SMTL ID : 4lbe.1

Structure of KcsA with R122A mutation

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.75 Å

Oligo State

hetero-oligomer

Ligands

4 x F09: NONAN-1-OL(Non-covalent)

F09.1: 2 residues within 4Å: Chain A: R.57 Chain C: W.93 3 PLIP interactions: 1 interactions with chain C, 2 interactions with chain A Hydrophobic interactions: C:W.93 Hydrogen bonds: A:R.57, A:R.57 F09.6: 2 residues within 4Å: Chain D: R.57 Chain F: W.93 3 PLIP interactions: 2 interactions with chain D, 1 interactions with chain F Hydrogen bonds: D:R.57, D:R.57 Hydrophobic interactions: F:W.93 F09.11: 2 residues within 4Å: Chain G: R.57 Chain I: W.93 3 PLIP interactions: 1 interactions with chain I, 2 interactions with chain G Hydrophobic interactions: I:W.93 Hydrogen bonds: G:R.57, G:R.57 F09.16: 2 residues within 4Å: Chain J: R.57 Chain L: W.93 3 PLIP interactions: 1 interactions with chain L, 2 interactions with chain J Hydrophobic interactions: L:W.93 Hydrogen bonds: J:R.57, J:R.57

4 x DGA: DIACYL GLYCEROL(Non-covalent)

DGA.2: 11 residues within 4Å: Chain C: V.90, L.92, R.95, L.96 Chain I: L.47, Y.51, Y.68, P.69, L.72, W.73, V.76 10 PLIP interactions: 6 interactions with chain I, 4 interactions with chain C Hydrophobic interactions: I:Y.51, I:Y.51, I:Y.68, I:L.72, I:W.73, I:V.76, C:L.92, C:L.96 Water bridges: C:L.92 Salt bridges: C:R.95 DGA.7: 11 residues within 4Å: Chain F: V.90, L.92, R.95, L.96 Chain L: L.47, Y.51, Y.68, P.69, L.72, W.73, V.76 10 PLIP interactions: 6 interactions with chain L, 4 interactions with chain F Hydrophobic interactions: L:Y.51, L:Y.51, L:Y.68, L:L.72, L:W.73, L:V.76, F:L.92, F:L.96 Water bridges: F:L.92 Salt bridges: F:R.95 DGA.12: 11 residues within 4Å: Chain F: L.47, Y.51, Y.68, P.69, L.72, W.73, V.76 Chain I: V.90, L.92, R.95, L.96 10 PLIP interactions: 6 interactions with chain F, 4 interactions with chain I Hydrophobic interactions: F:Y.51, F:Y.51, F:Y.68, F:L.72, F:W.73, F:V.76, I:L.92, I:L.96 Water bridges: I:L.92 Salt bridges: I:R.95 DGA.17: 11 residues within 4Å: Chain C: L.47, Y.51, Y.68, P.69, L.72, W.73, V.76 Chain L: V.90, L.92, R.95, L.96 10 PLIP interactions: 6 interactions with chain C, 4 interactions with chain L Hydrophobic interactions: C:Y.51, C:Y.51, C:Y.68, C:L.72, C:W.73, C:V.76, L:L.92, L:L.96 Water bridges: L:L.92 Salt bridges: L:R.95

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

K.3: 7 residues within 4Å: Chain C: G.83 Chain F: G.83 Chain I: G.83 Chain L: G.83 Ligands: K.8, K.13, K.18 4 PLIP interactions: 1 interactions with chain I, 1 interactions with chain F, 1 interactions with chain C, 1 interactions with chain L Metal complexes: I:G.83, F:G.83, C:G.83, L:G.83 K.4: 7 residues within 4Å: Chain C: T.81 Chain F: T.81 Chain I: T.81 Chain L: T.81 Ligands: K.9, K.14, K.19 4 PLIP interactions: 1 interactions with chain F, 1 interactions with chain I, 1 interactions with chain L, 1 interactions with chain C Metal complexes: F:T.81, I:T.81, L:T.81, C:T.81 K.5: 3 residues within 4Å: Ligands: K.10, K.15, K.20 No protein-ligand interaction detected (PLIP) K.8: 7 residues within 4Å: Chain C: G.83 Chain F: G.83 Chain I: G.83 Chain L: G.83 Ligands: K.3, K.13, K.18 4 PLIP interactions: 1 interactions with chain I, 1 interactions with chain F, 1 interactions with chain C, 1 interactions with chain L Metal complexes: I:G.83, F:G.83, C:G.83, L:G.83 K.9: 7 residues within 4Å: Chain C: T.81 Chain F: T.81 Chain I: T.81 Chain L: T.81 Ligands: K.4, K.14, K.19 4 PLIP interactions: 1 interactions with chain F, 1 interactions with chain I, 1 interactions with chain L, 1 interactions with chain C Metal complexes: F:T.81, I:T.81, L:T.81, C:T.81 K.10: 3 residues within 4Å: Ligands: K.5, K.15, K.20 No protein-ligand interaction detected (PLIP) K.13: 7 residues within 4Å: Chain C: G.83 Chain F: G.83 Chain I: G.83 Chain L: G.83 Ligands: K.3, K.8, K.18 4 PLIP interactions: 1 interactions with chain I, 1 interactions with chain F, 1 interactions with chain C, 1 interactions with chain L Metal complexes: I:G.83, F:G.83, C:G.83, L:G.83 K.14: 7 residues within 4Å: Chain C: T.81 Chain F: T.81 Chain I: T.81 Chain L: T.81 Ligands: K.4, K.9, K.19 4 PLIP interactions: 1 interactions with chain F, 1 interactions with chain I, 1 interactions with chain L, 1 interactions with chain C Metal complexes: F:T.81, I:T.81, L:T.81, C:T.81 K.15: 3 residues within 4Å: Ligands: K.5, K.10, K.20 No protein-ligand interaction detected (PLIP) K.18: 7 residues within 4Å: Chain C: G.83 Chain F: G.83 Chain I: G.83 Chain L: G.83 Ligands: K.3, K.8, K.13 4 PLIP interactions: 1 interactions with chain L, 1 interactions with chain F, 1 interactions with chain C, 1 interactions with chain I Metal complexes: L:G.83, F:G.83, C:G.83, I:G.83 K.19: 7 residues within 4Å: Chain C: T.81 Chain F: T.81 Chain I: T.81 Chain L: T.81 Ligands: K.4, K.9, K.14 4 PLIP interactions: 1 interactions with chain F, 1 interactions with chain L, 1 interactions with chain C, 1 interactions with chain I Metal complexes: F:T.81, L:T.81, C:T.81, I:T.81 K.20: 3 residues within 4Å: Ligands: K.5, K.10, K.15 No protein-ligand interaction detected (PLIP)

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Posson, D.J. et al., Molecular interactions involved in proton-dependent gating in KcsA potassium channels. J.Gen.Physiol. (2013)

Release Date

2013-10-30

Peptides

Fab light chain: ADGJ
Fab heavy chain: BEHK
pH-gated potassium channel KcsA: CFIL

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

D
A

G
A

J
A

B
B

E
B

H
B

K
B

C
C

F
C

I
C

L
C

Membrane

We predict this structure to be a membrane protein.
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Fab light chain

Fab heavy chain

pH-gated potassium channel KcsA

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