3JBR

Cryo-EM structure of the rabbit voltage-gated calcium channel Cav1.1 complex at 4.2 angstrom


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure of the voltage-gated calcium channel Cav1.1 complex

Wu, J.P.Yan, Z.Li, Z.Q.Yan, C.G.Lu, S.Dong, M.Q.Yan, N.

(2015) Science 350: aad2395-aad2395

  • DOI: 10.1126/science.aad2395
  • Also Cited By: 6BYO

  • PubMed Abstract: 
  • The voltage-gated calcium channel Ca(v)1.1 is engaged in the excitation-contraction coupling of skeletal muscles. The Ca(v)1.1 complex consists of the pore-forming subunit α1 and auxiliary subunits α2δ, β, and γ. We report the structure of the rabbit ...

    The voltage-gated calcium channel Ca(v)1.1 is engaged in the excitation-contraction coupling of skeletal muscles. The Ca(v)1.1 complex consists of the pore-forming subunit α1 and auxiliary subunits α2δ, β, and γ. We report the structure of the rabbit Ca(v)1.1 complex determined by single-particle cryo-electron microscopy. The four homologous repeats of the α1 subunit are arranged clockwise in the extracellular view. The γ subunit, whose structure resembles claudins, interacts with the voltage-sensing domain of repeat IV (VSD(IV)), whereas the cytosolic β subunit is located adjacent to VSD(II) of α1. The α2 subunit interacts with the extracellular loops of repeats I to III through its VWA and Cache1 domains. The structure reveals the architecture of a prototypical eukaryotic Ca(v) channel and provides a framework for understanding the function and disease mechanisms of Ca(v) and Na(v) channels.


    Organizational Affiliation

    State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China. Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China. Center for Structural Biology, School of Life Sciences and School of Medicine, Tsinghua University, Beijing 100084, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Voltage-dependent L-type calcium channel subunit alpha-1S
A
1873Oryctolagus cuniculusMutation(s): 0 
Gene Names: CACNA1S (CACH1, CACNL1A3)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Calcium Ion-Selective
Protein: 
CaV1.1 voltage-gated calcium channel
Find proteins for P07293 (Oryctolagus cuniculus)
Go to Gene View: CACNA1S
Go to UniProtKB:  P07293
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Voltage-dependent L-type calcium channel subunit beta-2
B
356Rattus norvegicusMutation(s): 0 
Gene Names: Cacnb2 (Cacnlb2)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Calcium Ion-Selective
Protein: 
CaV1.1 voltage-gated calcium channel
Find proteins for Q8VGC3 (Rattus norvegicus)
Go to UniProtKB:  Q8VGC3
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Voltage-dependent calcium channel gamma-1 subunit
E
222Oryctolagus cuniculusMutation(s): 0 
Gene Names: CACNG1 (CACNLG)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Calcium Ion-Selective
Protein: 
CaV1.1 voltage-gated calcium channel
Find proteins for P19518 (Oryctolagus cuniculus)
Go to Gene View: CACNG1
Go to UniProtKB:  P19518
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Voltage-dependent calcium channel subunit alpha-2/delta-1
F
1106Oryctolagus cuniculusMutation(s): 0 
Gene Names: CACNA2D1 (CACNL2A, CCHL2A)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Calcium Ion-Selective
Protein: 
CaV1.1 voltage-gated calcium channel
Find proteins for P13806 (Oryctolagus cuniculus)
Go to Gene View: CACNA2D1
Go to UniProtKB:  P13806
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
F
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
F
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
A, F
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-12-30
    Type: Initial release