SMTL ID : 1jvm.2 (1 other biounit)

KCSA POTASSIUM CHANNEL WITH TBA (TETRABUTYLAMMONIUM) AND RUBIDIUM

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.80 Å

Oligo State

homo-octamer

Ligands

6 x RB: RUBIDIUM ION(Non-covalent)

RB.1: 8 residues within 4Å: Chain A: G.77, Y.78 Chain B: G.77, Y.78 Chain C: G.77, Y.78 Chain D: G.77, Y.78 5 PLIP interactions: 1 interactions with chain D, 1 interactions with chain C, 1 interactions with chain B, 1 interactions with chain A, 1 Ligand-Water interactions Metal complexes: D:G.77, C:G.77, B:G.77, A:G.77, H2O.1 RB.2: 10 residues within 4Å: Chain A: T.75, V.76, G.77 Chain B: T.75, V.76 Chain C: T.75, V.76 Chain D: T.75, V.76 Ligands: RB.3 5 PLIP interactions: 2 interactions with chain A, 1 interactions with chain D, 1 interactions with chain B, 1 Ligand-Water interactions Metal complexes: A:T.75, A:V.76, D:V.76, B:T.75, H2O.1 RB.3: 5 residues within 4Å: Chain A: T.75 Chain B: T.75 Chain C: T.75 Chain D: T.75 Ligands: RB.2 5 PLIP interactions: 2 interactions with chain B, 2 interactions with chain C, 1 interactions with chain A Metal complexes: B:T.75, B:T.75, C:T.75, C:T.75, A:T.75 RB.5: 8 residues within 4Å: Chain E: G.77, Y.78 Chain F: G.77, Y.78 Chain G: G.77, Y.78 Chain H: G.77, Y.78 5 PLIP interactions: 1 interactions with chain F, 1 interactions with chain G, 1 interactions with chain E, 1 interactions with chain H, 1 Ligand-Water interactions Metal complexes: F:G.77, G:G.77, E:G.77, H:G.77, H2O.1 RB.6: 10 residues within 4Å: Chain E: T.75, V.76, G.77 Chain F: T.75, V.76 Chain G: T.75, V.76 Chain H: T.75, V.76 Ligands: RB.7 5 PLIP interactions: 1 interactions with chain H, 1 interactions with chain F, 2 interactions with chain E, 1 Ligand-Water interactions Metal complexes: H:V.76, F:T.75, E:T.75, E:V.76, H2O.1 RB.7: 5 residues within 4Å: Chain E: T.75 Chain F: T.75 Chain G: T.75 Chain H: T.75 Ligands: RB.6 5 PLIP interactions: 2 interactions with chain F, 2 interactions with chain G, 1 interactions with chain E Metal complexes: F:T.75, F:T.75, G:T.75, G:T.75, E:T.75

2 x TBA: TETRABUTYLAMMONIUM ION(Non-covalent)

TBA.4: 3 residues within 4Å: Chain A: T.75, I.100 Chain B: T.75 1 PLIP interactions: 1 interactions with chain A Hydrophobic interactions: A:I.100 TBA.8: 3 residues within 4Å: Chain E: T.75, I.100 Chain F: T.75 1 PLIP interactions: 1 interactions with chain E Hydrophobic interactions: E:I.100

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Morais-Cabral, J.H. et al., Energetic optimization of ion conduction rate by the K+ selectivity filter. Nature (2001)

Release Date

2001-12-05

Peptides

Voltage-gated potassium channel: ABCDEFGH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

E
A

F
B

G
C

H
D

Membrane

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

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