SMTL ID : 4msw.2 (1 other biounit)

Y78 ester mutant of KcsA in high K+

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.06 Å

Oligo State

homo-tetramer

Ligands

4 x DGA: DIACYL GLYCEROL(Non-covalent)

DGA.1: 7 residues within 4Å: Chain A: L.65, R.68 Chain C: Y.24, Y.41, P.42, L.45, W.46 7 PLIP interactions: 5 interactions with chain C, 2 interactions with chain A Hydrophobic interactions: C:Y.24, C:Y.41, C:P.42, C:L.45, C:W.46, A:L.65 Hydrogen bonds: A:L.65 DGA.8: 7 residues within 4Å: Chain B: L.65, R.68 Chain D: Y.24, Y.41, P.42, L.45, W.46 7 PLIP interactions: 5 interactions with chain D, 2 interactions with chain B Hydrophobic interactions: D:Y.24, D:Y.41, D:P.42, D:L.45, D:W.46, B:L.65 Hydrogen bonds: B:L.65 DGA.15: 7 residues within 4Å: Chain B: Y.24, Y.41, P.42, L.45, W.46 Chain C: L.65, R.68 7 PLIP interactions: 5 interactions with chain B, 2 interactions with chain C Hydrophobic interactions: B:Y.24, B:Y.41, B:P.42, B:L.45, B:W.46, C:L.65 Hydrogen bonds: C:L.65 DGA.22: 7 residues within 4Å: Chain A: Y.24, Y.41, P.42, L.45, W.46 Chain D: L.65, R.68 7 PLIP interactions: 2 interactions with chain D, 5 interactions with chain A Hydrophobic interactions: D:L.65, A:Y.24, A:Y.41, A:P.42, A:L.45, A:W.46 Hydrogen bonds: D:L.65

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

K.2: 11 residues within 4Å: Chain A: G.56, X.57 Chain B: G.56, X.57 Chain C: G.56, X.57 Chain D: G.56, X.57 Ligands: K.9, K.16, K.23 Ligand excluded by PLIP K.3: 15 residues within 4Å: Chain A: T.54, V.55 Chain B: T.54, V.55 Chain C: T.54, V.55 Chain D: T.54, V.55 Ligands: K.4, K.10, K.11, K.17, K.18, K.24, K.25 Ligand excluded by PLIP K.4: 11 residues within 4Å: Chain A: T.54 Chain B: T.54 Chain C: T.54 Chain D: T.54 Ligands: K.3, K.10, K.11, K.17, K.18, K.24, K.25 Ligand excluded by PLIP K.5: 3 residues within 4Å: Ligands: K.12, K.19, K.26 Ligand excluded by PLIP K.6: 7 residues within 4Å: Ligands: K.7, K.13, K.14, K.20, K.21, K.27, K.28 Ligand excluded by PLIP K.7: 7 residues within 4Å: Ligands: K.6, K.13, K.14, K.20, K.21, K.27, K.28 Ligand excluded by PLIP K.9: 11 residues within 4Å: Chain A: G.56, X.57 Chain B: G.56, X.57 Chain C: G.56, X.57 Chain D: G.56, X.57 Ligands: K.2, K.16, K.23 Ligand excluded by PLIP K.10: 15 residues within 4Å: Chain A: T.54, V.55 Chain B: T.54, V.55 Chain C: T.54, V.55 Chain D: T.54, V.55 Ligands: K.3, K.4, K.11, K.17, K.18, K.24, K.25 Ligand excluded by PLIP K.11: 11 residues within 4Å: Chain A: T.54 Chain B: T.54 Chain C: T.54 Chain D: T.54 Ligands: K.3, K.4, K.10, K.17, K.18, K.24, K.25 Ligand excluded by PLIP K.12: 3 residues within 4Å: Ligands: K.5, K.19, K.26 Ligand excluded by PLIP K.13: 7 residues within 4Å: Ligands: K.6, K.7, K.14, K.20, K.21, K.27, K.28 Ligand excluded by PLIP K.14: 7 residues within 4Å: Ligands: K.6, K.7, K.13, K.20, K.21, K.27, K.28 Ligand excluded by PLIP K.16: 11 residues within 4Å: Chain A: G.56, X.57 Chain B: G.56, X.57 Chain C: G.56, X.57 Chain D: G.56, X.57 Ligands: K.2, K.9, K.23 Ligand excluded by PLIP K.17: 15 residues within 4Å: Chain A: T.54, V.55 Chain B: T.54, V.55 Chain C: T.54, V.55 Chain D: T.54, V.55 Ligands: K.3, K.4, K.10, K.11, K.18, K.24, K.25 Ligand excluded by PLIP K.18: 11 residues within 4Å: Chain A: T.54 Chain B: T.54 Chain C: T.54 Chain D: T.54 Ligands: K.3, K.4, K.10, K.11, K.17, K.24, K.25 Ligand excluded by PLIP K.19: 3 residues within 4Å: Ligands: K.5, K.12, K.26 Ligand excluded by PLIP K.20: 7 residues within 4Å: Ligands: K.6, K.7, K.13, K.14, K.21, K.27, K.28 Ligand excluded by PLIP K.21: 7 residues within 4Å: Ligands: K.6, K.7, K.13, K.14, K.20, K.27, K.28 Ligand excluded by PLIP K.23: 11 residues within 4Å: Chain A: G.56, X.57 Chain B: G.56, X.57 Chain C: G.56, X.57 Chain D: G.56, X.57 Ligands: K.2, K.9, K.16 Ligand excluded by PLIP K.24: 15 residues within 4Å: Chain A: T.54, V.55 Chain B: T.54, V.55 Chain C: T.54, V.55 Chain D: T.54, V.55 Ligands: K.3, K.4, K.10, K.11, K.17, K.18, K.25 Ligand excluded by PLIP K.25: 11 residues within 4Å: Chain A: T.54 Chain B: T.54 Chain C: T.54 Chain D: T.54 Ligands: K.3, K.4, K.10, K.11, K.17, K.18, K.24 Ligand excluded by PLIP K.26: 3 residues within 4Å: Ligands: K.5, K.12, K.19 Ligand excluded by PLIP K.27: 7 residues within 4Å: Ligands: K.6, K.7, K.13, K.14, K.20, K.21, K.28 Ligand excluded by PLIP K.28: 7 residues within 4Å: Ligands: K.6, K.7, K.13, K.14, K.20, K.21, K.27 Ligand excluded by PLIP

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Matulef, K. et al., Using protein backbone mutagenesis to dissect the link between ion occupancy and C-type inactivation in K+ channels. Proc.Natl.Acad.Sci.USA (2013)

Release Date

2013-10-30

Peptides

pH-gated potassium channel KcsA: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
C

B
C

C
C

D
C

Membrane

We predict this structure to be a membrane protein.
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pH-gated potassium channel KcsA