mutasen.
/ˈmjuːteɪz/, U.S. /ˈmjuˌteɪz/, /ˈmjuˌteɪs/ Biochemistry.
1. An enzyme which catalyses a dismutation reaction. Now called dismutase.
ΚΠ
1914 Chem. Abstr. 8 3051 It is shown by means of a typical dehydrase, Schardinger's milk enzyme, that oxidase, reductase and mutase are 1 and the same enzyme.
1930 Q. Rev. Biol. 5 338/2 In this way is brought about what is termed a mutase effect, or a ‘disproportionation’.
1943 J. B. Sumner & G. F. Somers Chem. & Methods of Enzymes xvii. 298 Aldehyde mutase brings about the Cannizzaro reaction. Here, two molecules of an aldehyde undergo an oxido-reduction.
1947 E. Baldwin Dynamic Aspects Biochem. iv. 144 Where such a true dismutation is catalysed by a single enzyme the latter is known as a mutase.
2. An enzyme which catalyses the transfer of a phosphate or other group from one carbon atom to another within a molecule.
ΚΠ
1938 Jrnl. Biol. Chem. 124 552 Mannose-1-phosphate and galactose-1-phosphate, synthetically prepared, were not converted to the respective 6-esters by muscle, liver, or yeast mutase.
1970 R. W. McGilvery Biochemistry xv. 292 The sequence begins by a freely reversible mutase reaction, in which the phosphate group of glucose-6-phosphate is transferred to form glucose-1-phosphate.
1988 BioFactors 1 267/1 They are good substrates for several enzymes that do not attack the thiolester group (carboxylases, mutases, dehydrogenases, epimerases, etc.).
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).
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