Members of this family often annotated as Dienelactone hydrolases. However there are not many experimental data to support this. Although this family is distantly related to DLH, members have generaly a Serine instead of a cysteine in the position of the active site nucleophile residue as in DLH. The domain is found often in c-terminal of Phosphoribosyl transferase domain Pribosyltran (PF00156)