SMTL ID : 3ldd.1

High resolution open MthK pore structure crystallized in 100 mM K+ and further soaked in 99 mM Na+/1 mM K+.

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.45 Å

Oligo State

homo-tetramer

Ligands

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

K.1: 15 residues within 4Å: Chain A: G.44, Y.45 Chain B: G.44, Y.45 Chain C: G.44, Y.45 Chain D: G.44, Y.45 Ligands: K.2, K.6, K.7, K.11, K.12, K.16, K.17 Ligand excluded by PLIP K.2: 19 residues within 4Å: Chain A: V.43, G.44 Chain B: V.43, G.44 Chain C: V.43, G.44 Chain D: V.43, G.44 Ligands: K.1, K.3, K.6, K.7, K.8, K.11, K.12, K.13, K.16, K.17, K.18 Ligand excluded by PLIP K.3: 19 residues within 4Å: Chain A: T.42, V.43 Chain B: T.42, V.43 Chain C: T.42, V.43 Chain D: T.42, V.43 Ligands: K.2, K.4, K.7, K.8, K.9, K.12, K.13, K.14, K.17, K.18, K.19 Ligand excluded by PLIP K.4: 11 residues within 4Å: Chain A: T.42 Chain B: T.42 Chain C: T.42 Chain D: T.42 Ligands: K.3, K.8, K.9, K.13, K.14, K.18, K.19 Ligand excluded by PLIP K.5: 3 residues within 4Å: Ligands: K.10, K.15, K.20 Ligand excluded by PLIP K.6: 15 residues within 4Å: Chain A: G.44, Y.45 Chain B: G.44, Y.45 Chain C: G.44, Y.45 Chain D: G.44, Y.45 Ligands: K.1, K.2, K.7, K.11, K.12, K.16, K.17 Ligand excluded by PLIP K.7: 19 residues within 4Å: Chain A: V.43, G.44 Chain B: V.43, G.44 Chain C: V.43, G.44 Chain D: V.43, G.44 Ligands: K.1, K.2, K.3, K.6, K.8, K.11, K.12, K.13, K.16, K.17, K.18 Ligand excluded by PLIP K.8: 19 residues within 4Å: Chain A: T.42, V.43 Chain B: T.42, V.43 Chain C: T.42, V.43 Chain D: T.42, V.43 Ligands: K.2, K.3, K.4, K.7, K.9, K.12, K.13, K.14, K.17, K.18, K.19 Ligand excluded by PLIP K.9: 11 residues within 4Å: Chain A: T.42 Chain B: T.42 Chain C: T.42 Chain D: T.42 Ligands: K.3, K.4, K.8, K.13, K.14, K.18, K.19 Ligand excluded by PLIP K.10: 3 residues within 4Å: Ligands: K.5, K.15, K.20 Ligand excluded by PLIP K.11: 15 residues within 4Å: Chain A: G.44, Y.45 Chain B: G.44, Y.45 Chain C: G.44, Y.45 Chain D: G.44, Y.45 Ligands: K.1, K.2, K.6, K.7, K.12, K.16, K.17 Ligand excluded by PLIP K.12: 19 residues within 4Å: Chain A: V.43, G.44 Chain B: V.43, G.44 Chain C: V.43, G.44 Chain D: V.43, G.44 Ligands: K.1, K.2, K.3, K.6, K.7, K.8, K.11, K.13, K.16, K.17, K.18 Ligand excluded by PLIP K.13: 19 residues within 4Å: Chain A: T.42, V.43 Chain B: T.42, V.43 Chain C: T.42, V.43 Chain D: T.42, V.43 Ligands: K.2, K.3, K.4, K.7, K.8, K.9, K.12, K.14, K.17, K.18, K.19 Ligand excluded by PLIP K.14: 11 residues within 4Å: Chain A: T.42 Chain B: T.42 Chain C: T.42 Chain D: T.42 Ligands: K.3, K.4, K.8, K.9, K.13, K.18, K.19 Ligand excluded by PLIP K.15: 3 residues within 4Å: Ligands: K.5, K.10, K.20 Ligand excluded by PLIP K.16: 15 residues within 4Å: Chain A: G.44, Y.45 Chain B: G.44, Y.45 Chain C: G.44, Y.45 Chain D: G.44, Y.45 Ligands: K.1, K.2, K.6, K.7, K.11, K.12, K.17 Ligand excluded by PLIP K.17: 19 residues within 4Å: Chain A: V.43, G.44 Chain B: V.43, G.44 Chain C: V.43, G.44 Chain D: V.43, G.44 Ligands: K.1, K.2, K.3, K.6, K.7, K.8, K.11, K.12, K.13, K.16, K.18 Ligand excluded by PLIP K.18: 19 residues within 4Å: Chain A: T.42, V.43 Chain B: T.42, V.43 Chain C: T.42, V.43 Chain D: T.42, V.43 Ligands: K.2, K.3, K.4, K.7, K.8, K.9, K.12, K.13, K.14, K.17, K.19 Ligand excluded by PLIP K.19: 11 residues within 4Å: Chain A: T.42 Chain B: T.42 Chain C: T.42 Chain D: T.42 Ligands: K.3, K.4, K.8, K.9, K.13, K.14, K.18 Ligand excluded by PLIP K.20: 3 residues within 4Å: Ligands: K.5, K.10, K.15 Ligand excluded by PLIP

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Ye, S. et al., Novel insights into K(+) selectivity from high-resolution structures of an open K(+) channel pore. Nat.Struct.Mol.Biol. (2010)

Release Date

2010-08-11

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