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Relationship Among Fibre Type, Myosin ATPase Activity and Contractile Properties

Overview
Journal Histochem J
Specialty Biochemistry
Date 1982 Nov 1
PMID 6217171
Citations 2
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Abstract

At least two types of skeletal muscle myosin have been described which differ in ATPase activity and stability in alkaline or acidic media. Differences in ATPase characteristics distinguish Type I and Type II fibres histochemically. In this study, ATPase activity of myosin from muscles of several species with known histochemical and contractile properties has been determined to test the hypothesis that (1) myosin ATPase activity, (2) histochemical determination of fibre types and (3) maximum shortening velocity, all provide equivalent estimates of contractile properties in muscles of mixed fibre types. Maximum shortening velocity appears to be proportional to ATPase activity as expected from previous reports by Barany. However, both myosin ATPase and the maximum shortening velocity exhibit curvilinear relationships to the fraction of cross-sectional area occupied by Type II fibres. Therefore, we reject the hypothesis and conclude that histochemically determined myofibrillar ATPase does not accurately reflect the intrinsic ATPase activity or shortening velocity in muscles of mixed fibre types. Our data are consistent with the presence of more than two myosin isozymes or with a mixture of isozymes within single muscle fibres.

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References
1.
GAUTHIER G . On the localization of sarcotubular ATPase activity in mammaliam skeletal muscle. Histochemie. 1967; 11(2):97-111. DOI: 10.1007/BF00571715. View

2.
Murphy R, Beardsley A . Mechanical properties of the cat soleus muscle in situ. Am J Physiol. 1974; 227(5):1008-13. DOI: 10.1152/ajplegacy.1974.227.5.1008. View

3.
Lutz H, Weber H, Billeter R, Jenny E . Fast and slow myosin within single skeletal muscle fibres of adult rabbits. Nature. 1979; 281(5727):142-4. DOI: 10.1038/281142a0. View

4.
McCarter R, Radicke D, Yu B . A model preparation for studying fast mammalian skeletal muscles (39871). Proc Soc Exp Biol Med. 1977; 156(1):40-5. DOI: 10.3181/00379727-156-39871. View

5.
Brooke M, Kaiser K . Three "myosin adenosine triphosphatase" systems: the nature of their pH lability and sulfhydryl dependence. J Histochem Cytochem. 1970; 18(9):670-2. DOI: 10.1177/18.9.670. View