Liha töötlemine
In postmortem muscle, these bonds are irre- phate (AMP). Since the availability of ATP
versible and are also known as rigor bonds, is central to survival of the cell, there is a
as they are the genesis of the stiffness (rigor) highly coordinated effort by the cell to main-
that develops in postmortem muscle. The tain its production in both living tissue and
globular head of myosin also has enzymatic in the very early postmortem period.
activity; it can hydrolyze ATP and liberate Muscular activity is dependent on ample
energy. In living muscle during contraction, supplies of ATP within the muscle. Since it
the ATPase activity of myosin provides is so vital, muscle cells have developed
energy for myosin bound to actin to swivel several ways of producing/regenerating ATP.
and ultimately pull the thin filaments toward Muscle can use energy precursors stored in
the center of the sarcomere
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