SMTL ID : 4l3x.1

Nitrite complex of TvNiR, first middle dose data set

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.85 Å

Oligo State

homo-hexamer

Ligands

48 x HEC: HEME C(Covalent)

HEC.1: 24 residues within 4Å: Chain A: H.109, A.110, P.112, D.121, H.122, V.125, R.127, A.128, A.175, C.180, C.183, K.184, R.238, C.295, H.296, V.297, Y.299, C.301, F.323, H.357, A.480, N.482 Ligands: HEC.3, NO2.9 21 PLIP interactions: 20 interactions with chain A, 1 Ligand-Water interactions Hydrophobic interactions: A:P.112, A:P.112, A:V.125, A:A.128, A:V.297, A:Y.299, A:Y.299, A:Y.299, A:F.323 Hydrogen bonds: A:A.110, A:A.480, A:N.482 Water bridges: A:H.109, A:R.127, A:H.357 Salt bridges: A:K.86, A:H.109, A:R.127, A:H.357 pi-Stacking: A:H.357 Metal complexes: H2O.20 HEC.2: 18 residues within 4Å: Chain A: C.62, H.66, Q.69, F.70, L.221, N.222, C.223, C.226, H.227, A.286, M.291, M.380, K.382, Y.391, T.392, H.394 Ligands: HEC.3, HEC.7 11 PLIP interactions: 11 interactions with chain A, Hydrophobic interactions: A:H.66, A:Q.69, A:Q.69, A:L.221, A:A.286 Hydrogen bonds: A:Q.69, A:T.392, A:T.392 Salt bridges: A:K.382 Metal complexes: A:H.227, A:H.394 HEC.3: 26 residues within 4Å: Chain A: R.77, S.80, P.112, R.113, S.114, H.115, F.117, M.118, D.121, C.183, K.184, L.221, M.225, M.291, C.292, C.295, H.296, C.375, H.379, M.380, Q.396, R.397 Ligands: HEC.1, HEC.2, HEC.4, CA.11 15 PLIP interactions: 15 interactions with chain A, Hydrophobic interactions: A:P.112, A:H.379, A:Q.396 Hydrogen bonds: A:S.80, A:R.113, A:R.113, A:F.117, A:D.121 Water bridges: A:R.77, A:R.77, A:R.77, A:R.77, A:H.122 Metal complexes: A:H.115, A:H.296 HEC.4: 25 residues within 4Å: Chain A: N.289, C.292, H.296, E.359, A.360, F.363, H.368, V.373, A.374, C.375, C.378, H.379, T.398, P.399, R.400, I.423, K.427, N.482, S.483, F.486, H.487 Ligands: HEC.3, HEC.5, CA.11, GOL.13 20 PLIP interactions: 20 interactions with chain A, Hydrophobic interactions: A:H.296, A:E.359, A:E.359, A:F.363, A:V.373, A:P.399, A:I.423, A:N.482, A:F.486, A:F.486 Hydrogen bonds: A:T.398, A:T.398 Water bridges: A:R.77, A:R.77, A:K.427, A:N.482 Salt bridges: A:R.400, A:K.427 Metal complexes: A:H.379, A:H.487 HEC.5: 15 residues within 4Å: Chain A: V.367, H.368, P.399, A.406, C.407, C.410, H.411, W.414, A.419, I.423, F.486 Chain C: N.137, W.138, Q.139 Ligands: HEC.4 11 PLIP interactions: 7 interactions with chain A, 4 interactions with chain C, Hydrophobic interactions: A:P.399, A:W.414, A:W.414, A:I.423, A:F.486, C:W.138, C:Q.139 Metal complexes: A:H.368, A:H.411 Hydrogen bonds: C:W.138 Water bridges: C:Q.139 HEC.6: 23 residues within 4Å: Chain A: A.7, C.10, F.11, H.14, I.17, H.21, V.29, N.30, C.31, C.34, H.35, T.55, I.189, L.190, F.224, P.229, H.230, R.235, F.270, R.272, R.278 Ligands: HEC.7, HEC.8 18 PLIP interactions: 18 interactions with chain A, Hydrophobic interactions: A:A.7, A:F.11, A:I.17, A:I.17, A:V.29, A:T.55, A:I.189, A:L.190, A:F.224, A:P.229, A:F.270 Water bridges: A:R.278 Salt bridges: A:R.235, A:R.272, A:R.278, A:R.278 Metal complexes: A:H.35, A:H.230 HEC.7: 17 residues within 4Å: Chain A: K.25, H.26, V.29, H.33, A.61, C.62, T.64, C.65, H.66, C.223, H.227, A.232 Chain B: H.33, T.64, C.65 Ligands: HEC.2, HEC.6 12 PLIP interactions: 11 interactions with chain A, 1 interactions with chain B, Hydrophobic interactions: A:K.25, A:V.29, A:V.29, A:T.64, A:H.227 Hydrogen bonds: A:A.232 Water bridges: A:K.25, B:T.64 Salt bridges: A:K.25, A:K.25 Metal complexes: A:H.26, A:H.66 HEC.8: 22 residues within 4Å: Chain A: V.5, Q.9, C.10, C.13, H.14, C.31, H.35, A.37, H.40, V.41, A.44, S.45, S.46, R.48, M.49, R.52, P.53, T.55, L.190, R.272, G.273 Ligands: HEC.6 15 PLIP interactions: 15 interactions with chain A, Hydrophobic interactions: A:V.5, A:A.37, A:V.41, A:A.44, A:M.49, A:P.53 Hydrogen bonds: A:G.273 Water bridges: A:R.272, A:R.272, A:R.272 Salt bridges: A:R.52, A:R.272, A:R.272 Metal complexes: A:H.14, A:H.40 HEC.19: 24 residues within 4Å: Chain B: H.109, A.110, P.112, D.121, H.122, V.125, R.127, A.128, A.175, C.180, C.183, K.184, R.238, C.295, H.296, V.297, Y.299, C.301, F.323, H.357, A.480, N.482 Ligands: HEC.21, NO2.27 23 PLIP interactions: 22 interactions with chain B, 1 Ligand-Water interactions Hydrophobic interactions: B:P.112, B:P.112, B:V.125, B:A.128, B:V.297, B:Y.299, B:Y.299, B:Y.299, B:F.323, B:H.357 Hydrogen bonds: B:A.110, B:A.480, B:N.482 Water bridges: B:H.109, B:A.110, B:R.127, B:H.357 Salt bridges: B:K.86, B:H.109, B:R.127, B:H.357 pi-Stacking: B:H.357 Metal complexes: H2O.45 HEC.20: 17 residues within 4Å: Chain B: C.62, H.66, Q.69, F.70, L.221, N.222, C.223, C.226, H.227, A.286, M.291, M.380, Y.391, T.392, H.394 Ligands: HEC.21, HEC.25 10 PLIP interactions: 10 interactions with chain B, Hydrophobic interactions: B:H.66, B:Q.69, B:Q.69, B:L.221, B:A.286 Hydrogen bonds: B:Q.69, B:T.392 Salt bridges: B:K.382 Metal complexes: B:H.227, B:H.394 HEC.21: 26 residues within 4Å: Chain B: R.77, S.80, P.112, R.113, S.114, H.115, F.117, M.118, D.121, C.183, K.184, L.221, M.225, M.291, C.292, C.295, H.296, C.375, H.379, M.380, Q.396, R.397 Ligands: HEC.19, HEC.20, HEC.22, CA.29 13 PLIP interactions: 13 interactions with chain B, Hydrophobic interactions: B:P.112, B:K.184, B:H.379, B:Q.396, B:Q.396 Hydrogen bonds: B:S.80, B:F.117 Water bridges: B:R.77, B:R.77, B:H.122, B:Q.396 Metal complexes: B:H.115, B:H.296 HEC.22: 25 residues within 4Å: Chain B: N.289, C.292, H.296, E.359, A.360, F.363, H.368, V.373, A.374, C.375, C.378, H.379, T.398, P.399, R.400, I.423, K.427, N.482, S.483, F.486, H.487 Ligands: HEC.21, HEC.23, CA.29, GOL.31 19 PLIP interactions: 19 interactions with chain B, Hydrophobic interactions: B:H.296, B:E.359, B:E.359, B:F.363, B:V.373, B:P.399, B:I.423, B:N.482, B:F.486, B:F.486 Hydrogen bonds: B:T.398 Water bridges: B:R.77, B:S.80, B:K.427, B:K.427 Salt bridges: B:R.400, B:K.427 Metal complexes: B:H.379, B:H.487 HEC.23: 18 residues within 4Å: Chain B: V.367, H.368, N.371, V.373, C.378, P.399, A.406, C.407, C.410, H.411, W.414, A.419, I.423, F.486 Chain F: N.137, W.138, Q.139 Ligands: HEC.22 11 PLIP interactions: 8 interactions with chain B, 3 interactions with chain F, Hydrophobic interactions: B:V.367, B:V.373, B:P.399, B:W.414, B:I.423, B:F.486, F:W.138, F:Q.139 Metal complexes: B:H.368, B:H.411 Hydrogen bonds: F:W.138 HEC.24: 24 residues within 4Å: Chain B: A.7, C.10, F.11, H.14, I.17, H.21, V.29, N.30, C.31, C.34, H.35, T.55, R.56, I.189, L.190, F.224, P.229, H.230, R.235, F.270, R.272, R.278 Ligands: HEC.25, HEC.26 18 PLIP interactions: 18 interactions with chain B, Hydrophobic interactions: B:A.7, B:F.11, B:I.17, B:I.17, B:V.29, B:T.55, B:I.189, B:L.190, B:F.224, B:P.229, B:F.270 Water bridges: B:R.278 Salt bridges: B:R.235, B:R.272, B:R.278, B:R.278 Metal complexes: B:H.35, B:H.230 HEC.25: 16 residues within 4Å: Chain A: H.33, T.64, C.65 Chain B: K.25, H.26, V.29, H.33, A.61, C.62, C.65, H.66, C.223, H.227, A.232 Ligands: HEC.20, HEC.24 9 PLIP interactions: 9 interactions with chain B, Hydrophobic interactions: B:K.25, B:K.25, B:V.29, B:H.227, B:A.232 Salt bridges: B:K.25, B:K.25 Metal complexes: B:H.26, B:H.66 HEC.26: 22 residues within 4Å: Chain B: Q.9, C.10, C.13, H.14, C.31, H.35, A.37, H.40, V.41, A.44, S.45, S.46, R.47, R.48, M.49, R.52, P.53, T.55, L.190, Q.271, R.272 Ligands: HEC.24 12 PLIP interactions: 12 interactions with chain B, Hydrophobic interactions: B:A.37, B:V.41, B:M.49, B:P.53 Water bridges: B:H.14, B:Q.271, B:R.272, B:R.272 Salt bridges: B:R.52, B:R.272 Metal complexes: B:H.14, B:H.40 HEC.36: 24 residues within 4Å: Chain C: H.109, A.110, P.112, D.121, H.122, V.125, R.127, A.128, A.175, C.180, C.183, K.184, R.238, C.295, H.296, V.297, Y.299, C.301, F.323, H.357, A.480, N.482 Ligands: HEC.38, NO2.44 20 PLIP interactions: 19 interactions with chain C, 1 Ligand-Water interactions Hydrophobic interactions: C:P.112, C:P.112, C:V.125, C:A.128, C:V.297, C:Y.299, C:Y.299, C:Y.299, C:F.323 Hydrogen bonds: C:A.110, C:A.480, C:N.482 Water bridges: C:R.127, C:H.357 Salt bridges: C:K.86, C:H.109, C:R.127, C:H.357 pi-Stacking: C:H.357 Metal complexes: H2O.69 HEC.37: 18 residues within 4Å: Chain C: C.62, H.66, Q.69, F.70, L.221, N.222, C.223, C.226, H.227, A.286, M.291, M.380, K.382, Y.391, T.392, H.394 Ligands: HEC.38, HEC.42 11 PLIP interactions: 11 interactions with chain C, Hydrophobic interactions: C:H.66, C:Q.69, C:Q.69, C:L.221, C:A.286 Hydrogen bonds: C:Q.69, C:T.392, C:T.392 Salt bridges: C:K.382 Metal complexes: C:H.227, C:H.394 HEC.38: 26 residues within 4Å: Chain C: R.77, S.80, P.112, R.113, S.114, H.115, F.117, M.118, D.121, C.183, K.184, L.221, M.225, M.291, C.292, C.295, H.296, C.375, H.379, M.380, Q.396, R.397 Ligands: HEC.36, HEC.37, HEC.39, CA.46 14 PLIP interactions: 14 interactions with chain C, Hydrophobic interactions: C:P.112, C:H.379, C:Q.396 Hydrogen bonds: C:S.80, C:P.112, C:R.113, C:F.117 Water bridges: C:R.77, C:R.77, C:R.77, C:R.77, C:H.122 Metal complexes: C:H.115, C:H.296 HEC.39: 25 residues within 4Å: Chain C: N.289, C.292, H.296, E.359, A.360, F.363, H.368, V.373, A.374, C.375, C.378, H.379, T.398, P.399, R.400, I.423, K.427, N.482, S.483, F.486, H.487 Ligands: HEC.38, HEC.40, CA.46, GOL.48 20 PLIP interactions: 20 interactions with chain C, Hydrophobic interactions: C:H.296, C:E.359, C:E.359, C:F.363, C:V.373, C:P.399, C:I.423, C:N.482, C:F.486, C:F.486 Hydrogen bonds: C:T.398, C:T.398 Water bridges: C:R.77, C:R.77, C:K.427, C:N.482 Salt bridges: C:R.400, C:K.427 Metal complexes: C:H.379, C:H.487 HEC.40: 15 residues within 4Å: Chain C: V.367, H.368, P.399, A.406, C.407, C.410, H.411, W.414, A.419, I.423, F.486 Chain E: N.137, W.138, Q.139 Ligands: HEC.39 11 PLIP interactions: 7 interactions with chain C, 4 interactions with chain E, Hydrophobic interactions: C:P.399, C:W.414, C:W.414, C:I.423, C:F.486, E:W.138, E:Q.139 Metal complexes: C:H.368, C:H.411 Hydrogen bonds: E:W.138 Water bridges: E:Q.139 HEC.41: 23 residues within 4Å: Chain C: A.7, C.10, F.11, H.14, I.17, H.21, V.29, N.30, C.31, C.34, H.35, T.55, I.189, L.190, F.224, P.229, H.230, R.235, F.270, R.272, R.278 Ligands: HEC.42, HEC.43 18 PLIP interactions: 18 interactions with chain C, Hydrophobic interactions: C:A.7, C:F.11, C:I.17, C:I.17, C:V.29, C:T.55, C:I.189, C:L.190, C:F.224, C:P.229, C:F.270 Water bridges: C:R.278 Salt bridges: C:R.235, C:R.272, C:R.278, C:R.278 Metal complexes: C:H.35, C:H.230 HEC.42: 17 residues within 4Å: Chain C: K.25, H.26, V.29, H.33, A.61, C.62, T.64, C.65, H.66, C.223, H.227, A.232 Chain D: H.33, T.64, C.65 Ligands: HEC.37, HEC.41 12 PLIP interactions: 11 interactions with chain C, 1 interactions with chain D, Hydrophobic interactions: C:K.25, C:V.29, C:V.29, C:T.64, C:H.227 Hydrogen bonds: C:A.232 Water bridges: C:K.25, D:T.64 Salt bridges: C:K.25, C:K.25 Metal complexes: C:H.26, C:H.66 HEC.43: 22 residues within 4Å: Chain C: V.5, Q.9, C.10, C.13, H.14, C.31, H.35, A.37, H.40, V.41, A.44, S.45, S.46, R.48, M.49, R.52, P.53, T.55, L.190, R.272, G.273 Ligands: HEC.41 15 PLIP interactions: 15 interactions with chain C, Hydrophobic interactions: C:V.5, C:A.37, C:V.41, C:A.44, C:M.49, C:P.53 Hydrogen bonds: C:G.273 Water bridges: C:R.272, C:R.272, C:R.272 Salt bridges: C:R.52, C:R.272, C:R.272 Metal complexes: C:H.14, C:H.40 HEC.54: 24 residues within 4Å: Chain D: H.109, A.110, P.112, D.121, H.122, V.125, R.127, A.128, A.175, C.180, C.183, K.184, R.238, C.295, H.296, V.297, Y.299, C.301, F.323, H.357, A.480, N.482 Ligands: HEC.56, NO2.62 23 PLIP interactions: 22 interactions with chain D, 1 Ligand-Water interactions Hydrophobic interactions: D:P.112, D:P.112, D:V.125, D:A.128, D:V.297, D:Y.299, D:Y.299, D:Y.299, D:F.323, D:H.357 Hydrogen bonds: D:A.110, D:A.480, D:N.482 Water bridges: D:H.109, D:A.110, D:R.127, D:H.357 Salt bridges: D:K.86, D:H.109, D:R.127, D:H.357 pi-Stacking: D:H.357 Metal complexes: H2O.94 HEC.55: 17 residues within 4Å: Chain D: C.62, H.66, Q.69, F.70, L.221, N.222, C.223, C.226, H.227, A.286, M.291, M.380, Y.391, T.392, H.394 Ligands: HEC.56, HEC.60 10 PLIP interactions: 10 interactions with chain D, Hydrophobic interactions: D:H.66, D:Q.69, D:Q.69, D:L.221, D:A.286 Hydrogen bonds: D:Q.69, D:T.392 Salt bridges: D:K.382 Metal complexes: D:H.227, D:H.394 HEC.56: 26 residues within 4Å: Chain D: R.77, S.80, P.112, R.113, S.114, H.115, F.117, M.118, D.121, C.183, K.184, L.221, M.225, M.291, C.292, C.295, H.296, C.375, H.379, M.380, Q.396, R.397 Ligands: HEC.54, HEC.55, HEC.57, CA.64 15 PLIP interactions: 15 interactions with chain D, Hydrophobic interactions: D:P.112, D:K.184, D:H.379, D:Q.396, D:Q.396 Hydrogen bonds: D:S.80, D:R.113, D:F.117, D:D.121 Water bridges: D:R.77, D:R.77, D:H.122, D:Q.396 Metal complexes: D:H.115, D:H.296 HEC.57: 25 residues within 4Å: Chain D: N.289, C.292, H.296, E.359, A.360, F.363, H.368, V.373, A.374, C.375, C.378, H.379, T.398, P.399, R.400, I.423, K.427, N.482, S.483, F.486, H.487 Ligands: HEC.56, HEC.58, CA.64, GOL.66 20 PLIP interactions: 20 interactions with chain D, Hydrophobic interactions: D:H.296, D:E.359, D:E.359, D:F.363, D:V.373, D:P.399, D:I.423, D:N.482, D:F.486, D:F.486 Hydrogen bonds: D:T.398, D:T.398 Water bridges: D:R.77, D:S.80, D:K.427, D:K.427 Salt bridges: D:R.400, D:K.427 Metal complexes: D:H.379, D:H.487 HEC.58: 18 residues within 4Å: Chain B: N.137, W.138, Q.139 Chain D: V.367, H.368, N.371, V.373, C.378, P.399, A.406, C.407, C.410, H.411, W.414, A.419, I.423, F.486 Ligands: HEC.57 11 PLIP interactions: 8 interactions with chain D, 3 interactions with chain B, Hydrophobic interactions: D:V.367, D:V.373, D:P.399, D:W.414, D:I.423, D:F.486, B:W.138, B:Q.139 Metal complexes: D:H.368, D:H.411 Hydrogen bonds: B:W.138 HEC.59: 24 residues within 4Å: Chain D: A.7, C.10, F.11, H.14, I.17, H.21, V.29, N.30, C.31, C.34, H.35, T.55, R.56, I.189, L.190, F.224, P.229, H.230, R.235, F.270, R.272, R.278 Ligands: HEC.60, HEC.61 18 PLIP interactions: 18 interactions with chain D, Hydrophobic interactions: D:A.7, D:F.11, D:I.17, D:I.17, D:V.29, D:T.55, D:I.189, D:L.190, D:F.224, D:P.229, D:F.270 Water bridges: D:R.278 Salt bridges: D:R.235, D:R.272, D:R.278, D:R.278 Metal complexes: D:H.35, D:H.230 HEC.60: 16 residues within 4Å: Chain C: H.33, T.64, C.65 Chain D: K.25, H.26, V.29, H.33, A.61, C.62, C.65, H.66, C.223, H.227, A.232 Ligands: HEC.55, HEC.59 9 PLIP interactions: 9 interactions with chain D, Hydrophobic interactions: D:K.25, D:K.25, D:V.29, D:H.227, D:A.232 Salt bridges: D:K.25, D:K.25 Metal complexes: D:H.26, D:H.66 HEC.61: 22 residues within 4Å: Chain D: Q.9, C.10, C.13, H.14, C.31, H.35, A.37, H.40, V.41, A.44, S.45, S.46, R.47, R.48, M.49, R.52, P.53, T.55, L.190, Q.271, R.272 Ligands: HEC.59 12 PLIP interactions: 12 interactions with chain D, Hydrophobic interactions: D:A.37, D:V.41, D:M.49, D:P.53 Water bridges: D:H.14, D:Q.271, D:R.272, D:R.272 Salt bridges: D:R.52, D:R.272 Metal complexes: D:H.14, D:H.40 HEC.71: 24 residues within 4Å: Chain E: H.109, A.110, P.112, D.121, H.122, V.125, R.127, A.128, A.175, C.180, C.183, K.184, R.238, C.295, H.296, V.297, Y.299, C.301, F.323, H.357, A.480, N.482 Ligands: HEC.73, NO2.79 21 PLIP interactions: 20 interactions with chain E, 1 Ligand-Water interactions Hydrophobic interactions: E:P.112, E:P.112, E:V.125, E:A.128, E:V.297, E:Y.299, E:Y.299, E:Y.299, E:F.323 Hydrogen bonds: E:A.110, E:A.480, E:N.482 Water bridges: E:H.109, E:R.127, E:H.357 Salt bridges: E:K.86, E:H.109, E:R.127, E:H.357 pi-Stacking: E:H.357 Metal complexes: H2O.118 HEC.72: 18 residues within 4Å: Chain E: C.62, H.66, Q.69, F.70, L.221, N.222, C.223, C.226, H.227, A.286, M.291, M.380, K.382, Y.391, T.392, H.394 Ligands: HEC.73, HEC.77 11 PLIP interactions: 11 interactions with chain E, Hydrophobic interactions: E:H.66, E:Q.69, E:Q.69, E:L.221, E:A.286 Hydrogen bonds: E:Q.69, E:T.392, E:T.392 Salt bridges: E:K.382 Metal complexes: E:H.227, E:H.394 HEC.73: 26 residues within 4Å: Chain E: R.77, S.80, P.112, R.113, S.114, H.115, F.117, M.118, D.121, C.183, K.184, L.221, M.225, M.291, C.292, C.295, H.296, C.375, H.379, M.380, Q.396, R.397 Ligands: HEC.71, HEC.72, HEC.74, CA.81 14 PLIP interactions: 14 interactions with chain E, Hydrophobic interactions: E:P.112, E:H.379, E:Q.396 Hydrogen bonds: E:S.80, E:P.112, E:R.113, E:F.117 Water bridges: E:R.77, E:R.77, E:R.77, E:R.77, E:H.122 Metal complexes: E:H.115, E:H.296 HEC.74: 25 residues within 4Å: Chain E: N.289, C.292, H.296, E.359, A.360, F.363, H.368, V.373, A.374, C.375, C.378, H.379, T.398, P.399, R.400, I.423, K.427, N.482, S.483, F.486, H.487 Ligands: HEC.73, HEC.75, CA.81, GOL.83 19 PLIP interactions: 19 interactions with chain E, Hydrophobic interactions: E:H.296, E:E.359, E:E.359, E:F.363, E:V.373, E:P.399, E:I.423, E:N.482, E:F.486, E:F.486 Hydrogen bonds: E:T.398 Water bridges: E:R.77, E:R.77, E:K.427, E:N.482 Salt bridges: E:R.400, E:K.427 Metal complexes: E:H.379, E:H.487 HEC.75: 15 residues within 4Å: Chain A: N.137, W.138, Q.139 Chain E: V.367, H.368, P.399, A.406, C.407, C.410, H.411, W.414, A.419, I.423, F.486 Ligands: HEC.74 11 PLIP interactions: 7 interactions with chain E, 4 interactions with chain A, Hydrophobic interactions: E:P.399, E:W.414, E:W.414, E:I.423, E:F.486, A:W.138, A:Q.139 Metal complexes: E:H.368, E:H.411 Hydrogen bonds: A:W.138 Water bridges: A:Q.139 HEC.76: 23 residues within 4Å: Chain E: A.7, C.10, F.11, H.14, I.17, H.21, V.29, N.30, C.31, C.34, H.35, T.55, I.189, L.190, F.224, P.229, H.230, R.235, F.270, R.272, R.278 Ligands: HEC.77, HEC.78 18 PLIP interactions: 18 interactions with chain E, Hydrophobic interactions: E:A.7, E:F.11, E:I.17, E:I.17, E:V.29, E:T.55, E:I.189, E:L.190, E:F.224, E:P.229, E:F.270 Water bridges: E:R.278 Salt bridges: E:R.235, E:R.272, E:R.278, E:R.278 Metal complexes: E:H.35, E:H.230 HEC.77: 17 residues within 4Å: Chain E: K.25, H.26, V.29, H.33, A.61, C.62, T.64, C.65, H.66, C.223, H.227, A.232 Chain F: H.33, T.64, C.65 Ligands: HEC.72, HEC.76 13 PLIP interactions: 11 interactions with chain E, 2 interactions with chain F, Hydrophobic interactions: E:K.25, E:V.29, E:V.29, E:T.64, E:H.227 Hydrogen bonds: E:A.232, F:T.64 Water bridges: E:K.25, F:T.64 Salt bridges: E:K.25, E:K.25 Metal complexes: E:H.26, E:H.66 HEC.78: 22 residues within 4Å: Chain E: V.5, Q.9, C.10, C.13, H.14, C.31, H.35, A.37, H.40, V.41, A.44, S.45, S.46, R.48, M.49, R.52, P.53, T.55, L.190, R.272, G.273 Ligands: HEC.76 15 PLIP interactions: 15 interactions with chain E, Hydrophobic interactions: E:V.5, E:A.37, E:V.41, E:A.44, E:M.49, E:P.53 Hydrogen bonds: E:G.273 Water bridges: E:R.272, E:R.272, E:R.272 Salt bridges: E:R.52, E:R.272, E:R.272 Metal complexes: E:H.14, E:H.40 HEC.89: 24 residues within 4Å: Chain F: H.109, A.110, P.112, D.121, H.122, V.125, R.127, A.128, A.175, C.180, C.183, K.184, R.238, C.295, H.296, V.297, Y.299, C.301, F.323, H.357, A.480, N.482 Ligands: HEC.91, NO2.97 24 PLIP interactions: 23 interactions with chain F, 1 Ligand-Water interactions Hydrophobic interactions: F:P.112, F:P.112, F:V.125, F:A.128, F:V.297, F:Y.299, F:Y.299, F:Y.299, F:F.323, F:H.357 Hydrogen bonds: F:A.110, F:A.480, F:N.482 Water bridges: F:H.109, F:H.109, F:H.109, F:R.127, F:H.357 Salt bridges: F:K.86, F:H.109, F:R.127, F:H.357 pi-Stacking: F:H.357 Metal complexes: H2O.143 HEC.90: 17 residues within 4Å: Chain F: C.62, H.66, Q.69, F.70, L.221, N.222, C.223, C.226, H.227, A.286, M.291, M.380, Y.391, T.392, H.394 Ligands: HEC.91, HEC.95 10 PLIP interactions: 10 interactions with chain F, Hydrophobic interactions: F:H.66, F:Q.69, F:Q.69, F:L.221, F:A.286 Hydrogen bonds: F:Q.69, F:T.392 Salt bridges: F:K.382 Metal complexes: F:H.227, F:H.394 HEC.91: 26 residues within 4Å: Chain F: R.77, S.80, P.112, R.113, S.114, H.115, F.117, M.118, D.121, C.183, K.184, L.221, M.225, M.291, C.292, C.295, H.296, C.375, H.379, M.380, Q.396, R.397 Ligands: HEC.89, HEC.90, HEC.92, CA.99 14 PLIP interactions: 14 interactions with chain F, Hydrophobic interactions: F:P.112, F:K.184, F:H.379, F:Q.396, F:Q.396 Hydrogen bonds: F:S.80, F:F.117, F:D.121 Water bridges: F:R.77, F:R.77, F:H.122, F:Q.396 Metal complexes: F:H.115, F:H.296 HEC.92: 25 residues within 4Å: Chain F: N.289, C.292, H.296, E.359, A.360, F.363, H.368, V.373, A.374, C.375, C.378, H.379, T.398, P.399, R.400, I.423, K.427, N.482, S.483, F.486, H.487 Ligands: HEC.91, HEC.93, CA.99, GOL.101 19 PLIP interactions: 19 interactions with chain F, Hydrophobic interactions: F:H.296, F:E.359, F:E.359, F:F.363, F:V.373, F:P.399, F:I.423, F:N.482, F:F.486, F:F.486 Hydrogen bonds: F:T.398 Water bridges: F:R.77, F:S.80, F:K.427, F:K.427 Salt bridges: F:R.400, F:K.427 Metal complexes: F:H.379, F:H.487 HEC.93: 18 residues within 4Å: Chain D: N.137, W.138, Q.139 Chain F: V.367, H.368, N.371, V.373, C.378, P.399, A.406, C.407, C.410, H.411, W.414, A.419, I.423, F.486 Ligands: HEC.92 11 PLIP interactions: 3 interactions with chain D, 8 interactions with chain F, Hydrophobic interactions: D:W.138, D:Q.139, F:V.367, F:V.373, F:P.399, F:W.414, F:I.423, F:F.486 Hydrogen bonds: D:W.138 Metal complexes: F:H.368, F:H.411 HEC.94: 24 residues within 4Å: Chain F: A.7, C.10, F.11, H.14, I.17, H.21, V.29, N.30, C.31, C.34, H.35, T.55, R.56, I.189, L.190, F.224, P.229, H.230, R.235, F.270, R.272, R.278 Ligands: HEC.95, HEC.96 18 PLIP interactions: 18 interactions with chain F, Hydrophobic interactions: F:A.7, F:F.11, F:I.17, F:I.17, F:V.29, F:T.55, F:I.189, F:L.190, F:F.224, F:P.229, F:F.270 Water bridges: F:R.278 Salt bridges: F:R.235, F:R.272, F:R.278, F:R.278 Metal complexes: F:H.35, F:H.230 HEC.95: 16 residues within 4Å: Chain E: H.33, T.64, C.65 Chain F: K.25, H.26, V.29, H.33, A.61, C.62, C.65, H.66, C.223, H.227, A.232 Ligands: HEC.90, HEC.94 10 PLIP interactions: 9 interactions with chain F, 1 interactions with chain E, Hydrophobic interactions: F:K.25, F:K.25, F:V.29, F:H.227, F:A.232 Salt bridges: F:K.25, F:K.25 Metal complexes: F:H.26, F:H.66 Water bridges: E:T.64 HEC.96: 22 residues within 4Å: Chain F: Q.9, C.10, C.13, H.14, C.31, H.35, A.37, H.40, V.41, A.44, S.45, S.46, R.47, R.48, M.49, R.52, P.53, T.55, L.190, Q.271, R.272 Ligands: HEC.94 12 PLIP interactions: 12 interactions with chain F, Hydrophobic interactions: F:A.37, F:V.41, F:M.49, F:P.53 Water bridges: F:H.14, F:Q.271, F:R.272, F:R.272 Salt bridges: F:R.52, F:R.272 Metal complexes: F:H.14, F:H.40

18 x NO2: NITRITE ION(Non-covalent)

NO2.9: 7 residues within 4Å: Chain A: F.105, R.127, K.184, Y.299, Q.356, H.357 Ligands: HEC.1 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:R.127, A:Y.299 Water bridges: A:R.127, A:Y.299 NO2.17: 5 residues within 4Å: Chain A: Q.165, S.208, E.209, V.210 Ligands: NO2.18 5 PLIP interactions: 5 interactions with chain A Water bridges: A:Q.165, A:Q.165, A:Q.165, A:A.176, A:S.208 NO2.18: 5 residues within 4Å: Chain A: Q.165, S.208, E.209, V.210 Ligands: NO2.17 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:V.210 Water bridges: A:Q.165, A:Q.165, A:Q.165 NO2.27: 6 residues within 4Å: Chain B: F.105, R.127, K.184, Y.299, H.357 Ligands: HEC.19 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:R.127, B:Y.299 NO2.34: 5 residues within 4Å: Chain B: Q.165, S.208, E.209, V.210 Ligands: NO2.35 1 PLIP interactions: 1 interactions with chain B Water bridges: B:Q.165 NO2.35: 5 residues within 4Å: Chain B: Q.165, S.208, E.209, V.210 Ligands: NO2.34 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:V.210 Water bridges: B:Q.165, B:Q.165, B:V.211 NO2.44: 7 residues within 4Å: Chain C: F.105, R.127, K.184, Y.299, Q.356, H.357 Ligands: HEC.36 3 PLIP interactions: 3 interactions with chain C Hydrogen bonds: C:R.127, C:Y.299 Water bridges: C:H.357 NO2.52: 5 residues within 4Å: Chain C: Q.165, S.208, E.209, V.210 Ligands: NO2.53 5 PLIP interactions: 5 interactions with chain C Water bridges: C:Q.165, C:Q.165, C:Q.165, C:A.176, C:S.208 NO2.53: 5 residues within 4Å: Chain C: Q.165, S.208, E.209, V.210 Ligands: NO2.52 4 PLIP interactions: 4 interactions with chain C Hydrogen bonds: C:V.210 Water bridges: C:Q.165, C:Q.165, C:Q.165 NO2.62: 6 residues within 4Å: Chain D: F.105, R.127, K.184, Y.299, H.357 Ligands: HEC.54 5 PLIP interactions: 5 interactions with chain D Hydrogen bonds: D:R.127, D:K.184, D:K.184, D:Y.299 Water bridges: D:H.357 NO2.69: 5 residues within 4Å: Chain D: Q.165, S.208, E.209, V.210 Ligands: NO2.70 1 PLIP interactions: 1 interactions with chain D Water bridges: D:Q.165 NO2.70: 5 residues within 4Å: Chain D: Q.165, S.208, E.209, V.210 Ligands: NO2.69 4 PLIP interactions: 4 interactions with chain D Hydrogen bonds: D:V.210 Water bridges: D:Q.165, D:Q.165, D:V.211 NO2.79: 7 residues within 4Å: Chain E: F.105, R.127, K.184, Y.299, Q.356, H.357 Ligands: HEC.71 5 PLIP interactions: 5 interactions with chain E Hydrogen bonds: E:R.127, E:K.184, E:Y.299 Water bridges: E:R.127, E:Y.299 NO2.87: 5 residues within 4Å: Chain E: Q.165, S.208, E.209, V.210 Ligands: NO2.88 5 PLIP interactions: 5 interactions with chain E Water bridges: E:Q.165, E:Q.165, E:Q.165, E:A.176, E:S.208 NO2.88: 5 residues within 4Å: Chain E: Q.165, S.208, E.209, V.210 Ligands: NO2.87 4 PLIP interactions: 4 interactions with chain E Hydrogen bonds: E:V.210 Water bridges: E:Q.165, E:Q.165, E:Q.165 NO2.97: 6 residues within 4Å: Chain F: F.105, R.127, K.184, Y.299, H.357 Ligands: HEC.89 6 PLIP interactions: 6 interactions with chain F Hydrogen bonds: F:R.127, F:K.184, F:K.184 Water bridges: F:H.109, F:Y.299, F:H.357 NO2.104: 5 residues within 4Å: Chain F: Q.165, S.208, E.209, V.210 Ligands: NO2.105 1 PLIP interactions: 1 interactions with chain F Water bridges: F:Q.165 NO2.105: 5 residues within 4Å: Chain F: Q.165, S.208, E.209, V.210 Ligands: NO2.104 4 PLIP interactions: 4 interactions with chain F Hydrogen bonds: F:V.210 Water bridges: F:Q.165, F:Q.165, F:V.211

12 x CA: CALCIUM ION(Non-covalent)

CA.10: 4 residues within 4Å: Chain A: E.298, Y.299, K.354, Q.356 5 PLIP interactions: 3 interactions with chain A, 2 Ligand-Water interactions Metal complexes: A:E.298, A:Y.299, A:K.354, H2O.7, H2O.11 CA.11: 4 residues within 4Å: Chain A: P.112 Ligands: HEC.3, HEC.4, GOL.13 4 PLIP interactions: 1 interactions with chain A, 3 Ligand-Water interactions Metal complexes: A:P.112, H2O.9, H2O.9, H2O.13 CA.28: 4 residues within 4Å: Chain B: E.298, Y.299, K.354, Q.356 5 PLIP interactions: 3 interactions with chain B, 2 Ligand-Water interactions Metal complexes: B:E.298, B:Y.299, B:K.354, H2O.32, H2O.36 CA.29: 4 residues within 4Å: Chain B: P.112 Ligands: HEC.21, HEC.22, GOL.31 4 PLIP interactions: 1 interactions with chain B, 3 Ligand-Water interactions Metal complexes: B:P.112, H2O.34, H2O.35, H2O.39 CA.45: 4 residues within 4Å: Chain C: E.298, Y.299, K.354, Q.356 5 PLIP interactions: 3 interactions with chain C, 2 Ligand-Water interactions Metal complexes: C:E.298, C:Y.299, C:K.354, H2O.56, H2O.59 CA.46: 4 residues within 4Å: Chain C: P.112 Ligands: HEC.38, HEC.39, GOL.48 4 PLIP interactions: 1 interactions with chain C, 3 Ligand-Water interactions Metal complexes: C:P.112, H2O.57, H2O.58, H2O.62 CA.63: 4 residues within 4Å: Chain D: E.298, Y.299, K.354, Q.356 5 PLIP interactions: 3 interactions with chain D, 2 Ligand-Water interactions Metal complexes: D:E.298, D:Y.299, D:K.354, H2O.81, H2O.85 CA.64: 4 residues within 4Å: Chain D: P.112 Ligands: HEC.56, HEC.57, GOL.66 4 PLIP interactions: 1 interactions with chain D, 3 Ligand-Water interactions Metal complexes: D:P.112, H2O.83, H2O.83, H2O.87 CA.80: 4 residues within 4Å: Chain E: E.298, Y.299, K.354, Q.356 5 PLIP interactions: 3 interactions with chain E, 2 Ligand-Water interactions Metal complexes: E:E.298, E:Y.299, E:K.354, H2O.105, H2O.108 CA.81: 4 residues within 4Å: Chain E: P.112 Ligands: HEC.73, HEC.74, GOL.83 4 PLIP interactions: 1 interactions with chain E, 3 Ligand-Water interactions Metal complexes: E:P.112, H2O.106, H2O.107, H2O.111 CA.98: 4 residues within 4Å: Chain F: E.298, Y.299, K.354, Q.356 5 PLIP interactions: 3 interactions with chain F, 2 Ligand-Water interactions Metal complexes: F:E.298, F:Y.299, F:K.354, H2O.130, H2O.134 CA.99: 4 residues within 4Å: Chain F: P.112 Ligands: HEC.91, HEC.92, GOL.101 4 PLIP interactions: 1 interactions with chain F, 3 Ligand-Water interactions Metal complexes: F:P.112, H2O.131, H2O.132, H2O.136

6 x MPD: (4S)-2-METHYL-2,4-PENTANEDIOL(Non-functional Binders)

MPD.12: 9 residues within 4Å: Chain A: R.83, V.124, Q.134, F.135, W.138, V.141 Chain E: Y.425, Y.429, R.493 13 PLIP interactions: 9 interactions with chain A, 4 interactions with chain E Hydrophobic interactions: A:F.135, A:W.138, A:W.138, A:W.138, A:W.138, A:V.141, E:Y.425, E:Y.429 Hydrogen bonds: A:R.83, A:R.83, A:F.135 Water bridges: E:R.493, E:R.493 MPD.30: 9 residues within 4Å: Chain B: R.83, V.124, Q.134, F.135, W.138, V.141 Chain D: Y.425, Y.429, R.493 11 PLIP interactions: 9 interactions with chain B, 2 interactions with chain D Hydrophobic interactions: B:F.135, B:W.138, B:W.138, B:W.138, B:W.138, B:V.141, D:Y.425, D:Y.429 Hydrogen bonds: B:R.83, B:R.83, B:F.135 MPD.47: 9 residues within 4Å: Chain A: Y.425, Y.429, R.493 Chain C: R.83, V.124, Q.134, F.135, W.138, V.141 13 PLIP interactions: 4 interactions with chain A, 9 interactions with chain C Hydrophobic interactions: A:Y.425, A:Y.429, C:F.135, C:W.138, C:W.138, C:W.138, C:W.138, C:V.141 Water bridges: A:R.493, A:R.493 Hydrogen bonds: C:R.83, C:R.83, C:F.135 MPD.65: 9 residues within 4Å: Chain D: R.83, V.124, Q.134, F.135, W.138, V.141 Chain F: Y.425, Y.429, R.493 11 PLIP interactions: 9 interactions with chain D, 2 interactions with chain F Hydrophobic interactions: D:F.135, D:W.138, D:W.138, D:W.138, D:W.138, D:V.141, F:Y.425, F:Y.429 Hydrogen bonds: D:R.83, D:R.83, D:F.135 MPD.82: 9 residues within 4Å: Chain C: Y.425, Y.429, R.493 Chain E: R.83, V.124, Q.134, F.135, W.138, V.141 13 PLIP interactions: 9 interactions with chain E, 4 interactions with chain C Hydrophobic interactions: E:F.135, E:W.138, E:W.138, E:W.138, E:W.138, E:V.141, C:Y.425, C:Y.429 Hydrogen bonds: E:R.83, E:R.83, E:F.135 Water bridges: C:R.493, C:R.493 MPD.100: 9 residues within 4Å: Chain B: Y.425, Y.429, R.493 Chain F: R.83, V.124, Q.134, F.135, W.138, V.141 11 PLIP interactions: 2 interactions with chain B, 9 interactions with chain F Hydrophobic interactions: B:Y.425, B:Y.429, F:F.135, F:W.138, F:W.138, F:W.138, F:W.138, F:V.141 Hydrogen bonds: F:R.83, F:R.83, F:F.135

15 x GOL: GLYCEROL(Non-functional Binders)

GOL.13: 6 residues within 4Å: Chain A: R.92, E.111, P.112, N.482 Ligands: HEC.4, CA.11 8 PLIP interactions: 8 interactions with chain A Hydrogen bonds: A:R.92, A:R.92, A:N.482 Water bridges: A:E.111, A:E.111, A:E.111, A:E.111, A:P.112 GOL.14: 7 residues within 4Å: Chain A: W.440, I.500, K.504 Chain C: D.97, A.106, F.107, Q.171 4 PLIP interactions: 3 interactions with chain C, 1 interactions with chain A Hydrogen bonds: C:D.97, C:Q.171, A:K.504 Water bridges: C:D.97 GOL.15: 5 residues within 4Å: Chain A: Y.194, N.243, D.247, K.267, R.318 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:N.243, A:K.267, A:R.318, A:R.318 Water bridges: A:K.267 GOL.31: 6 residues within 4Å: Chain B: R.92, E.111, P.112, N.482 Ligands: HEC.22, CA.29 7 PLIP interactions: 7 interactions with chain B Hydrogen bonds: B:R.92, B:E.111 Water bridges: B:E.111, B:E.111, B:E.111, B:E.111, B:P.112 GOL.32: 8 residues within 4Å: Chain B: D.97, A.106, F.107, Q.171 Chain D: K.436, W.440, I.500, K.504 2 PLIP interactions: 1 interactions with chain D, 1 interactions with chain B Hydrogen bonds: D:K.504, B:Q.171 GOL.48: 6 residues within 4Å: Chain C: R.92, E.111, P.112, N.482 Ligands: HEC.39, CA.46 8 PLIP interactions: 8 interactions with chain C Hydrogen bonds: C:R.92, C:R.92, C:N.482 Water bridges: C:E.111, C:E.111, C:E.111, C:E.111, C:P.112 GOL.49: 7 residues within 4Å: Chain C: W.440, I.500, K.504 Chain E: D.97, A.106, F.107, Q.171 3 PLIP interactions: 2 interactions with chain E, 1 interactions with chain C Hydrogen bonds: E:D.97, E:Q.171, C:K.504 GOL.50: 5 residues within 4Å: Chain C: Y.194, N.243, D.247, K.267, R.318 6 PLIP interactions: 6 interactions with chain C Hydrogen bonds: C:N.243, C:D.247, C:K.267, C:R.318, C:R.318 Water bridges: C:K.267 GOL.66: 6 residues within 4Å: Chain D: R.92, E.111, P.112, N.482 Ligands: HEC.57, CA.64 7 PLIP interactions: 7 interactions with chain D Hydrogen bonds: D:R.92, D:E.111 Water bridges: D:E.111, D:E.111, D:E.111, D:E.111, D:P.112 GOL.67: 8 residues within 4Å: Chain D: D.97, A.106, F.107, Q.171 Chain F: K.436, W.440, I.500, K.504 3 PLIP interactions: 1 interactions with chain F, 2 interactions with chain D Hydrogen bonds: F:K.504, D:Q.171 Water bridges: D:D.97 GOL.83: 6 residues within 4Å: Chain E: R.92, E.111, P.112, N.482 Ligands: HEC.74, CA.81 8 PLIP interactions: 8 interactions with chain E Hydrogen bonds: E:R.92, E:R.92, E:N.482 Water bridges: E:E.111, E:E.111, E:E.111, E:E.111, E:P.112 GOL.84: 7 residues within 4Å: Chain A: D.97, A.106, F.107, Q.171 Chain E: W.440, I.500, K.504 4 PLIP interactions: 3 interactions with chain A, 1 interactions with chain E Hydrogen bonds: A:D.97, A:Q.171, E:K.504 Water bridges: A:D.97 GOL.85: 5 residues within 4Å: Chain E: Y.194, N.243, D.247, K.267, R.318 6 PLIP interactions: 6 interactions with chain E Hydrogen bonds: E:N.243, E:D.247, E:K.267, E:R.318, E:R.318 Water bridges: E:K.267 GOL.101: 6 residues within 4Å: Chain F: R.92, E.111, P.112, N.482 Ligands: HEC.92, CA.99 7 PLIP interactions: 7 interactions with chain F Hydrogen bonds: F:R.92, F:E.111 Water bridges: F:E.111, F:E.111, F:E.111, F:E.111, F:P.112 GOL.102: 8 residues within 4Å: Chain B: K.436, W.440, I.500, K.504 Chain F: D.97, A.106, F.107, Q.171 2 PLIP interactions: 1 interactions with chain F, 1 interactions with chain B Hydrogen bonds: F:Q.171, B:K.504

6 x SO4: SULFATE ION(Non-functional Binders)

SO4.16: 4 residues within 4Å: Chain A: K.443, N.511 Chain C: A.346, T.347 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:N.511 Salt bridges: A:K.443 SO4.33: 4 residues within 4Å: Chain B: K.443, N.511 Chain F: A.346, T.347 5 PLIP interactions: 4 interactions with chain B, 1 interactions with chain F Hydrogen bonds: B:N.511, F:A.346 Water bridges: B:N.511, B:N.511 Salt bridges: B:K.443 SO4.51: 4 residues within 4Å: Chain C: K.443, N.511 Chain E: A.346, T.347 2 PLIP interactions: 2 interactions with chain C Hydrogen bonds: C:N.511 Salt bridges: C:K.443 SO4.68: 4 residues within 4Å: Chain B: A.346, T.347 Chain D: K.443, N.511 5 PLIP interactions: 4 interactions with chain D, 1 interactions with chain B Hydrogen bonds: D:N.511, B:A.346 Water bridges: D:N.511, D:N.511 Salt bridges: D:K.443 SO4.86: 4 residues within 4Å: Chain A: A.346, T.347 Chain E: K.443, N.511 2 PLIP interactions: 2 interactions with chain E Hydrogen bonds: E:N.511 Salt bridges: E:K.443 SO4.103: 4 residues within 4Å: Chain D: A.346, T.347 Chain F: K.443, N.511 5 PLIP interactions: 4 interactions with chain F, 1 interactions with chain D Hydrogen bonds: F:N.511, D:A.346 Water bridges: F:N.511, F:N.511 Salt bridges: F:K.443

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Trofimov, A.A. et al., Investigation of the X-ray-induced nitrite reduction catalysed by cytochrome c nitrite reductase from the bacterium Thioalkalivibrio nitratireducens. To be Published

Release Date

2014-06-11

Peptides

Eight-heme nitrite reductase: ABCDEF

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
A

D
B

E
A

F
B

Eight-heme nitrite reductase

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