Isolation and identification of aliphatic short-chain acylcarnitines from beef heart: possible role for carnitine in branched-chain amino acid metabolism.
Aliphatic acylearnitines isolated from a water-soluble fraction of beef heart have been characterized by gas chromatography and mass spectrometry. The following acyl residues derived from the acylcarnitine fraction were unequivocally identified: acetyl, propionyl, isobutyryl, butyryl, alpha-methylbutyryl, valeryl, isovaleryl, tiglyl, and caproyl. beta-methylcrotonyl and methacrylyl were tentatively identified. This occurrence of considerable quantities of branched-chain acylcarnitines indicates a role for carnitine in branched-chain amino acid metabolism.
D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D002331:Carnitine / Q000031:analogs & derivatives* / Q000032:analysis / Q000378:metabolism; D002333:Carnitine Acyltransferases / Q000378:metabolism; D002417:Cattle; D013058:Mass Spectrometry; D009206:Myocardium / Q000032:analysis*
D000596:Amino Acids; D002333:Carnitine Acyltransferases; D002331:Carnitine
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