_:vb50937446 . _:vb50937446 . _:vb50937446 . _:vb50937446 "url:http://en.wikipedia.org/wiki/3-Methylcrotonyl-CoA_carboxylase_deficiency"^^ . _:vb50937446 . _:vb50937446 . _:vb50937446 . _:vb50937446 "An amino acid metabolic disorder that is classified by inadequate levels of the enzyme 3-methylcrotonyl-CoA carboxylase that helps break down proteins containing the amino acid leucine. This disease has_symptom muscular hypotonia (weak muscle tone), has_symptom muscular atrophy, has_symptom feeding difficulties, has_symptom recurrent episodes of vomiting and diarrhea, and has_symptom lethargy."^^ . _:vb50937446 "url:http://omim.org/entry/210200"^^ .