Ca(2+) regulation in the na(+)/ca(2+) exchanger involves two markedly different ca(2+) sensors
Hilge, M., Aelen, J., Vuister, G.W.(2006) Mol Cell 22: 15-25
- PubMed: 16600866 
- DOI: 10.1016/j.molcel.2006.03.008
- Primary Citation of Related Structures:  
2FWS, 2FWU - PubMed Abstract: 
The plasma membrane Na+/Ca2+ exchanger (NCX) is almost certainly the major Ca2+ extrusion mechanism in cardiac myocytes. Binding of Na+ and Ca2+ ions to its large cytosolic loop regulates ion transport of the exchanger. We determined the solution structures of two Ca2+ binding domains (CBD1 and CBD2) that, together with an alpha-catenin-like domain (CLD), form the regulatory exchanger loop ...