Ca2+-dependent proteolytic activity in crab claw muscle. Effects of inhibitors and specificity for myofibrillar proteins.


The claw closer muscle of the Bermuda land crab, Gecarcinus lateralis, undergoes a sequential atrophy and restoration during each molting cycle. We describe here the role of Ca2+-dependent proteinases in the turnover of myofibrillar protein in normal anecdysial (intermolt) claw muscle. Crab Ca2+-dependent proteinase degrades the myofibrillar proteins actin… (More)


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