intramolecular oxidoreductase activity, transposing C=C bonds vinylacetyl-CoA delta-isomerase activity https://github.com/geneontology/go-ontology/issues/30193 MetaCyc:VINYLACETYL-COA-DELTA-ISOMERASE-RXN vinylacetyl coenzyme A delta-isomerase activity vinylacetyl coenzyme A isomerase activity vinylacetyl-CoA D-isomerase activity GO:0050393 vinylacetyl-CoA delta3-delta2-isomerase activity EC:5.3.3.3 KEGG_REACTION:R03031 molecular_function RHEA:10572 Catalysis of the reaction: vinylacetyl-CoA = (2E)-butenoyl-CoA. delta3-cis-delta2-trans-enoyl-CoA isomerase