SMTL ID : 9vec.1

structure of human KCNQ1-KCNE1-CaM complex

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-4-4-4-mer

Ligands

8 x CA: CALCIUM ION(Non-covalent)

CA.1: 5 residues within 4Å: Chain A: D.21, D.23, D.25, T.27, E.32 4 PLIP interactions: 4 interactions with chain A Metal complexes: A:D.21, A:D.23, A:T.27, A:E.32 CA.2: 5 residues within 4Å: Chain A: D.57, D.59, N.61, T.63, E.68 3 PLIP interactions: 3 interactions with chain A Metal complexes: A:T.63, A:E.68, A:E.68 CA.3: 5 residues within 4Å: Chain D: D.21, D.23, D.25, T.27, E.32 4 PLIP interactions: 4 interactions with chain D Metal complexes: D:D.21, D:D.23, D:T.27, D:E.32 CA.4: 5 residues within 4Å: Chain D: D.57, D.59, N.61, T.63, E.68 3 PLIP interactions: 3 interactions with chain D Metal complexes: D:T.63, D:E.68, D:E.68 CA.5: 5 residues within 4Å: Chain E: D.21, D.23, D.25, T.27, E.32 4 PLIP interactions: 4 interactions with chain E Metal complexes: E:D.21, E:D.23, E:T.27, E:E.32 CA.6: 5 residues within 4Å: Chain E: D.57, D.59, N.61, T.63, E.68 3 PLIP interactions: 3 interactions with chain E Metal complexes: E:T.63, E:E.68, E:E.68 CA.7: 5 residues within 4Å: Chain F: D.21, D.23, D.25, T.27, E.32 4 PLIP interactions: 4 interactions with chain F Metal complexes: F:D.21, F:D.23, F:T.27, F:E.32 CA.8: 5 residues within 4Å: Chain F: D.57, D.59, N.61, T.63, E.68 3 PLIP interactions: 3 interactions with chain F Metal complexes: F:T.63, F:E.68, F:E.68

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Cui, C. et al., Mechanisms of KCNQ1 gating modulation by KCNE1/3 for cell-specific function. Cell Res. (2025)

Release Date

2025-08-20

Peptides

Calmodulin-1: ADEF
Potassium voltage-gated channel subfamily E member 1: BGHI
Potassium voltage-gated channel subfamily KQT member 1: CJKL

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
K

D
B

E
E

F
H

B
I

G
C

H
F

I
L

C
J

J
A

K
D

L
G

Membrane

We predict this structure to be a membrane protein.
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Calmodulin-1

Potassium voltage-gated channel subfamily E member 1

Potassium voltage-gated channel subfamily KQT member 1

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