Rabbit muscle phosphoglycerate mutase is inactivated by proteolysis with thermolysin. Inactivation is correlated with the breakage of one (or a few) bond(s) near one end of the polypeptide chain. There is no change in the overall conformation, quaternary structure or binding to Cibacron Blue on proteolysis. The possible analogy with the existence of a flexible tail in the yeast enzyme is discussed.
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Price et al. (1985) studied this question.
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