SMTL ID : 8de8.1

Cryo-EM structure of the zebrafish two pore domain K+ channel TREK1 (K2P2.1) in DDM/POPA mixed micelles

Coordinates

PDB Format

Method

ELECTRON MICROSCOPY

Oligo State

homo-dimer

Ligands

4 x D21: (2R)-1-(hexadecanoyloxy)-3-(phosphonooxy)propan-2-yl (9Z)-octadec-9-enoate(Non-covalent)

D21.1: 10 residues within 4Å: Chain A: T.46, I.50, L.53, L.296, R.297, S.300, T.303, K.304 Chain B: L.169, F.172 9 PLIP interactions: 9 interactions with chain A Hydrophobic interactions: A:T.46, A:I.50, A:L.53, A:L.296, A:T.303 Hydrogen bonds: A:S.300 Salt bridges: A:K.301, A:K.304, A:K.304 D21.2: 11 residues within 4Å: Chain A: D.128, L.129, S.130, F.133, F.170, D.268, P.272, W.275, F.276 Chain B: L.58, K.66 11 PLIP interactions: 9 interactions with chain A, 2 interactions with chain B Hydrophobic interactions: A:L.129, A:F.133, A:F.133, A:F.133, A:F.170, A:P.272, A:W.275, A:W.275, A:F.276, B:L.58 Salt bridges: B:K.66 D21.3: 9 residues within 4Å: Chain A: L.169, F.172 Chain B: T.46, I.50, L.53, L.296, S.300, T.303, K.304 9 PLIP interactions: 9 interactions with chain B Hydrophobic interactions: B:T.46, B:I.50, B:L.53, B:L.296, B:T.303 Hydrogen bonds: B:S.300 Salt bridges: B:K.301, B:K.304, B:K.304 D21.4: 11 residues within 4Å: Chain A: L.58, K.66 Chain B: D.128, L.129, S.130, F.133, F.170, D.268, P.272, W.275, F.276 11 PLIP interactions: 9 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:L.129, B:F.133, B:F.133, B:F.133, B:F.170, B:P.272, B:W.275, B:W.275, B:F.276, A:L.58 Salt bridges: A:K.66

4 x K: POTASSIUM ION(Non-covalent)

K.5: 5 residues within 4Å: Chain A: T.142, T.251 Chain B: T.142, T.251 Ligands: K.6 No protein-ligand interaction detected (PLIP) K.6: 10 residues within 4Å: Chain A: T.142, I.143, T.251, I.252 Chain B: T.142, I.143, T.251, I.252 Ligands: K.5, K.7 5 PLIP interactions: 3 interactions with chain B, 2 interactions with chain A Metal complexes: B:T.142, B:I.143, B:T.251, A:T.142, A:T.251 K.7: 10 residues within 4Å: Chain A: I.143, G.144, I.252, G.253 Chain B: I.143, G.144, I.252, G.253 Ligands: K.6, K.8 5 PLIP interactions: 2 interactions with chain B, 3 interactions with chain A Metal complexes: B:I.143, B:I.252, A:I.143, A:G.144, A:I.252 K.8: 9 residues within 4Å: Chain A: G.144, F.145, G.253, F.254 Chain B: G.144, F.145, G.253, F.254 Ligands: K.7 5 PLIP interactions: 3 interactions with chain A, 2 interactions with chain B Metal complexes: A:F.145, A:G.253, A:F.254, B:G.253, B:F.254

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Schmidpeter, P.A.M. et al., Membrane phospholipids control gating of the mechanosensitive potassium leak channel TREK1. Nat Commun (2023)

Release Date

2023-03-08

Peptides

Potassium channel, subfamily K, member 2a: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
A

Membrane

We predict this structure to be a membrane protein.
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Potassium channel, subfamily K, member 2a

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