SMTL ID : 8k1v.1

Human TWIK-related acid-sensitive potassium channel TASK3 at pH 7.4, 5 mM KCl and 135 mM NaCl

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

homo-dimer

Ligands

6 x Y01: CHOLESTEROL HEMISUCCINATE(Non-covalent)

Y01.1: 5 residues within 4Å: Chain A: R.7, L.11, V.242, F.246 Chain B: P.119 4 PLIP interactions: 3 interactions with chain A, 1 interactions with chain B Hydrophobic interactions: A:L.11, A:V.242, B:P.119 Salt bridges: A:R.3 Y01.2: 4 residues within 4Å: Chain A: I.173, C.181, K.217, F.223 7 PLIP interactions: 7 interactions with chain A Hydrophobic interactions: A:I.173, A:K.217, A:F.223, A:F.223, A:F.223, A:F.223 Salt bridges: A:K.217 Y01.3: 6 residues within 4Å: Chain A: F.80, Q.215, P.218, A.222, M.226 Chain B: F.16 4 PLIP interactions: 3 interactions with chain A, 1 interactions with chain B Hydrophobic interactions: A:F.80, A:P.218, A:A.222, B:F.16 Y01.9: 6 residues within 4Å: Chain A: F.16 Chain B: F.80, Q.215, P.218, A.222, M.226 3 PLIP interactions: 2 interactions with chain B, 1 interactions with chain A Hydrophobic interactions: B:F.80, B:P.218, A:F.16 Y01.10: 6 residues within 4Å: Chain A: P.119, V.123 Chain B: R.7, L.11, V.242, F.246 6 PLIP interactions: 4 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:R.7, B:L.11, B:V.242, A:P.119, A:V.123 Salt bridges: B:R.3 Y01.11: 4 residues within 4Å: Chain B: I.173, C.181, K.217, F.223 7 PLIP interactions: 7 interactions with chain B Hydrophobic interactions: B:I.173, B:K.217, B:F.223, B:F.223, B:F.223, B:F.223 Salt bridges: B:K.217

5 x K: POTASSIUM ION(Non-functional Binders)(Non-covalent)

K.4: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP) K.5: 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.6 4 PLIP interactions: 2 interactions with chain A, 2 interactions with chain B Metal complexes: A:G.95, A:G.201, B:G.95, B:G.201 K.6: 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.5, K.7 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.94, B:I.200 K.7: 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.6, K.8 5 PLIP interactions: 3 interactions with chain B, 2 interactions with chain A Metal complexes: B:T.93, B:T.199, B:I.200, A:T.93, A:I.200 K.8: 5 residues within 4Å: Chain A: T.93, T.199 Chain B: T.93, T.199 Ligands: K.7 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A Metal complexes: B:T.199, A:T.199

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Lin, H. et al., C-type inactivation and proton modulation mechanisms of the TASK3 channel. Proc.Natl.Acad.Sci.USA (2024)

Release Date

2024-04-17

Peptides

Potassium channel subfamily K member 9: 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 9

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