SMTL ID : 9ft7.1

Structure of the human two pore domain potassium ion channel THIK-1 (K2P13.1) in a closed conformation

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

homo-dimer

Ligands

2 x EIC: LINOLEIC ACID(Non-covalent)

EIC.1: 12 residues within 4Å: Chain A: Y.95, G.98, S.102, S.239, R.251, N.254, F.255, I.258, L.259 Chain B: A.17, I.20, V.21 10 PLIP interactions: 2 interactions with chain B, 8 interactions with chain A Hydrophobic interactions: B:A.17, B:I.20, A:Y.95, A:Y.95, A:F.255, A:F.255, A:I.258, A:L.259 Hydrogen bonds: A:S.239, A:N.254 EIC.4: 12 residues within 4Å: Chain A: A.17, I.20, V.21 Chain B: Y.95, G.98, S.102, S.239, R.251, N.254, F.255, I.258, L.259 10 PLIP interactions: 8 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:Y.95, B:Y.95, B:F.255, B:F.255, B:I.258, B:L.259, A:A.17, A:I.20 Hydrogen bonds: B:S.239, B:N.254

2 x K: POTASSIUM ION(Non-covalent)

K.2: 8 residues within 4Å: Chain A: G.105, F.106, G.232, F.233 Chain B: G.105, F.106, G.232, F.233 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A Metal complexes: B:F.233, A:F.233 K.3: 8 residues within 4Å: Chain A: T.103, I.104, T.230, I.231 Chain B: T.103, I.104, T.230, I.231 5 PLIP interactions: 3 interactions with chain B, 2 interactions with chain A Metal complexes: B:T.103, B:T.230, B:I.231, A:T.103, A:T.230

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Rodstrom, K.E.J. et al., Cryo-EM structure of the human THIK-1 K2P K + channel reveals a lower Y gate regulated by lipids and anesthetics. Nat.Struct.Mol.Biol. (2025)

Release Date

2025-03-05

Peptides

Potassium channel subfamily K member 13: 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 13