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Published on: September 22, 2011
20 years from NCX purification and cloning: milestones
Debora A Nicoll1, Michela Ottolia, Joshua I Goldhaber
1Department of Physiology and Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095-1760, USA.
Advances in Experimental Medicine and Biology
|December 11, 2012
Summary
The sodium-calcium exchanger (NCX) protein
Area of Science:
- Molecular biology
- Cardiovascular physiology
- Protein structure and function
Background:
- The sodium-calcium exchanger (NCX) protein was isolated in 1988 and cloned in 1990.
- This enabled detailed molecular-level investigations into sodium-calcium exchange.
Observation:
- Structure-function studies determined transmembrane segments and topology.
- Site-directed mutagenesis identified ion transport sites.
- Calcium regulation regions were identified, analyzed, and crystallized.
Findings:
- Genetically altered mice models were developed to study NCX's role in the myocardium.
- Atrial- or ventricular-specific NCX knockout mice revealed new insights.
- NCX's function in excitation-contraction coupling and cardiac pacemaker activity was elucidated.
Implications:
- Understanding NCX molecular mechanisms aids in developing targeted therapies.
- Insights into NCX function in cardiac physiology can inform treatments for heart conditions.
- Further research on NCX may uncover novel therapeutic targets for cardiovascular diseases.
