Plays a role in ketone body metabolism (By similarity). Has an effect on lysosome related organelles (LRO) function, in a pathway with serotonin (PubMed:24204312). Acts downstream of sir-2.1 to regulate aging and stress resistance (PubMed:20956318). Expressed in intestine from late embryogenesis onwards, and in the body wall muscle and pharynx from L2 onwards. Animals have a shortened lifespan and exhibit early behavioral decline characterized by the premature onset of uncoordinated locomotion and paralysis. Belongs to the thiolase-like superfamily. Thiolase family.