We produced a single deuterated lachrymatory factor (propanthial S-oxide, m/z=91) in a model reaction system comprising purified alliinase, lachrymatory factor synthase (LFS), and (E)-(+)-S-(1-propenyl)-L-cysteine sulfoxide ((E)-PRENCSO) in D2O. Onion LFS reacted with the degraded products of (E)-PRENCSO by alliinase, but not with those of (Z)-PRENCSO. These findings indicate that onion LFS is an (E)-1-propenylsulfenic acid isomerase.
Bioscience, Biotechnology, and Biochemistry
Volume 76, 2012 - Issue 9
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Related Research Data
S-Alk(en)ylcysteine sulfoxides in the genus Allium: proposed biosynthesis, chemical conversion, and bioactivities
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