<enzyme> An enzyme that catalyses the reversible conversion of an epimer into its counterpart form. ... (09 Oct 1997) ... 
(ә-pim´ә-rās) an isomerase enzyme that catalyzes a change in asymmetric groups in substrates (epimers) that have more than one center of asymmetry.
Type: Term Pronunciation: ĕpim′ĕr-ās Definitions: 1. A class of enzymes catalyzing epimeric changes.