Table 1

Effects of eudistomin M (10−4 M) on various ATPase activities from rabbit skeletal muscle

EnzymeChange in Enzyme Activity (%)1-a
Myosin K+-EDTA-ATPase−8.8  ± 2.2
Ca++-ATPase10.5  ± 2.7
Mg++-ATPase−5.7  ± 3.0
Myosin + actin−2.2  ± 0.5
Myosin + actin + troponin5.1  ± 3.4
Myosin + actin + troponin + tropomyosin28.8  ± 0.71-b
SR Ca2+-ATPase−5.4  ± 1.3

  • ↵1-a Mean ± S.E.M. (n = 3).

  • ↵1-b Significantly higher than the absence of eudistomin M, P < .05.