SMTL ID : 4jtd.1 (1 other biounit)

Crystal structure of Kv1.2-2.1 paddle chimera channel in complex with Lys27Met mutant of Charybdotoxin

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.54 Å

Oligo State

hetero-4-4-mer

Ligands

4 x NAP: NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE(Non-covalent)

NAP.1: 31 residues within 4Å: Chain A: G.21, T.22, W.23, Q.29, D.51, Y.56, K.84, N.124, S.154, R.155, Q.180, W.209, S.210, P.211, L.212, A.213, C.214, G.215, K.220, Y.228, S.229, R.230, P.270, L.287, L.288, G.289, A.290, S.291, Q.295, E.298, N.299 34 PLIP interactions: 34 interactions with chain A Hydrophobic interactions: A:W.23, A:W.209 Hydrogen bonds: A:T.22, A:W.23, A:Q.29, A:D.51, A:D.51, A:Y.56, A:S.154, A:S.154, A:R.155, A:S.210, A:L.212, A:C.214, A:K.220, A:R.230, A:R.230, A:R.230, A:L.288, A:G.289, A:S.291, A:S.291, A:Q.295, A:N.299, A:N.299 Water bridges: A:K.84, A:N.124, A:K.220, A:Y.228, A:G.289 Salt bridges: A:K.220, A:R.230, A:R.230 pi-Stacking: A:W.209 NAP.22: 31 residues within 4Å: Chain C: G.21, T.22, W.23, Q.29, D.51, Y.56, K.84, N.124, S.154, R.155, Q.180, W.209, S.210, P.211, L.212, A.213, C.214, G.215, K.220, Y.228, S.229, R.230, P.270, L.287, L.288, G.289, A.290, S.291, Q.295, E.298, N.299 34 PLIP interactions: 34 interactions with chain C Hydrophobic interactions: C:W.23, C:W.209 Hydrogen bonds: C:T.22, C:W.23, C:Q.29, C:D.51, C:D.51, C:Y.56, C:S.154, C:S.154, C:R.155, C:S.210, C:L.212, C:C.214, C:K.220, C:R.230, C:R.230, C:R.230, C:L.288, C:G.289, C:S.291, C:S.291, C:Q.295, C:N.299, C:N.299 Water bridges: C:K.84, C:N.124, C:K.220, C:Y.228, C:G.289 Salt bridges: C:K.220, C:R.230, C:R.230 pi-Stacking: C:W.209 NAP.43: 31 residues within 4Å: Chain E: G.21, T.22, W.23, Q.29, D.51, Y.56, K.84, N.124, S.154, R.155, Q.180, W.209, S.210, P.211, L.212, A.213, C.214, G.215, K.220, Y.228, S.229, R.230, P.270, L.287, L.288, G.289, A.290, S.291, Q.295, E.298, N.299 34 PLIP interactions: 34 interactions with chain E Hydrophobic interactions: E:W.23, E:W.209 Hydrogen bonds: E:T.22, E:W.23, E:Q.29, E:D.51, E:D.51, E:Y.56, E:S.154, E:S.154, E:R.155, E:S.210, E:L.212, E:C.214, E:K.220, E:R.230, E:R.230, E:R.230, E:L.288, E:G.289, E:S.291, E:S.291, E:Q.295, E:N.299, E:N.299 Water bridges: E:K.84, E:N.124, E:K.220, E:Y.228, E:G.289 Salt bridges: E:K.220, E:R.230, E:R.230 pi-Stacking: E:W.209 NAP.64: 31 residues within 4Å: Chain G: G.21, T.22, W.23, Q.29, D.51, Y.56, K.84, N.124, S.154, R.155, Q.180, W.209, S.210, P.211, L.212, A.213, C.214, G.215, K.220, Y.228, S.229, R.230, P.270, L.287, L.288, G.289, A.290, S.291, Q.295, E.298, N.299 34 PLIP interactions: 34 interactions with chain G Hydrophobic interactions: G:W.23, G:W.209 Hydrogen bonds: G:T.22, G:W.23, G:Q.29, G:D.51, G:D.51, G:Y.56, G:S.154, G:S.154, G:R.155, G:S.210, G:L.212, G:C.214, G:K.220, G:R.230, G:R.230, G:R.230, G:L.288, G:G.289, G:S.291, G:S.291, G:Q.295, G:N.299, G:N.299 Water bridges: G:K.84, G:N.124, G:K.220, G:Y.228, G:G.289 Salt bridges: G:K.220, G:R.230, G:R.230 pi-Stacking: G:W.209

16 x K: POTASSIUM ION(Non-covalent)

K.2: 15 residues within 4Å: Chain B: G.391, Y.392 Chain D: G.391, Y.392 Chain F: G.391, Y.392 Chain H: G.391, Y.392 Ligands: K.3, K.23, K.24, K.44, K.45, K.65, K.66 Ligand excluded by PLIP K.3: 19 residues within 4Å: Chain B: V.390, G.391 Chain D: V.390, G.391 Chain F: V.390, G.391 Chain H: V.390, G.391 Ligands: K.2, K.4, K.23, K.24, K.25, K.44, K.45, K.46, K.65, K.66, K.67 Ligand excluded by PLIP K.4: 19 residues within 4Å: Chain B: T.389, V.390 Chain D: T.389, V.390 Chain F: T.389, V.390 Chain H: T.389, V.390 Ligands: K.3, K.5, K.24, K.25, K.26, K.45, K.46, K.47, K.66, K.67, K.68 Ligand excluded by PLIP K.5: 11 residues within 4Å: Chain B: T.389 Chain D: T.389 Chain F: T.389 Chain H: T.389 Ligands: K.4, K.25, K.26, K.46, K.47, K.67, K.68 Ligand excluded by PLIP K.23: 15 residues within 4Å: Chain B: G.391, Y.392 Chain D: G.391, Y.392 Chain F: G.391, Y.392 Chain H: G.391, Y.392 Ligands: K.2, K.3, K.24, K.44, K.45, K.65, K.66 Ligand excluded by PLIP K.24: 19 residues within 4Å: Chain B: V.390, G.391 Chain D: V.390, G.391 Chain F: V.390, G.391 Chain H: V.390, G.391 Ligands: K.2, K.3, K.4, K.23, K.25, K.44, K.45, K.46, K.65, K.66, K.67 Ligand excluded by PLIP K.25: 19 residues within 4Å: Chain B: T.389, V.390 Chain D: T.389, V.390 Chain F: T.389, V.390 Chain H: T.389, V.390 Ligands: K.3, K.4, K.5, K.24, K.26, K.45, K.46, K.47, K.66, K.67, K.68 Ligand excluded by PLIP K.26: 11 residues within 4Å: Chain B: T.389 Chain D: T.389 Chain F: T.389 Chain H: T.389 Ligands: K.4, K.5, K.25, K.46, K.47, K.67, K.68 Ligand excluded by PLIP K.44: 15 residues within 4Å: Chain B: G.391, Y.392 Chain D: G.391, Y.392 Chain F: G.391, Y.392 Chain H: G.391, Y.392 Ligands: K.2, K.3, K.23, K.24, K.45, K.65, K.66 Ligand excluded by PLIP K.45: 19 residues within 4Å: Chain B: V.390, G.391 Chain D: V.390, G.391 Chain F: V.390, G.391 Chain H: V.390, G.391 Ligands: K.2, K.3, K.4, K.23, K.24, K.25, K.44, K.46, K.65, K.66, K.67 Ligand excluded by PLIP K.46: 19 residues within 4Å: Chain B: T.389, V.390 Chain D: T.389, V.390 Chain F: T.389, V.390 Chain H: T.389, V.390 Ligands: K.3, K.4, K.5, K.24, K.25, K.26, K.45, K.47, K.66, K.67, K.68 Ligand excluded by PLIP K.47: 11 residues within 4Å: Chain B: T.389 Chain D: T.389 Chain F: T.389 Chain H: T.389 Ligands: K.4, K.5, K.25, K.26, K.46, K.67, K.68 Ligand excluded by PLIP K.65: 15 residues within 4Å: Chain B: G.391, Y.392 Chain D: G.391, Y.392 Chain F: G.391, Y.392 Chain H: G.391, Y.392 Ligands: K.2, K.3, K.23, K.24, K.44, K.45, K.66 Ligand excluded by PLIP K.66: 19 residues within 4Å: Chain B: V.390, G.391 Chain D: V.390, G.391 Chain F: V.390, G.391 Chain H: V.390, G.391 Ligands: K.2, K.3, K.4, K.23, K.24, K.25, K.44, K.45, K.46, K.65, K.67 Ligand excluded by PLIP K.67: 19 residues within 4Å: Chain B: T.389, V.390 Chain D: T.389, V.390 Chain F: T.389, V.390 Chain H: T.389, V.390 Ligands: K.3, K.4, K.5, K.24, K.25, K.26, K.45, K.46, K.47, K.66, K.68 Ligand excluded by PLIP K.68: 11 residues within 4Å: Chain B: T.389 Chain D: T.389 Chain F: T.389 Chain H: T.389 Ligands: K.4, K.5, K.25, K.26, K.46, K.47, K.67 Ligand excluded by PLIP

64 x PGW: (1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate(Non-covalent)(Non-functional Binders)

PGW.6: 10 residues within 4Å: Chain B: I.347, P.377, F.380, W.381, V.384 Chain H: I.400, K.403, S.407 Ligands: PGW.10, PGW.53 4 PLIP interactions: 3 interactions with chain B, 1 interactions with chain H Hydrophobic interactions: B:I.347, B:F.380, B:V.384 Hydrogen bonds: H:K.403 PGW.7: 4 residues within 4Å: Chain B: I.313 Chain H: A.360, A.364 Ligands: PGW.8 3 PLIP interactions: 2 interactions with chain H, 1 interactions with chain B Hydrophobic interactions: H:A.360, H:A.364, B:I.313 PGW.8: 2 residues within 4Å: Chain H: G.401 Ligands: PGW.7 No protein-ligand interaction detected (PLIP) PGW.9: 1 residues within 4Å: Chain B: I.310 1 PLIP interactions: 1 interactions with chain B Hydrophobic interactions: B:I.310 PGW.10: 2 residues within 4Å: Chain H: I.404 Ligands: PGW.6 1 PLIP interactions: 1 interactions with chain H Hydrophobic interactions: H:I.404 PGW.11: 4 residues within 4Å: Chain B: V.197 Chain H: P.377, F.380 Ligands: PGW.69 3 PLIP interactions: 1 interactions with chain B, 2 interactions with chain H Hydrophobic interactions: B:V.197, H:P.377, H:F.380 PGW.12: 4 residues within 4Å: Chain B: I.347 Chain H: T.416 Ligands: PGW.13, PGW.17 1 PLIP interactions: 1 interactions with chain B Hydrophobic interactions: B:I.347 PGW.13: 4 residues within 4Å: Chain B: M.340, G.344 Ligands: PGW.12, PGW.58 No protein-ligand interaction detected (PLIP) PGW.14: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP) PGW.15: 3 residues within 4Å: Chain B: I.194, P.240, F.241 4 PLIP interactions: 4 interactions with chain B Hydrophobic interactions: B:I.194, B:P.240, B:F.241, B:F.241 PGW.16: 12 residues within 4Å: Chain B: V.189, L.322, H.325, S.326, K.327, G.328 Chain H: R.341, G.344, L.345, I.347, F.348 Ligands: PGW.76 6 PLIP interactions: 3 interactions with chain B, 3 interactions with chain H Hydrophobic interactions: B:V.189, H:I.347, H:F.348 Hydrogen bonds: B:K.327, B:G.328 Salt bridges: H:R.341 PGW.17: 4 residues within 4Å: Chain B: L.332 Chain H: F.349, L.356 Ligands: PGW.12 2 PLIP interactions: 1 interactions with chain H, 1 interactions with chain B Hydrophobic interactions: H:L.356, B:L.332 PGW.18: 12 residues within 4Å: Chain B: I.273, M.274, F.320, S.323, K.327, L.329, Q.330, G.333, Q.334, K.337, R.434, E.435 12 PLIP interactions: 12 interactions with chain B Hydrophobic interactions: B:I.273, B:I.273, B:F.320, B:Q.330, B:K.337, B:K.337 Hydrogen bonds: B:K.327, B:Q.334, B:R.434, B:R.434, B:R.434 Salt bridges: B:K.327 PGW.19: 2 residues within 4Å: Chain B: Y.285, E.293 No protein-ligand interaction detected (PLIP) PGW.20: 2 residues within 4Å: Chain B: I.276, I.283 1 PLIP interactions: 1 interactions with chain B Hydrophobic interactions: B:I.276 PGW.21: 2 residues within 4Å: Chain B: F.237, L.247 2 PLIP interactions: 2 interactions with chain B Hydrophobic interactions: B:F.237, B:L.247 PGW.27: 10 residues within 4Å: Chain D: I.347, P.377, F.380, W.381, V.384 Chain F: I.400, K.403, S.407 Ligands: PGW.31, PGW.74 4 PLIP interactions: 3 interactions with chain D, 1 interactions with chain F Hydrophobic interactions: D:I.347, D:F.380, D:V.384 Hydrogen bonds: F:K.403 PGW.28: 4 residues within 4Å: Chain D: I.313 Chain F: A.360, A.364 Ligands: PGW.29 3 PLIP interactions: 2 interactions with chain F, 1 interactions with chain D Hydrophobic interactions: F:A.360, F:A.364, D:I.313 PGW.29: 2 residues within 4Å: Chain F: G.401 Ligands: PGW.28 No protein-ligand interaction detected (PLIP) PGW.30: 1 residues within 4Å: Chain D: I.310 1 PLIP interactions: 1 interactions with chain D Hydrophobic interactions: D:I.310 PGW.31: 2 residues within 4Å: Chain F: I.404 Ligands: PGW.27 1 PLIP interactions: 1 interactions with chain F Hydrophobic interactions: F:I.404 PGW.32: 4 residues within 4Å: Chain D: V.197 Chain F: P.377, F.380 Ligands: PGW.48 3 PLIP interactions: 2 interactions with chain F, 1 interactions with chain D Hydrophobic interactions: F:P.377, F:F.380, D:V.197 PGW.33: 4 residues within 4Å: Chain D: I.347 Chain F: T.416 Ligands: PGW.34, PGW.38 1 PLIP interactions: 1 interactions with chain D Hydrophobic interactions: D:I.347 PGW.34: 4 residues within 4Å: Chain D: M.340, G.344 Ligands: PGW.33, PGW.79 No protein-ligand interaction detected (PLIP) PGW.35: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP) PGW.36: 3 residues within 4Å: Chain D: I.194, P.240, F.241 4 PLIP interactions: 4 interactions with chain D Hydrophobic interactions: D:I.194, D:P.240, D:F.241, D:F.241 PGW.37: 12 residues within 4Å: Chain D: V.189, L.322, H.325, S.326, K.327, G.328 Chain F: R.341, G.344, L.345, I.347, F.348 Ligands: PGW.55 6 PLIP interactions: 3 interactions with chain D, 3 interactions with chain F Hydrophobic interactions: D:V.189, F:I.347, F:F.348 Hydrogen bonds: D:K.327, D:G.328 Salt bridges: F:R.341 PGW.38: 4 residues within 4Å: Chain D: L.332 Chain F: F.349, L.356 Ligands: PGW.33 2 PLIP interactions: 1 interactions with chain F, 1 interactions with chain D Hydrophobic interactions: F:L.356, D:L.332 PGW.39: 12 residues within 4Å: Chain D: I.273, M.274, F.320, S.323, K.327, L.329, Q.330, G.333, Q.334, K.337, R.434, E.435 12 PLIP interactions: 12 interactions with chain D Hydrophobic interactions: D:I.273, D:I.273, D:F.320, D:Q.330, D:K.337, D:K.337 Hydrogen bonds: D:K.327, D:Q.334, D:R.434, D:R.434, D:R.434 Salt bridges: D:K.327 PGW.40: 2 residues within 4Å: Chain D: Y.285, E.293 No protein-ligand interaction detected (PLIP) PGW.41: 2 residues within 4Å: Chain D: I.276, I.283 1 PLIP interactions: 1 interactions with chain D Hydrophobic interactions: D:I.276 PGW.42: 2 residues within 4Å: Chain D: F.237, L.247 2 PLIP interactions: 2 interactions with chain D Hydrophobic interactions: D:F.237, D:L.247 PGW.48: 10 residues within 4Å: Chain B: I.400, K.403, S.407 Chain F: I.347, P.377, F.380, W.381, V.384 Ligands: PGW.32, PGW.52 4 PLIP interactions: 3 interactions with chain F, 1 interactions with chain B Hydrophobic interactions: F:I.347, F:F.380, F:V.384 Hydrogen bonds: B:K.403 PGW.49: 4 residues within 4Å: Chain B: A.360, A.364 Chain F: I.313 Ligands: PGW.50 3 PLIP interactions: 2 interactions with chain B, 1 interactions with chain F Hydrophobic interactions: B:A.360, B:A.364, F:I.313 PGW.50: 2 residues within 4Å: Chain B: G.401 Ligands: PGW.49 No protein-ligand interaction detected (PLIP) PGW.51: 1 residues within 4Å: Chain F: I.310 1 PLIP interactions: 1 interactions with chain F Hydrophobic interactions: F:I.310 PGW.52: 2 residues within 4Å: Chain B: I.404 Ligands: PGW.48 1 PLIP interactions: 1 interactions with chain B Hydrophobic interactions: B:I.404 PGW.53: 4 residues within 4Å: Chain B: P.377, F.380 Chain F: V.197 Ligands: PGW.6 3 PLIP interactions: 1 interactions with chain F, 2 interactions with chain B Hydrophobic interactions: F:V.197, B:P.377, B:F.380 PGW.54: 4 residues within 4Å: Chain B: T.416 Chain F: I.347 Ligands: PGW.55, PGW.59 1 PLIP interactions: 1 interactions with chain F Hydrophobic interactions: F:I.347 PGW.55: 4 residues within 4Å: Chain F: M.340, G.344 Ligands: PGW.37, PGW.54 No protein-ligand interaction detected (PLIP) PGW.56: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP) PGW.57: 3 residues within 4Å: Chain F: I.194, P.240, F.241 4 PLIP interactions: 4 interactions with chain F Hydrophobic interactions: F:I.194, F:P.240, F:F.241, F:F.241 PGW.58: 12 residues within 4Å: Chain B: R.341, G.344, L.345, I.347, F.348 Chain F: V.189, L.322, H.325, S.326, K.327, G.328 Ligands: PGW.13 6 PLIP interactions: 3 interactions with chain B, 3 interactions with chain F Hydrophobic interactions: B:I.347, B:F.348, F:V.189 Salt bridges: B:R.341 Hydrogen bonds: F:K.327, F:G.328 PGW.59: 4 residues within 4Å: Chain B: F.349, L.356 Chain F: L.332 Ligands: PGW.54 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain F Hydrophobic interactions: B:L.356, F:L.332 PGW.60: 12 residues within 4Å: Chain F: I.273, M.274, F.320, S.323, K.327, L.329, Q.330, G.333, Q.334, K.337, R.434, E.435 12 PLIP interactions: 12 interactions with chain F Hydrophobic interactions: F:I.273, F:I.273, F:F.320, F:Q.330, F:K.337, F:K.337 Hydrogen bonds: F:K.327, F:Q.334, F:R.434, F:R.434, F:R.434 Salt bridges: F:K.327 PGW.61: 2 residues within 4Å: Chain F: Y.285, E.293 No protein-ligand interaction detected (PLIP) PGW.62: 2 residues within 4Å: Chain F: I.276, I.283 1 PLIP interactions: 1 interactions with chain F Hydrophobic interactions: F:I.276 PGW.63: 2 residues within 4Å: Chain F: F.237, L.247 2 PLIP interactions: 2 interactions with chain F Hydrophobic interactions: F:F.237, F:L.247 PGW.69: 10 residues within 4Å: Chain D: I.400, K.403, S.407 Chain H: I.347, P.377, F.380, W.381, V.384 Ligands: PGW.11, PGW.73 4 PLIP interactions: 3 interactions with chain H, 1 interactions with chain D Hydrophobic interactions: H:I.347, H:F.380, H:V.384 Hydrogen bonds: D:K.403 PGW.70: 4 residues within 4Å: Chain D: A.360, A.364 Chain H: I.313 Ligands: PGW.71 3 PLIP interactions: 2 interactions with chain D, 1 interactions with chain H Hydrophobic interactions: D:A.360, D:A.364, H:I.313 PGW.71: 2 residues within 4Å: Chain D: G.401 Ligands: PGW.70 No protein-ligand interaction detected (PLIP) PGW.72: 1 residues within 4Å: Chain H: I.310 1 PLIP interactions: 1 interactions with chain H Hydrophobic interactions: H:I.310 PGW.73: 2 residues within 4Å: Chain D: I.404 Ligands: PGW.69 1 PLIP interactions: 1 interactions with chain D Hydrophobic interactions: D:I.404 PGW.74: 4 residues within 4Å: Chain D: P.377, F.380 Chain H: V.197 Ligands: PGW.27 3 PLIP interactions: 2 interactions with chain D, 1 interactions with chain H Hydrophobic interactions: D:P.377, D:F.380, H:V.197 PGW.75: 4 residues within 4Å: Chain D: T.416 Chain H: I.347 Ligands: PGW.76, PGW.80 1 PLIP interactions: 1 interactions with chain H Hydrophobic interactions: H:I.347 PGW.76: 4 residues within 4Å: Chain H: M.340, G.344 Ligands: PGW.16, PGW.75 No protein-ligand interaction detected (PLIP) PGW.77: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP) PGW.78: 3 residues within 4Å: Chain H: I.194, P.240, F.241 4 PLIP interactions: 4 interactions with chain H Hydrophobic interactions: H:I.194, H:P.240, H:F.241, H:F.241 PGW.79: 12 residues within 4Å: Chain D: R.341, G.344, L.345, I.347, F.348 Chain H: V.189, L.322, H.325, S.326, K.327, G.328 Ligands: PGW.34 6 PLIP interactions: 3 interactions with chain H, 3 interactions with chain D Hydrophobic interactions: H:V.189, D:I.347, D:F.348 Hydrogen bonds: H:K.327, H:G.328 Salt bridges: D:R.341 PGW.80: 4 residues within 4Å: Chain D: F.349, L.356 Chain H: L.332 Ligands: PGW.75 2 PLIP interactions: 1 interactions with chain D, 1 interactions with chain H Hydrophobic interactions: D:L.356, H:L.332 PGW.81: 12 residues within 4Å: Chain H: I.273, M.274, F.320, S.323, K.327, L.329, Q.330, G.333, Q.334, K.337, R.434, E.435 12 PLIP interactions: 12 interactions with chain H Hydrophobic interactions: H:I.273, H:I.273, H:F.320, H:Q.330, H:K.337, H:K.337 Hydrogen bonds: H:K.327, H:Q.334, H:R.434, H:R.434, H:R.434 Salt bridges: H:K.327 PGW.82: 2 residues within 4Å: Chain H: Y.285, E.293 No protein-ligand interaction detected (PLIP) PGW.83: 2 residues within 4Å: Chain H: I.276, I.283 1 PLIP interactions: 1 interactions with chain H Hydrophobic interactions: H:I.276 PGW.84: 2 residues within 4Å: Chain H: F.237, L.247 2 PLIP interactions: 2 interactions with chain H Hydrophobic interactions: H:F.237, H:L.247

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Banerjee, A. et al., Structure of a pore-blocking toxin in complex with a eukaryotic voltage-dependent K(+) channel. Elife (2013)

Release Date

2013-06-12

Peptides

Voltage-gated potassium channel subunit beta-2: ACEG
Potassium voltage-gated channel subfamily A member 2, Potassium voltage-gated channel subfamily B member 1: BDFH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

C
A

E
A

G
A

B
B

D
B

F
B

H
B

Membrane

We predict this structure to be a membrane protein.
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Voltage-gated potassium channel subunit beta-2

Potassium voltage-gated channel subfamily A member 2, Potassium voltage-gated channel subfamily B member 1

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