SMTL ID : 5vms.1 (2 other biounits)

CryoEM structure of Xenopus KCNQ1 channel

Coordinates

PDB Format

Method

ELECTRON MICROSCOPY 3.70 Å

Oligo State

hetero-4-4-mer

Ligands

12 x CA: CALCIUM ION(Non-covalent)

CA.1: 3 residues within 4Å: Chain B: D.21, D.23, T.27 2 PLIP interactions: 2 interactions with chain B Metal complexes: B:D.21, B:T.27 CA.2: 4 residues within 4Å: Chain B: D.59, N.61, T.63, D.65 1 PLIP interactions: 1 interactions with chain B Metal complexes: B:T.63 CA.3: 3 residues within 4Å: Chain B: D.132, D.134, Q.136 1 PLIP interactions: 1 interactions with chain B Metal complexes: B:D.134 CA.4: 3 residues within 4Å: Chain D: D.21, D.23, T.27 2 PLIP interactions: 2 interactions with chain D Metal complexes: D:D.21, D:T.27 CA.5: 4 residues within 4Å: Chain D: D.59, N.61, T.63, D.65 1 PLIP interactions: 1 interactions with chain D Metal complexes: D:T.63 CA.6: 3 residues within 4Å: Chain D: D.132, D.134, Q.136 1 PLIP interactions: 1 interactions with chain D Metal complexes: D:D.134 CA.7: 3 residues within 4Å: Chain F: D.21, D.23, T.27 2 PLIP interactions: 2 interactions with chain F Metal complexes: F:D.21, F:T.27 CA.8: 4 residues within 4Å: Chain F: D.59, N.61, T.63, D.65 1 PLIP interactions: 1 interactions with chain F Metal complexes: F:T.63 CA.9: 3 residues within 4Å: Chain F: D.132, D.134, Q.136 1 PLIP interactions: 1 interactions with chain F Metal complexes: F:D.134 CA.10: 3 residues within 4Å: Chain H: D.21, D.23, T.27 2 PLIP interactions: 2 interactions with chain H Metal complexes: H:D.21, H:T.27 CA.11: 4 residues within 4Å: Chain H: D.59, N.61, T.63, D.65 1 PLIP interactions: 1 interactions with chain H Metal complexes: H:T.63 CA.12: 3 residues within 4Å: Chain H: D.132, D.134, Q.136 1 PLIP interactions: 1 interactions with chain H Metal complexes: H:D.134

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Sun, J. et al., Cryo-EM Structure of a KCNQ1/CaM Complex Reveals Insights into Congenital Long QT Syndrome. Cell (2017)

Release Date

2017-06-07

Peptides

Potassium voltage-gated channel subfamily KQT member 1: ACEG
Calmodulin: BDFH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

C
A

E
A

G
A

B
B

D
B

F
B

H
B

Membrane

We predict this structure to be a membrane protein.
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Potassium voltage-gated channel subfamily KQT member 1

Calmodulin

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