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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10090039 | PMC |
| http://dx.doi.org/10.1038/s41421-023-00530-6 | DOI Listing |
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Identification of "modified OPDA (mo-OPDA)" as a Michael adduct of cis-OPDA.
Biosci Biotechnol Biochem
July 2024
Graduate School of Science, Tohoku University, Sendai, Japan.
cis-(+)-12-Oxo-phytodienoic acid (cis-OPDA) is a significant plant oxylipin, known as a biosynthetic precursor of the plant hormone jasmonoyl-l-isoleucine (JA-Ile), and a bioactive substance in plant environmental stresses. A recent study showed that a plant dioxygenase, Jasmonate Induced Dioxygenase 1 (JID1), converts cis-OPDA into an unidentified metabolite termed "modified-OPDA (mo-OPDA)" in Arabidopsis thaliana. Here, using ultra-performance liquid chromatography coupled with triple quad mass spectrometry (UPLC-MS/MS) experiment, the chemical identity of "mo-OPDA" was demonstrated and identified as a conjugate between cis-OPDA and 2-mercaptoethanol (cis-OPDA-2ME), an artifact produced by Michael addition during the JID1 digestion of cis-OPDA.
View Article and Find Full Text PDFDioxygenase JID1 mediates the modification of OPDA to regulate jasmonate homeostasis.
Cell Discov
April 2023
Tsinghua-Peking Center for Life Science, and MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China.