Hydrophobic interactions: A:Q.122, A:W.289 ACT.7: 5 residues within 4Å: Chain B: G.119, I.121, W.289, A.356, S.359 3 PLIP interactions: 3 interactions with chain B Hydrophobic interactions: B:I.121 Hydrogen bonds: B:W.289, B:S.359

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, M.272, F.286, S.287, G.288, W.289, E.294, W.380, F.406, Y.408 Ligands: ACT.1, 7AP.4, ARG.5, NO.6 20 PLIP interactions: 18 interactions with chain A, 2 Ligand-Ligand interactions Hydrophobic interactions: A:W.111, 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:W.380, A:F.406, A:F.406, A:F.406 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, NO.6 HEM.8: 19 residues within 4Å: Chain B: W.111, A.114, R.116, C.117, V.118, G.119, M.272, F.286, S.287, G.288, W.289, M.291, E.294, W.380, F.406, Y.408 Ligands: 7AP.9, ARG.10, NO.11 19 PLIP interactions: 16 interactions with chain B, 3 Ligand-Ligand interactions Hydrophobic interactions: B:W.111, B:W.111, B:A.114, B:R.116, B:F.286, B:F.286, B:F.286, B:W.289, B:W.289, B:E.294, B:F.406, B:F.406, B:F.406 Hydrogen bonds: B:R.116, R.10 pi-Stacking: B:W.111 Metal complexes: B:C.117, NO.11 pi-Cation interactions: R.10

2 x 7AP: (1S,2S)-1-(2,4-DIAMINOPTERIDIN-6-YL)PROPANE-1,2-DIOL(Non-covalent)

7AP.4: 9 residues within 4Å: Chain A: S.36, M.38, R.298, V.379, W.380 Chain B: W.8, W.378, F.393 Ligands: HEM.3 8 PLIP interactions: 1 interactions with chain B, 7 interactions with chain A Hydrogen bonds: B:F.393, A:R.298, A:R.298, A:W.380 Hydrophobic interactions: A:M.38 pi-Stacking: A:W.380, A:W.380, A:W.380 7AP.9: 10 residues within 4Å: Chain A: W.8, W.378, F.393, H.394 Chain B: S.36, M.38, R.298, V.379, W.380 Ligands: HEM.8 10 PLIP interactions: 8 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:M.38 Hydrogen bonds: B:R.298, B:R.298, B:W.380, A:W.378 pi-Stacking: B:W.380, B:W.380, B:W.380, A:F.393 pi-Cation interactions: B:W.380

2 x ARG: ARGININE(Non-covalent)

ARG.5: 10 residues within 4Å: Chain A: Q.180, Y.264, P.267, V.269, W.289, Y.290, E.294, D.299 Ligands: HEM.3, NO.6 13 PLIP interactions: 11 interactions with chain A, 2 Ligand-Ligand interactions Hydrophobic interactions: A:V.269, A:Y.290 Hydrogen bonds: A:Q.180, A:Y.264, A:W.289, A:W.289, A:E.294, R.5 Water bridges: A:D.299, A:R.305, A:R.305, R.5 Salt bridges: A:E.294 ARG.10: 10 residues within 4Å: Chain B: Q.180, Y.264, P.267, V.269, W.289, Y.290, E.294, D.299 Ligands: HEM.8, NO.11 15 PLIP interactions: 13 interactions with chain B, 2 Ligand-Ligand interactions Hydrophobic interactions: B:V.269, B:Y.290 Hydrogen bonds: B:Q.180, B:W.289, B:Y.290, B:E.294, B:E.294, R.10 Water bridges: B:R.183, B:R.183, B:P.267, B:D.299, B:R.305, R.10 Salt bridges: B:E.294

2 x NO: NITRIC OXIDE(Non-covalent)

NO.6: 3 residues within 4Å: Chain A: F.286 Ligands: HEM.3, ARG.5 1 PLIP interactions: 1 Ligand-Ligand interactions Hydrogen bonds: R.5 NO.11: 3 residues within 4Å: Chain B: F.286 Ligands: HEM.8, ARG.10 1 PLIP interactions: 1 Ligand-Ligand interactions Hydrogen bonds: R.10

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