In some instance 3-oxoadipate enol-lactonase is fused to 4-carboxymucolactone- decarboxylase, which acts on the same pathway but this enzyme belongs to CMD IPR003779 PF02627 and is not related to alpha/beta hydrolase see Eulberg et al. 1998, see Schlomann et al. 1994 fo a review on the pathway. For bacterial enzymes, this family corresponds to family V.2 of the classification of Arpigny and Jaeger 1999
