[{"from": "human", "value": "Provide a brief overview of this molecule. [C][/C][=Branch1][#Branch1][=C][\\C][=Branch1][C][=O][O][/C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an intermediate (as the CoA thioester) in the leucine degradative pathway as well as the mevalonate shunt, a pathway that links isoprenoid metabolism with mitochondrial acetyl-CoA metabolism.  3-methylglutaconyl-CoA hydratase is involved in the metabolism process of 3-methylglutaconic acid. 3-Methylglutaconic acid accumulates in patients with a deficiency of this enzyme and a large amount of 3-methylglutaconic acid appear in urine. . (A3360)."}]