SMTL ID : 1k2r.1

Structure of rat brain nNOS heme domain complexed with NG-nitro-L-arginine

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.15 Å

Oligo State

homo-dimer

Ligands

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

ACT.1: 3 residues within 4Å: Chain A: W.289, V.351 Ligands: HEM.2 4 PLIP interactions: 4 interactions with chain A Hydrophobic interactions: A:W.289, A:V.351 Hydrogen bonds: A:W.289, A:S.359 ACT.5: 5 residues within 4Å: Chain B: G.119, I.121, Q.122, W.289, V.351 4 PLIP interactions: 4 interactions with chain B Hydrophobic interactions: B:I.121, B:Q.122 Hydrogen bonds: B:W.289 Water bridges: B:Q.122

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

HEM.2: 20 residues within 4Å: Chain A: W.111, R.116, C.117, V.118, G.119, L.126, S.159, M.272, F.286, S.287, G.288, W.289, M.291, E.294, W.380, F.406, Y.408 Ligands: ACT.1, H4B.3, NRG.4 15 PLIP interactions: 15 interactions with chain A, Hydrophobic interactions: A:W.111, A:W.111, A:R.116, A:L.126, A:F.286, A:F.286, A:F.286, A:W.289, A:E.294, A:F.406, A:F.406 Hydrogen bonds: A:Y.408 Water bridges: A:R.298 pi-Stacking: A:W.111 Metal complexes: A:C.117 HEM.7: 20 residues within 4Å: Chain B: W.111, A.114, R.116, C.117, V.118, G.119, L.126, S.159, M.272, F.286, S.287, G.288, W.289, M.291, E.294, W.380, F.406, Y.408 Ligands: H4B.8, NRG.9 16 PLIP interactions: 16 interactions with chain B, 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:F.286, B:W.289, B:E.294, B:F.406, B:F.406 Water bridges: B:R.298 pi-Stacking: B:W.111 Metal complexes: B:C.117

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

H4B.3: 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.2 12 PLIP interactions: 10 interactions with chain A, 2 interactions with chain B Hydrogen bonds: A:R.298, A:R.298, A:V.379, A:W.380 Water bridges: A:S.36, A:W.380, B:H.394 pi-Stacking: A:W.380, A:W.380 pi-Cation interactions: A:W.380, A:W.380 Hydrophobic interactions: B:E.396 H4B.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: 10 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:R.298, B:R.298, B:V.379, B:W.380 Water bridges: B:S.36, B:W.380 pi-Stacking: B:W.380, B:W.380 pi-Cation interactions: B:W.380, B:W.380 Hydrophobic interactions: A:E.396

2 x NRG: N-OMEGA-NITRO-L-ARGININE(Non-covalent)

NRG.4: 12 residues within 4Å: Chain A: Q.180, Y.264, P.267, V.269, F.286, S.287, G.288, W.289, Y.290, E.294, D.299 Ligands: HEM.2 11 PLIP interactions: 11 interactions with chain A Hydrophobic interactions: A:V.269 Hydrogen bonds: A:Q.180, A:Y.264, A:E.294, A:E.294, A:E.294 Water bridges: A:P.267, A:F.286, A:R.305, A:R.305 Salt bridges: A:E.294 NRG.9: 11 residues within 4Å: Chain B: Q.180, Y.264, P.267, V.269, S.287, G.288, W.289, Y.290, E.294, D.299 Ligands: HEM.7 14 PLIP interactions: 14 interactions with chain B Hydrophobic interactions: B:V.269, B:Y.290 Hydrogen bonds: B:Q.180, B:Y.290, B:E.294, B:E.294 Water bridges: B:Y.264, B:P.267, B:F.286, B:R.305, B:R.305, B:R.305, B:R.305 Salt bridges: B:E.294

1 x ZN: ZINC ION(Non-covalent)

ZN.6: 5 residues within 4Å: Chain A: C.28, C.33, M.34 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

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Li, H. et al., Structure of rat brain nNOS heme domain. To be Published

Release Date

2003-03-04

Peptides

nitric-oxide synthase: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

nitric-oxide synthase

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