SMTL ID : 6rv3.1 (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 1000493

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.90 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.8 5 PLIP interactions: 3 interactions with chain A, 2 interactions with chain B Metal complexes: A:I.94, A:I.200, A:G.201, B:I.200, B: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:I.94, A:I.200 K.3: 5 residues within 4Å: Chain A: T.93, T.199 Chain B: T.93, T.199 Ligands: K.2 5 PLIP interactions: 3 interactions with chain A, 2 interactions with chain B Metal complexes: A:T.93, A:T.93, A:T.199, B:T.93, B:T.199 K.8: 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: 3 interactions with chain A, 2 interactions with chain B Metal complexes: A:Y.96, A:G.201, A:F.202, B:Y.96, B:F.202

4 x Y01: CHOLESTEROL HEMISUCCINATE(Non-covalent)

Y01.4: 11 residues within 4Å: Chain A: R.3, V.6, R.7, L.11, F.238, V.242, F.246 Chain B: L.115, L.116, P.119, V.123 11 PLIP interactions: 4 interactions with chain B, 7 interactions with chain A Hydrophobic interactions: B:L.115, B:L.116, B:P.119, B:V.123, A:V.6, A:R.7, A:V.242, A:F.246, A:F.246, A:F.246 Salt bridges: A:R.3 Y01.5: 10 residues within 4Å: Chain A: R.79, F.80, A.81, F.84, Q.215, P.218, V.221, A.222, F.225 Chain B: F.16 11 PLIP interactions: 2 interactions with chain B, 9 interactions with chain A Hydrophobic interactions: B:F.16, B:F.16, A:F.80, A:A.81, A:F.84, A:V.221, A:F.225, A:F.225 Hydrogen bonds: A:F.80, A:A.81, A:Q.215 Y01.10: 11 residues within 4Å: Chain A: L.115, L.116, P.119, V.123 Chain B: R.3, V.6, R.7, L.11, F.238, V.242, F.246 13 PLIP interactions: 9 interactions with chain B, 4 interactions with chain A Hydrophobic interactions: B:V.6, B:R.7, B:F.238, B:V.242, B:F.246, B:F.246, B:F.246, A:L.115, A:L.116, A:P.119, A:V.123 Salt bridges: B:R.3, B:R.7 Y01.11: 10 residues within 4Å: Chain A: F.16 Chain B: R.79, F.80, A.81, F.84, Q.215, P.218, V.221, A.222, F.225 13 PLIP interactions: 11 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:F.80, B:A.81, B:F.84, B:V.221, B:A.222, B:F.225, B:F.225, A:F.16, A:F.16 Hydrogen bonds: B:F.80, B:A.81, B:Q.215 Salt bridges: B:R.79

2 x DMU: DECYL-BETA-D-MALTOPYRANOSIDE(Non-covalent)

DMU.6: 4 residues within 4Å: Chain A: R.131, I.132, T.134 Chain B: E.254 3 PLIP interactions: 2 interactions with chain A, 1 interactions with chain B Hydrophobic interactions: A:R.131, A:I.132 Hydrogen bonds: B:E.254 DMU.12: 4 residues within 4Å: Chain A: E.254 Chain B: R.131, L.135, Y.138 3 PLIP interactions: 2 interactions with chain B, 1 interactions with chain A Hydrophobic interactions: B:R.131, B:L.135 Hydrogen bonds: A:E.254

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

PC1.7: 3 residues within 4Å: Chain A: L.29 Chain B: V.108, F.112 3 PLIP interactions: 1 interactions with chain A, 2 interactions with chain B Hydrophobic interactions: A:L.29, B:V.108, B:F.112

1 x KKQ: [4-[[2-(4-bromophenyl)imidazo[1,2-a]pyridin-3-yl]methyl]piperazin-1-yl]-(2-fluorophenyl)methanone(Non-covalent)

KKQ.9: 22 residues within 4Å: Chain A: I.91, T.92, T.93, 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.199, L.232, I.235, G.236, L.239 11 PLIP interactions: 6 interactions with chain A, 5 interactions with chain B Hydrophobic interactions: A:T.121, A:L.122, A:F.125, A:L.232, A:I.235, A:L.239, B:I.118, B:L.122, B:T.199, B:I.235, B:L.239

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
A

B
B

Membrane

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

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