SMTL ID : 6cie.1 (1 other biounit)

Structure of human endothelial nitric oxide synthase heme domain in complex with N-(1-(2-(Ethyl(methyl)amino)ethyl)-1,2,3,4-tetrahydroquino-lin-6-yl)thiophene-2-carboximidamide

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.95 Å

Oligo State

homo-dimer

Ligands

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

HEM.1: 20 residues within 4Å: Chain A: W.138, A.141, P.142, R.143, C.144, V.145, G.146, S.186, M.299, F.313, S.314, W.316, M.318, E.321, V.378, W.407, F.433, Y.435 Ligands: H4B.2, 7R2.3 21 PLIP interactions: 21 interactions with chain A, Hydrophobic interactions: A:W.138, A:W.138, A:W.138, A:A.141, A:R.143, A:V.145, A:F.313, A:F.313, A:F.313, A:F.313, A:W.316, A:E.321, A:V.378, A:W.407, A:F.433, A:F.433 Hydrogen bonds: A:R.143, A:E.321 Salt bridges: A:R.143 pi-Stacking: A:W.138 Metal complexes: A:C.144 HEM.11: 20 residues within 4Å: Chain B: W.138, A.141, P.142, R.143, C.144, V.145, G.146, S.186, F.313, S.314, G.315, W.316, M.318, E.321, V.378, W.407, F.433, Y.435 Ligands: H4B.12, 7R2.13 24 PLIP interactions: 24 interactions with chain B, Hydrophobic interactions: B:W.138, B:W.138, B:W.138, B:A.141, B:R.143, B:F.313, B:F.313, B:F.313, B:F.313, B:W.316, B:E.321, B:V.378, B:W.407, B:W.407, B:F.433, B:F.433, B:F.433 Hydrogen bonds: B:R.143, B:Y.435 Water bridges: B:E.321, B:E.321 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: 11 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 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.34, 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 10 PLIP interactions: 2 interactions with chain A, 8 interactions with chain B Hydrophobic interactions: A:E.423 Water bridges: A:H.421, B:R.325, B:R.325 Hydrogen bonds: B:R.325, B:A.406, B:W.407 pi-Stacking: B:W.407, B:W.407 pi-Cation interactions: B:W.407

2 x 7R2: N-(1-{2-[ethyl(methyl)amino]ethyl}-1,2,3,4-tetrahydroquinolin-6-yl)thiophene-2-carboximidamide(Non-covalent)

7R2.3: 10 residues within 4Å: Chain A: P.294, V.296, M.299, F.313, S.314, G.315, W.316, E.321 Ligands: HEM.1, CL.9 5 PLIP interactions: 5 interactions with chain A Hydrophobic interactions: A:P.294, A:V.296, A:F.313 Hydrogen bonds: A:W.316, A:E.321 7R2.13: 12 residues within 4Å: Chain B: Q.207, P.294, V.296, F.313, S.314, G.315, W.316, E.321, W.407, Y.435 Ligands: HEM.11, CL.17 6 PLIP interactions: 6 interactions with chain B Hydrophobic interactions: B:P.294, B:V.296, B:V.296, B:F.313 Hydrogen bonds: B:W.316, 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 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:E.337 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: 1 residues within 4Å: Chain B: E.337 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:E.337 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 A, 2 interactions with chain B Metal complexes: A:C.54, A:C.59, B:C.54, B:C.59

1 x GOL: GLYCEROL(Non-functional Binders)

GOL.8: 1 residues within 4Å: Chain A: E.127 1 PLIP interactions: 1 interactions with chain A Water bridges: A:E.127

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

CL.9: 5 residues within 4Å: Chain A: Q.207, Y.291, Y.317, N.326 Ligands: 7R2.3 Ligand excluded by PLIP CL.17: 4 residues within 4Å: Chain B: Q.207, Y.317, N.326 Ligands: 7R2.13 Ligand excluded by PLIP

2 x GD: GADOLINIUM ATOM(Non-covalent)

GD.10: 2 residues within 4Å: Chain A: D.344 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.6

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Li, H. et al., Structural Basis for Isoform Selective Nitric Oxide Synthase Inhibition by Thiophene-2-carboximidamides. Biochemistry (2018)

Release Date

2018-10-31

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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