THE INFLUENCE OF MECHANICAL EFFECTS ON ACTOMYOSIN (MECHANICAL EFFECT ON ACTOMYOSIN).
Figs. refs. omitted,
NAVAL MEDICAL SCHOOL BETHESDA MD TRANSLATION SERVICE
Pagination or Media Count:
It is shown that slight exposures to an ultra sound field produces in actomyosin solutions a number of essential changes, to wit irreversible drop of ATP-phasic activity decrease in SH-group content, diminution of characteristical viscosity and of molecular weight. The effect of deep freezing -196C results in precipitation of portion of protein. At the same time, in the remaining liquid phase, the ATP-phasic activity and the SH-group content are practically unchanged. The characteristical viscosity increases under the effect of freezing, whereas the molecular weight drops. The ultra sound effect causes changes in the primary and, probably, also in the secondary structure of actomyosin. On the other hand, the effect of cold, apparently, does not affect the primary structure of protein and, in contrast to the effect of the ultra sound, produces increased general asymmetry of the macromolecules. Author