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n. One of a group of enzymes that catalyzes the conversion of one isomer into another.

n. Any enzyme which catalyzes the conversion of one isomeric form of a chemical compound to another.

n. an enzyme that catalyzes its substrate to an isomeric form

"The specificity of glucose-6-P isomerase is unusual."

enzyme   

dehydrogenase    isomerization    oxidase    ceruloplasmin    dismutase