Lanthionine detected in human urine.
Lanthionine has been detected incidentally in the urine of a patient with an abdominal pseudo-tumor, possibly caused by a Yersinia infection. The L- and/or D-form together with the meso-form were present. The identity of the amino acid was confirmed by GC-MS of the N-trifluoroacetyl methyl ester derivative. The abnormal amino acid was thought to be not of endogenous origin. The possibility that it was produced by gut bacteria is considered.
D000409:Alanine / Q000031:analogs & derivatives* / Q000652:urine; D000603:Amino Acids, Sulfur / Q000652:urine; D002849:Chromatography, Gas; D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D006801:Humans; D013058:Mass Spectrometry; D008722:Methods; D013440:Sulfides
D000603:Amino Acids, Sulfur; D013440:Sulfides; C001520:lanthionine; D000409:Alanine