SMTL ID : 4twk.1

Crystal structure of human two pore domain potassium ion channel TREK1 (K2P2.1)

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.60 Å

Oligo State

homo-dimer

Ligands

3 x K: POTASSIUM ION(Non-covalent)

K.1: 5 residues within 4Å: Chain A: T.118, T.227 Chain B: T.118, T.227 Ligands: K.8 5 PLIP interactions: 2 interactions with chain A, 3 interactions with chain B Metal complexes: A:T.118, A:T.227, B:T.118, B:T.118, B:T.227 K.2: 7 residues within 4Å: Chain A: I.119, G.120, F.121, G.122, I.228 Chain B: F.121, I.228 No protein-ligand interaction detected (PLIP) K.8: 10 residues within 4Å: Chain A: T.118, I.119, T.227, I.228 Chain B: T.118, I.119, G.120, T.227, I.228 Ligands: K.1 5 PLIP interactions: 2 interactions with chain A, 3 interactions with chain B Metal complexes: A:I.119, A:I.228, B:T.118, B:T.227, B:I.228

5 x 37X: Octyl Glucose Neopentyl Glycol(Non-covalent)

37X.3: 5 residues within 4Å: Chain A: W.271, V.274, I.275, E.278 Ligands: 37X.6 No protein-ligand interaction detected (PLIP) 37X.4: 2 residues within 4Å: Chain A: K.167, T.171 2 PLIP interactions: 2 interactions with chain A Hydrophobic interactions: A:K.167, A:T.171 37X.5: 10 residues within 4Å: Chain A: D.155, L.157, G.158, T.159, G.162, I.165, S.186, T.187, Y.260, M.267 4 PLIP interactions: 4 interactions with chain A Hydrophobic interactions: A:L.157 Hydrogen bonds: A:D.155, A:T.159, A:T.159 37X.6: 9 residues within 4Å: Chain A: T.180, T.187, F.190, I.191, M.267, D.270, W.271, V.274 Ligands: 37X.3 7 PLIP interactions: 7 interactions with chain A Hydrophobic interactions: A:F.190, A:I.191, A:M.267, A:D.270, A:W.271, A:V.274 Hydrogen bonds: A:T.187 37X.10: 14 residues within 4Å: Chain A: Q.81, I.82, A.84, A.85, A.88, I.90, P.92, R.127 Chain B: E.49, Q.52, T.55, I.56, Q.59, K.60 13 PLIP interactions: 8 interactions with chain A, 5 interactions with chain B Hydrophobic interactions: A:Q.81, A:I.82, A:A.88, A:I.90, A:P.92, B:Q.52, B:K.60 Hydrogen bonds: A:Q.81, A:R.127, B:Q.52, B:Q.59, B:Q.59 Salt bridges: A:R.127

1 x MG: MAGNESIUM ION(Non-covalent)

MG.7: 4 residues within 4Å: Chain A: G.89, Q.99, H.102, G.236 3 PLIP interactions: 3 interactions with chain A Metal complexes: A:G.89, A:H.102, A:G.236

1 x NAG: 2-acetamido-2-deoxy-beta-D-glucopyranose(Post Translational Modification)

NAG.9: 2 residues within 4Å: Chain B: N.71, T.73 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:T.73

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Pike, A.C.W. et al., Crystal structure of human two pore domain potassium ion channel TREK1 (K2P2.1). To Be Published

Release Date

2014-08-06

Peptides

Potassium channel subfamily K member 2: 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 2