Any enzyme that catalyzes the apparent migration of groups within one molecule, e.g., phosphoglycerate phosphomutase; sometimes the transfer is from one molecule to another, e.g., phosphoglucomutase, phosphoglyceromutase (both phosphotransferases).
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mu·tase 'myü-.tās, -.tāz n any of various enzymes that catalyze molecular rearrangements and esp. those involving the transfer of phosphate from one hydroxyl group to another in the same molecule
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mu·tase (muґtās) [EC 5.4] any member of a subclass of enzymes of the isomerase class that act as intramolecular transferases, catalyzing the intramolecular shift of an acyl, amino, phosphate, or other chemical group.Medical dictionary. 2011.