What question did this study set out to answer?

This research aims to compare the properties of myosin from red and white skeletal muscles in rabbits, focusing on adenosine triphosphatase activity and structural differences.

December 1, 1966Journal of Biological ChemistryOpen Access

Studies on Myosin from Red and White Skeletal Muscles of the Rabbit

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This research aims to compare the properties of myosin from red and white skeletal muscles in rabbits, focusing on adenosine triphosphatase activity and structural differences.
Measured adenosine triphosphatase activity in myosin from red and white skeletal muscles.
Examined the activation by sulfhydryl reagents at varying ionic strengths.
Assessed tryptic digestion rates and required reagents for activation.
Myosin from red muscle exhibits lower adenosine triphosphatase activity than from white muscle.
Higher activation energy observed in the calcium-activated reaction of red muscle myosin (exact values not provided).
Four moles of p-chloromercuribenzoate are needed for maximal activation of red muscle myosin compared to two moles for white muscle myosin.

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Implication

In vitro rabbit myosin ATPase differences should not inform clinical decisions; leaves open isoform variability in human cardiac muscle.

Cite This Study

Sréter et al. (1966) studied this question.

synapsesocial.com/papers/6a71c07526770c2b8de137c5 https://doi.org/10.1016/s0021-9258(18)96339-8

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Studies on Myosin from Red and White Skeletal Muscles of the Rabbit

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Discussion

Implication

Cite This Study

Studies on Myosin from Red and White Skeletal Muscles of the Rabbit

Key Points

Discussion

Implication

Cite This Study

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