Myosin heavy chain isoform composition influences the susceptibility of actin-activated S1 ATPase and myofibrillar ATPase to pH inactivation.


The objectives of this study were to determine the influence of pH and MyHC isoforms on myofibrillar and actin-activated myosin subfragment 1 (S1) ATPase activity and the protective effect of actin. Red (RST) semitendinosus and white (WST) semitendinosus myofibrils were incubated at pH 7, 6, or 5.5 with 0 or 2mM ATP. RST and WST S1 isolates were incubated… (More)
DOI: 10.1016/j.meatsci.2005.04.014

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