Structure-Function Relationship of the Voltage-Gated Calcium Channel Cav1.1 Complex
Jianping Wu1,2, Nieng Yan1,2, Zhen Yan3,4
1State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences and School of Medicine, Tsinghua University, Beijing, China.
Structural insights into voltage-gated calcium (Cav) channels reveal the mechanism of skeletal muscle excitation-contraction coupling. The Cav1.1 channel structure provides a template for understanding Cav and Nav channel function and disease.
Area of Science:
- Molecular Biology
- Biophysics
- Structural Biology
Background:
- Voltage-gated calcium (Cav) channels are crucial for converting electrical signals into cellular responses.
- Cav1.1 is a key subtype in skeletal muscle excitation-contraction coupling and a model for Cav channel research.
Purpose of the Study:
- To summarize recent advances in the structural elucidation of the Cav1.1 channel.
- To provide mechanistic insights into excitation-contraction coupling based on high-resolution structural data.
Main Methods:
- Single-particle electron cryomicroscopy (cryo-EM) was used to determine the structure.
- Analysis of the 3.6 Å structure of the Cav1.1 complex.
Main Results:
- A high-resolution structure of the Cav1.1 channel complex was obtained.
- The structure provides a framework for understanding excitation-contraction coupling mechanisms.
Conclusions:
- The Cav1.1 structure offers mechanistic insights into skeletal muscle function.
- This structural template aids in interpreting the roles and diseases associated with Cav and Nav channels.
More Related Videos
11:42Reconstitution of a Transmembrane Protein, the Voltage-gated Ion Channel, KvAP, into Giant Unilamellar Vesicles for Microscopy and Patch Clamp Studies
Published on: January 22, 2015
07:31Profiling Voltage-gated Potassium Channel mRNA Expression in Nigral Neurons using Single-cell RT-PCR Techniques
Published on: September 27, 2011
Related Concept Videos
Voltage-gated Ion Channels
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several types of...
Non-gated Ion Channels
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism....
G-Protein Gated Ion Channels
Sensory...
Ligand-gated Ion Channels
Three Subfamilies of Ligand-gated Ion Channels
Ligand-gated ion channels fall into three subfamilies. The 'Cys-loop' includes the nicotinic acetylcholine receptors, γ-aminobutyric acid (GABA), glycine, and 5-hydroxytryptamine receptors. The second one is the 'Pore-loop' channels that...
Mechanically-gated Ion Channels
Ligand-Gated Ion Channel Receptor: Gating Mechanism
