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Quantification of calsequestrin 2 (CSQ2) in sheep cardiac muscle and Ca 2+ -binding protein changes in CSQ2 knockout mice

Murphy, Robyn; Mollica, Janelle P; Beard, Nicole; Knollmann, Bjorn C; Lamb, Graham


Calsequestrin 2 (CSQ2) is generally regarded as the primary Ca2+-buffering molecule present inside the sarcoplasmic reticulum (SR) in cardiac cells, but findings from CSQ2 knockout experiments raise major questions about its role and necessity. This study determined the absolute amount of CSQ2 present in cardiac ventricular muscle to gauge its likely influence on SR free Ca2+ concentration ([Ca2+]) and maximal Ca2+ capacity. Ventricular tissue from hearts of freshly killed sheep was examined by...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: American Journal of Physiology: Heart and Circulatory Physiology
DOI: 10.1152/ajpheart.00902.2010


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