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: 4.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 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
  • Primary Citation of Related Structures:  
    3JBR

  • 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 Ca(v)1 ...

    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. nyan@tsinghua.edu.cn.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Voltage-dependent L-type calcium channel subunit alpha-1SA1,873Oryctolagus cuniculusMutation(s): 0 
Gene Names: CACNA1S, CACH1, CACNL1A3
Membrane Entity: Yes 
UniProt
Find proteins for P07293 (Oryctolagus cuniculus)
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UniProt GroupP07293
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Voltage-dependent L-type calcium channel subunit beta-2B356Rattus norvegicusMutation(s): 0 
Gene Names: Cacnb2, Cacnlb2
Membrane Entity: Yes 
UniProt
Find proteins for Q8VGC3 (Rattus norvegicus)
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UniProt GroupQ8VGC3
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Voltage-dependent calcium channel gamma-1 subunitC [auth E]222Oryctolagus cuniculusMutation(s): 0 
Gene Names: CACNG1, CACNLG
Membrane Entity: Yes 
UniProt
Find proteins for P19518 (Oryctolagus cuniculus)
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UniProt GroupP19518
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Voltage-dependent calcium channel subunit alpha-2/delta-1D [auth F]1,106Oryctolagus cuniculusMutation(s): 0 
Gene Names: CACNA2D1, CACNL2A, CCHL2A
Membrane Entity: Yes 
UniProt
Find proteins for P13806 (Oryctolagus cuniculus)
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UniProt GroupP13806
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Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG
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F,
G [auth F],
H [auth F],
I [auth F],
J [auth F],
F,
G [auth F],
H [auth F],
I [auth F],
J [auth F],
K [auth F],
L [auth F],
M [auth F],
N [auth F],
O [auth F],
P [auth F],
Q [auth F],
R [auth F],
S [auth F],
T [auth F]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
BMA
Query on BMA
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U [auth F],
V [auth F]		beta-D-mannopyranose
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N		 Ligand Interaction
CA
Query on CA
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E [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-30
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Data collection, Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary