SMTL ID : 9q4i.2 (1 other biounit)

Structure of human neuronal nitric oxide synthase R354A/G357D mutant heme domain bound with 6-((5-(2-(ethyl(methyl)amino)ethyl)-2,3-difluorophenxy)methyl)-4-methylphridin-2-amine

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.09 Å

Oligo State

homo-dimer

Ligands

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

HEM.1: 19 residues within 4Å: Chain A: W.113, A.116, R.118, C.119, V.120, G.121, L.128, M.274, F.288, S.289, G.290, W.291, M.293, E.296, W.382, F.408, Y.410 Ligands: H4B.2, 01.3 23 PLIP interactions: 23 interactions with chain A, Hydrophobic interactions: A:W.113, A:W.113, A:W.113, A:A.116, A:R.118, A:L.128, A:F.288, A:F.288, A:F.288, A:W.291, A:W.291, A:E.296, A:W.382, A:W.382, A:F.408, A:F.408, A:F.408 Hydrogen bonds: A:Y.410 Water bridges: A:R.300, A:R.300 Salt bridges: A:R.118 pi-Stacking: A:W.113 Metal complexes: A:C.119 HEM.7: 21 residues within 4Å: Chain B: W.113, A.116, R.118, C.119, V.120, G.121, L.128, S.161, M.274, F.288, S.289, G.290, W.291, M.293, E.296, V.353, W.382, F.408, Y.410 Ligands: H4B.8, 01.9 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:L.128, B:F.288, B:F.288, B:F.288, B:F.288, B:W.291, B:W.291, B:E.296, B:V.353, 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 Salt bridges: 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: 12 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, 01.3 9 PLIP interactions: 1 interactions with chain B, 8 interactions with chain A Hydrophobic interactions: B:E.398 Hydrogen bonds: A:R.300, 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.8: 12 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.7, 01.9 12 PLIP interactions: 11 interactions with chain B, 1 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 pi-Stacking: B:W.382, B:W.382 pi-Cation interactions: B:W.382 Hydrophobic interactions: A:E.398

2 x 01: 6-[(5-{2-[ethyl(methyl)amino]ethyl}-2,3-difluorophenoxy)methyl]-4-methylpyridin-2-amine

01.3: 16 residues within 4Å: Chain A: M.40, Q.182, R.185, Y.266, P.269, A.270, V.271, F.288, G.290, W.291, Y.292, M.293, E.296, W.382 Ligands: HEM.1, H4B.2 7 PLIP interactions: 7 interactions with chain A Hydrophobic interactions: A:P.269, A:V.271, A:F.288, A:W.382 Hydrogen bonds: A:M.293, A:E.296 Halogen bonds: A:Y.266 01.9: 15 residues within 4Å: Chain B: Q.182, R.185, Y.266, P.269, A.270, V.271, F.288, S.289, G.290, W.291, Y.292, E.296, W.382 Ligands: HEM.7, H4B.8 7 PLIP interactions: 7 interactions with chain B Hydrophobic interactions: B:P.269, B:V.271, B:F.288, B:W.382 Hydrogen bonds: B:M.293, B:E.296 Halogen bonds: B:Y.266

3 x GOL: GLYCEROL(Non-functional Binders)

GOL.4: 3 residues within 4Å: Chain A: K.23, Q.68, R.373 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:R.373 Water bridges: A:Q.68, A:Q.68 GOL.5: 6 residues within 4Å: Chain A: I.106, K.110, S.126, L.128, Q.129, V.130 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:K.110, A:S.126, A:V.130, A:V.130 Water bridges: A:Q.129 GOL.10: 4 residues within 4Å: Chain B: L.20, K.23, Q.68, R.373 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:Q.68, B:R.373 Water bridges: B:Q.68, B:Y.107

1 x ZN: ZINC ION(Non-covalent)

ZN.6: 6 residues within 4Å: Chain A: C.30, C.35, M.36 Chain B: C.30, C.35, M.36 4 PLIP interactions: 2 interactions with chain A, 2 interactions with chain B Metal complexes: A:C.30, A:C.35, B:C.30, B:C.35

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Ansari, A. et al., Highly potent, selective, and membrane permeable ether linked 2-aminopyridine-based human neuronal nitric oxide synthase inhibitors. To Be Published

Release Date

2025-09-10

Peptides

Nitric oxide synthase, brain: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
C

B
D

Nitric oxide synthase, brain

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