SMTL ID : 6cic.1

Structure of the human nitric oxide synthase R354A/G357D mutant 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 1.75 Å

Oligo State

homo-dimer

Ligands

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

HEM.1: 19 residues within 4Å: Chain A: H.45, W.113, A.116, R.118, C.119, V.120, G.121, S.161, F.288, S.289, W.291, M.293, E.296, V.353, W.382, F.408, Y.410 Ligands: H4B.2, 7R2.3 25 PLIP interactions: 25 interactions with chain A, Hydrophobic interactions: A:W.113, A:W.113, A:W.113, A:A.116, A:R.118, A:V.120, A:F.288, A:F.288, A:F.288, A:W.291, A:W.291, A:E.296, A:V.353, A:W.382, A:W.382, A:F.408, A:F.408 Hydrogen bonds: A:Y.410, A:Y.410 Water bridges: A:R.300, A:R.300 Salt bridges: A:H.45, A:R.118 pi-Stacking: A:W.113 Metal complexes: A:C.119 HEM.6: 20 residues within 4Å: Chain B: H.45, W.113, A.116, R.118, C.119, V.120, G.121, L.128, S.161, F.288, S.289, G.290, W.291, M.293, E.296, W.382, F.408, Y.410 Ligands: H4B.7, 7R2.8 24 PLIP interactions: 24 interactions with chain B, Hydrophobic interactions: B:W.113, B:W.113, B:W.113, B:A.116, B:R.118, B:V.120, B:L.128, B:F.288, B:F.288, B:W.291, B:W.291, B:E.296, B:W.382, B:W.382, B:F.408, B:F.408 Hydrogen bonds: B:Y.410 Water bridges: B:R.300, B:R.300, B:R.403 Salt bridges: B:H.45, B:R.118 pi-Stacking: B:W.113 Metal complexes: B:C.119

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

H4B.2: 11 residues within 4Å: Chain A: S.38, M.40, R.300, V.381, W.382 Chain B: W.380, F.395, H.396, Q.397, E.398 Ligands: HEM.1 14 PLIP interactions: 2 interactions with chain B, 12 interactions with chain A Hydrophobic interactions: B:E.398 Water bridges: B:H.396, A:S.38, A:R.300, A:R.300, A:R.300, A:W.382 Hydrogen bonds: A:R.300, A:V.381, A:W.382 pi-Stacking: A:W.382, A:W.382 pi-Cation interactions: A:W.382, A:W.382 H4B.7: 11 residues within 4Å: Chain A: W.380, F.395, H.396, Q.397, E.398 Chain B: S.38, M.40, R.300, V.381, W.382 Ligands: HEM.6 14 PLIP interactions: 12 interactions with chain B, 2 interactions with chain A Hydrogen bonds: B:R.300, B:V.381, B:W.382 Water bridges: B:S.38, B:R.300, B:R.300, B:R.300, B:W.382, A:H.396 pi-Stacking: B:W.382, B:W.382 pi-Cation interactions: B:W.382, B:W.382 Hydrophobic interactions: A:E.398

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

7R2.3: 12 residues within 4Å: Chain A: Q.182, R.185, P.269, V.271, M.274, F.288, S.289, G.290, W.291, E.296, Y.410 Ligands: HEM.1 6 PLIP interactions: 6 interactions with chain A Hydrophobic interactions: A:P.269, A:V.271, A:V.271, A:F.288 Hydrogen bonds: A:W.291, A:E.296 7R2.8: 12 residues within 4Å: Chain B: Q.182, R.185, P.269, V.271, M.274, F.288, S.289, G.290, W.291, E.296, Y.410 Ligands: HEM.6 6 PLIP interactions: 6 interactions with chain B Hydrophobic interactions: B:P.269, B:V.271, B:V.271, B:F.288 Hydrogen bonds: B:W.291, B:E.296

2 x GOL: GLYCEROL(Non-functional Binders)

GOL.4: 3 residues within 4Å: Chain A: K.23, Q.68, R.373 7 PLIP interactions: 7 interactions with chain A Hydrogen bonds: A:Q.68, A:R.373 Water bridges: A:Q.68, A:Q.68, A:Y.107, A:R.114, A:R.114 GOL.9: 4 residues within 4Å: Chain B: L.20, K.23, Q.68, R.373 8 PLIP interactions: 8 interactions with chain B Hydrogen bonds: B:Q.68, B:R.373, B:R.373 Water bridges: B:K.23, B:E.64, B:Q.68, B:Q.68, B:R.114

1 x ZN: ZINC ION(Non-covalent)

ZN.5: 4 residues within 4Å: Chain A: C.30, C.35 Chain B: C.30, C.35 4 PLIP interactions: 2 interactions with chain B, 2 interactions with chain A Metal complexes: B:C.30, B:C.35, A:C.30, A:C.35

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, brain: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Nitric oxide synthase, brain

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