SMTL ID : 6rv4.2 (1 other biounit)

Crystal structure of the human two pore domain potassium ion channel TASK-1 (K2P3.1) in a closed conformation with a bound inhibitor BAY 2341237

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 3.10 Å

Oligo State

homo-dimer

Ligands

4 x K: POTASSIUM ION(Non-covalent)

K.1: 10 residues within 4Å: Chain A: I.94, G.95, I.200, G.201 Chain B: I.94, G.95, I.200, G.201 Ligands: K.2, K.6 5 PLIP interactions: 3 interactions with chain B, 2 interactions with chain A Metal complexes: B:G.95, B:I.200, B:G.201, A:I.94, A:G.201 K.2: 10 residues within 4Å: Chain A: T.93, I.94, T.199, I.200 Chain B: T.93, I.94, T.199, I.200 Ligands: K.1, K.3 5 PLIP interactions: 3 interactions with chain B, 2 interactions with chain A Metal complexes: B:T.93, B:I.94, B:I.200, A:T.93, A:I.94 K.3: 6 residues within 4Å: Chain A: T.93, T.199 Chain B: T.93, T.199 Ligands: K.2, KKZ.8 5 PLIP interactions: 2 interactions with chain B, 3 interactions with chain A Metal complexes: B:T.93, B:T.199, A:T.93, A:T.93, A:T.199 K.6: 9 residues within 4Å: Chain A: G.95, Y.96, G.201, F.202 Chain B: G.95, Y.96, G.201, F.202 Ligands: K.1 5 PLIP interactions: 2 interactions with chain B, 3 interactions with chain A Metal complexes: B:G.95, B:Y.96, A:G.95, A:Y.96, A:G.201

2 x PC1: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE(Non-covalent)

PC1.4: 4 residues within 4Å: Chain A: G.105, V.108, F.112 Chain B: L.29 4 PLIP interactions: 3 interactions with chain A, 1 interactions with chain B Hydrophobic interactions: A:V.108, A:F.112, A:F.112, B:L.29 PC1.5: 6 residues within 4Å: Chain A: V.25, A.28, L.29 Chain B: G.105, V.108, F.112 4 PLIP interactions: 1 interactions with chain A, 3 interactions with chain B Hydrophobic interactions: A:L.29, B:V.108, B:F.112, B:F.112

2 x Y01: CHOLESTEROL HEMISUCCINATE(Non-covalent)

Y01.7: 11 residues within 4Å: Chain A: R.3, V.6, R.7, L.11, F.238, V.242, F.246 Chain B: L.115, P.119, L.120, V.123 9 PLIP interactions: 7 interactions with chain A, 2 interactions with chain B Hydrophobic interactions: A:V.6, A:R.7, A:L.11, A:F.238, A:V.242, A:F.246, B:L.115, B:V.123 Salt bridges: A:R.7 Y01.9: 11 residues within 4Å: Chain A: L.115, P.119, L.120, V.123 Chain B: R.3, V.6, R.7, L.11, F.238, V.242, F.246 12 PLIP interactions: 8 interactions with chain B, 4 interactions with chain A Hydrophobic interactions: B:V.6, B:R.7, B:L.11, B:F.238, B:V.242, B:F.246, A:L.115, A:P.119, A:V.123, A:V.123 Salt bridges: B:R.3, B:R.7

1 x KKZ: [4-[[2-(4-chlorophenyl)imidazo[1,2-a]pyridin-3-yl]methyl]piperazin-1-yl]-[6-(trifluoromethyloxy)pyridin-2-yl]methanone(Non-covalent)

KKZ.8: 25 residues within 4Å: Chain A: I.91, T.92, T.93, I.118, T.121, L.122, F.125, L.197, T.198, T.199, L.232, I.235, L.239 Chain B: T.92, T.93, I.118, L.122, L.197, T.198, T.199, L.232, I.235, G.236, L.239 Ligands: K.3 11 PLIP interactions: 5 interactions with chain B, 6 interactions with chain A Hydrophobic interactions: B:I.118, B:L.122, B:I.235, B:L.239, A:T.121, A:L.122, A:F.125, A:L.232, A:I.235, A:L.239 Halogen bonds: B:T.198

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Rodstrom, K.E.J. et al., A lower X-gate in TASK channels traps inhibitors within the vestibule. Nature (2020)

Release Date

2019-08-07

Peptides

Potassium channel subfamily K member 3: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
C

B
D

Membrane

We predict this structure to be a membrane protein.
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Potassium channel subfamily K member 3

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