title: Succinyl-CoA:3-ketoacid coenzyme A transferase (SCOT): development of an antibody to human SCOT and diagnostic use in hereditary SCOT deficiency.
abstract: Succinyl-CoA:3-ketoacid CoA transferase (SCOT) is a key enzyme for ketone body utilization. Hereditary SCOT deficiency in humans (McKusick catalogue number 245050) is characterized by intermittent ketoacidotic attacks and permanent hyperketonemia. Since previously-available antibody to rat SCOT did not crossreact with human SCOT, we developed an antibody against recombinant human SCOT expressed in a bacterial system. The recombinant SCOT was insoluble except under denaturing conditions. Antibody raised to this polypeptide recognized denatured SCOT and proved useful for immunoblot analysis. On immunoblots, SCOT was easily detectable in control fibroblasts and lymphocytes but was detected neither in fibroblast extracts from four SCOT-deficient patients, nor in lymphocytes from two SCOT-deficient patients. These data indicate that immunoblot analysis is useful for diagnosis of SCOT deficiency in combination with enzyme assay.
authors.affiliation: Department of Pediatrics, Gifu University School of Medicine, Japan.
authors.forename: X Q
authors.initials: XQ
authors.lastname: Song
authors.forename: T
authors.initials: T
authors.lastname: Fukao
authors.forename: G A
authors.initials: GA
authors.lastname: Mitchell
authors.forename: S
authors.initials: S
authors.lastname: Kassovska-Bratinova
authors.forename: M
authors.initials: M
authors.lastname: Ugarte
authors.forename: R J
authors.initials: RJ
authors.lastname: Wanders
authors.forename: K
authors.initials: K
authors.lastname: Hirayama
authors.forename: H
authors.initials: H
authors.lastname: Shintaku
authors.forename: P
authors.initials: P
authors.lastname: Churchill
authors.forename: H
authors.initials: H
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Orii
authors.forename: N
authors.initials: N
authors.lastname: Kondo
mesh_terms: D000818:Animals; D015153:Blotting, Western; D015256:Coenzyme A-Transferases / Q000172:deficiency* / Q000276:immunology; D006801:Humans; D007118:Immunoassay / Q000379:methods; D007657:Ketone Bodies / Q000378:metabolism*; D008052:Lipid Metabolism, Inborn Errors / Q000175:diagnosis* / Q000201:enzymology; D051381:Rats; D011994:Recombinant Proteins / Q000276:immunology
chemical_list: D007657:Ketone Bodies; D011994:Recombinant Proteins; D015256:Coenzyme A-Transferases; C021460:3-ketoacid CoA-transferase