SMTL ID : 4qe7.1

Open MthK pore structure soaked in 10 mM Ba2+/100 mM Na+

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.40 Å

Oligo State

homo-tetramer

Ligands

12 x BA: BARIUM ION(Non-covalent)

BA.1: 15 residues within 4Å: Chain A: V.42, G.43 Chain B: V.42, G.43 Chain C: V.42, G.43 Chain D: V.42, G.43 Ligands: BA.2, BA.4, BA.5, BA.7, BA.8, BA.10, BA.11 5 PLIP interactions: 1 interactions with chain A, 1 interactions with chain D, 1 interactions with chain C, 1 interactions with chain B, 1 Ligand-Water interactions Metal complexes: A:G.43, D:G.43, C:G.43, B:G.43, H2O.1 BA.2: 19 residues within 4Å: Chain A: T.41, V.42 Chain B: T.41, V.42 Chain C: T.41, V.42 Chain D: T.41, V.42 Ligands: BA.1, BA.3, BA.4, BA.5, BA.6, BA.7, BA.8, BA.9, BA.10, BA.11, BA.12 No protein-ligand interaction detected (PLIP) BA.3: 11 residues within 4Å: Chain A: T.41 Chain B: T.41 Chain C: T.41 Chain D: T.41 Ligands: BA.2, BA.5, BA.6, BA.8, BA.9, BA.11, BA.12 4 PLIP interactions: 1 interactions with chain A, 1 interactions with chain B, 1 interactions with chain C, 1 interactions with chain D Metal complexes: A:T.41, B:T.41, C:T.41, D:T.41 BA.4: 15 residues within 4Å: Chain A: V.42, G.43 Chain B: V.42, G.43 Chain C: V.42, G.43 Chain D: V.42, G.43 Ligands: BA.1, BA.2, BA.5, BA.7, BA.8, BA.10, BA.11 5 PLIP interactions: 1 interactions with chain A, 1 interactions with chain D, 1 interactions with chain C, 1 interactions with chain B, 1 Ligand-Water interactions Metal complexes: A:G.43, D:G.43, C:G.43, B:G.43, H2O.1 BA.5: 19 residues within 4Å: Chain A: T.41, V.42 Chain B: T.41, V.42 Chain C: T.41, V.42 Chain D: T.41, V.42 Ligands: BA.1, BA.2, BA.3, BA.4, BA.6, BA.7, BA.8, BA.9, BA.10, BA.11, BA.12 No protein-ligand interaction detected (PLIP) BA.6: 11 residues within 4Å: Chain A: T.41 Chain B: T.41 Chain C: T.41 Chain D: T.41 Ligands: BA.2, BA.3, BA.5, BA.8, BA.9, BA.11, BA.12 4 PLIP interactions: 1 interactions with chain A, 1 interactions with chain B, 1 interactions with chain C, 1 interactions with chain D Metal complexes: A:T.41, B:T.41, C:T.41, D:T.41 BA.7: 15 residues within 4Å: Chain A: V.42, G.43 Chain B: V.42, G.43 Chain C: V.42, G.43 Chain D: V.42, G.43 Ligands: BA.1, BA.2, BA.4, BA.5, BA.8, BA.10, BA.11 5 PLIP interactions: 1 interactions with chain A, 1 interactions with chain D, 1 interactions with chain C, 1 interactions with chain B, 1 Ligand-Water interactions Metal complexes: A:G.43, D:G.43, C:G.43, B:G.43, H2O.1 BA.8: 19 residues within 4Å: Chain A: T.41, V.42 Chain B: T.41, V.42 Chain C: T.41, V.42 Chain D: T.41, V.42 Ligands: BA.1, BA.2, BA.3, BA.4, BA.5, BA.6, BA.7, BA.9, BA.10, BA.11, BA.12 No protein-ligand interaction detected (PLIP) BA.9: 11 residues within 4Å: Chain A: T.41 Chain B: T.41 Chain C: T.41 Chain D: T.41 Ligands: BA.2, BA.3, BA.5, BA.6, BA.8, BA.11, BA.12 4 PLIP interactions: 1 interactions with chain A, 1 interactions with chain B, 1 interactions with chain C, 1 interactions with chain D Metal complexes: A:T.41, B:T.41, C:T.41, D:T.41 BA.10: 15 residues within 4Å: Chain A: V.42, G.43 Chain B: V.42, G.43 Chain C: V.42, G.43 Chain D: V.42, G.43 Ligands: BA.1, BA.2, BA.4, BA.5, BA.7, BA.8, BA.11 5 PLIP interactions: 1 interactions with chain A, 1 interactions with chain D, 1 interactions with chain C, 1 interactions with chain B, 1 Ligand-Water interactions Metal complexes: A:G.43, D:G.43, C:G.43, B:G.43, H2O.1 BA.11: 19 residues within 4Å: Chain A: T.41, V.42 Chain B: T.41, V.42 Chain C: T.41, V.42 Chain D: T.41, V.42 Ligands: BA.1, BA.2, BA.3, BA.4, BA.5, BA.6, BA.7, BA.8, BA.9, BA.10, BA.12 No protein-ligand interaction detected (PLIP) BA.12: 11 residues within 4Å: Chain A: T.41 Chain B: T.41 Chain C: T.41 Chain D: T.41 Ligands: BA.2, BA.3, BA.5, BA.6, BA.8, BA.9, BA.11 4 PLIP interactions: 1 interactions with chain A, 1 interactions with chain B, 1 interactions with chain C, 1 interactions with chain D Metal complexes: A:T.41, B:T.41, C:T.41, D:T.41

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Guo, R. et al., Ionic interactions of Ba2+ blockades in the MthK K+ channel. J.Gen.Physiol. (2014)

Release Date

2014-07-09

Peptides

Calcium-gated potassium channel MthK: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
A

C
A

D
A

Membrane

We predict this structure to be a membrane protein.
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Calcium-gated potassium channel MthK