SMTL ID : 8ufr.1 (1 other biounit)

Structure of human endothelial nitric oxide synthase heme domain in complex with 4-methyl-7-(4-methyl-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepin-7-yl)quinolin-2-amine dihydrochloride

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.87 Å

Oligo State

homo-dimer

Ligands

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

HEM.1: 18 residues within 4Å: Chain A: W.138, A.141, R.143, C.144, V.145, S.186, F.313, S.314, G.315, W.316, M.318, E.321, V.378, W.407, F.433, Y.435 Ligands: H4B.2, WK2.3 18 PLIP interactions: 18 interactions with chain A, Hydrophobic interactions: A:W.138, A:W.138, A:A.141, A:F.313, A:F.313, A:F.313, A:F.313, A:F.313, A:W.316, A:E.321, A:V.378, A:F.433, A:F.433, A:F.433 Hydrogen bonds: A:Y.435 Salt bridges: A:R.143 pi-Stacking: A:W.138 Metal complexes: A:C.144 HEM.11: 19 residues within 4Å: Chain B: W.138, A.141, R.143, C.144, V.145, G.146, L.153, S.186, F.313, S.314, G.315, W.316, M.318, E.321, W.407, F.433, Y.435 Ligands: H4B.12, WK2.13 18 PLIP interactions: 18 interactions with chain B, Hydrophobic interactions: B:W.138, B:W.138, B:W.138, B:A.141, B:L.153, B:F.313, B:F.313, B:F.313, B:W.316, B:E.321, B:F.433, B:F.433, B:F.433 Water bridges: B:E.321, B:R.325 Salt bridges: B:R.143 pi-Stacking: B:W.138 Metal complexes: B:C.144

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

H4B.2: 12 residues within 4Å: Chain A: S.62, V.64, R.325, A.406, W.407 Chain B: W.405, F.420, H.421, Q.422, E.423 Ligands: HEM.1, WK2.3 8 PLIP interactions: 1 interactions with chain B, 7 interactions with chain A Hydrophobic interactions: B:E.423 Hydrogen bonds: A:R.325, A:R.325, A:A.406, A:W.407 pi-Stacking: A:W.407, A:W.407 pi-Cation interactions: A:W.407 H4B.12: 12 residues within 4Å: Chain A: W.405, F.420, H.421, Q.422, E.423 Chain B: S.62, V.64, R.325, A.406, W.407 Ligands: HEM.11, WK2.13 8 PLIP interactions: 7 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:R.325, B:R.325, B:A.406, B:W.407 pi-Stacking: B:W.407, B:W.407 pi-Cation interactions: B:W.407 Hydrophobic interactions: A:E.423

2 x WK2: (7M)-4-methyl-7-(4-methyl-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)quinolin-2-amine(Non-covalent)

WK2.3: 8 residues within 4Å: Chain A: P.294, V.296, F.313, W.316, Y.317, E.321 Ligands: HEM.1, H4B.2 4 PLIP interactions: 4 interactions with chain A Hydrophobic interactions: A:P.294, A:V.296 Hydrogen bonds: A:M.318, A:E.321 WK2.13: 10 residues within 4Å: Chain B: P.294, V.296, F.313, W.316, Y.317, M.318, E.321, W.407 Ligands: HEM.11, H4B.12 5 PLIP interactions: 5 interactions with chain B Hydrophobic interactions: B:P.294, B:V.296, B:W.407 Hydrogen bonds: B:M.318, B:E.321

6 x BTB: 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL(Non-covalent)

BTB.4: 5 residues within 4Å: Chain A: W.282, V.341, C.342, D.344 Ligands: GD.10 2 PLIP interactions: 2 interactions with chain A Water bridges: A:D.344 Salt bridges: A:D.344 BTB.5: 3 residues within 4Å: Chain A: E.337, T.347, R.348 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:E.337, A:T.347, A:T.347 Salt bridges: A:E.337 BTB.6: 1 residues within 4Å: Chain A: E.258 1 PLIP interactions: 1 interactions with chain A Salt bridges: A:E.258 BTB.14: 3 residues within 4Å: Chain B: T.279, E.281 Ligands: GD.18 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:E.281, B:E.281 Salt bridges: B:E.281 BTB.15: 2 residues within 4Å: Chain B: D.257, E.258 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:D.257 Salt bridges: B:E.258 BTB.16: 2 residues within 4Å: Chain B: E.337, T.347 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:E.337, B:T.347, B:T.347 Salt bridges: B:E.337

1 x ZN: ZINC ION(Non-covalent)

ZN.7: 4 residues within 4Å: Chain A: C.54, C.59 Chain B: C.54, C.59 4 PLIP interactions: 2 interactions with chain B, 2 interactions with chain A Metal complexes: B:C.54, B:C.59, A:C.54, A:C.59

1 x GOL: GLYCEROL(Non-functional Binders)

GOL.8: 1 residues within 4Å: Chain A: E.127 No protein-ligand interaction detected (PLIP)

2 x CL: CHLORIDE ION(Non-functional Binders)

CL.9: 4 residues within 4Å: Chain A: Q.207, Y.291, Y.317, N.326 Ligand excluded by PLIP CL.17: 5 residues within 4Å: Chain B: Q.207, R.210, Y.291, Y.317, N.326 Ligand excluded by PLIP

2 x GD: GADOLINIUM ATOM(Non-functional Binders)(Non-covalent)

GD.10: 1 residues within 4Å: Ligands: BTB.4 No protein-ligand interaction detected (PLIP) GD.18: 3 residues within 4Å: Chain B: T.279, E.281 Ligands: BTB.14 3 PLIP interactions: 2 interactions with chain B, 1 Ligand-Water interactions Metal complexes: B:T.279, B:E.281, H2O.7

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Li, H. et al., Crystallographic and Computational Insights into Isoform-Selective Dynamics in Nitric Oxide Synthase. Biochemistry (2024)

Release Date

2024-03-13

Peptides

Nitric oxide synthase, endothelial: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Nitric oxide synthase, endothelial

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