
TY  - JOUR
A1  - O'Shea, JM 
A1  - Horgan, DJ 
A1  - JMacfarlane, J 
T1  - Some Effects of Pressure Treatment on Actomyosin Systems
JF  - Australian Journal of Biological Sciences
JO  - Aust. Jnl. Of Bio. Sci.
Y1  - 1976
VL  - 29
IS  - 3
SP  - 197
EP  - 208
KW  - 
UR  - https://doi.org/10.1071/BI9760197 
N2  - Natural actomyosin, actin and myosin, have been pressurized at up to 150 MN/m2 for 1 h at O°C and examined 3-5 h later. Pressurization of myosin resulted in the formation of aggregates with a molecular weight approximately that expected for a dimer, whereas with F-actin depolymerization occurred. With actomyosin, a gel to sol transition was promoted. Viscosity and light-scattering measurements indicated that pressurization results in a large measure of disaggregation of actomyosin in solution. Pressurization of actomyosin resulted in a greater decrease in the calcium-sensitive, than in the calcium-independent, Mg2+ ATPase activity. The Ca2+ and K+-EDTA ATPase activities of myosin were inhibited to about the same extent. 
ER  -

