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Abstract

We identify an Arabidopsis pyridoxal-phosphate-dependent aminotransferase, VAS1, whose loss-of-function simultaneously increases amounts of the phytohormone auxin and the ethylene precursor 1-aminocyclopropane-1-carboxylate. VAS1 uses the ethylene biosynthetic intermediate methionine as an amino donor and the auxin biosynthetic intermediate indole-3-pyruvic acid as an amino acceptor to produce L-tryptophan and 2-oxo-4-methylthiobutyric acid. Our data indicate that VAS1 serves key roles in coordinating the amounts of these two vital hormones.

Published in

Nature Chemical Biology
2013, volume: 9, number: 4, pages: 244-246
Publisher: NATURE PUBLISHING GROUP

SLU Authors

UKÄ Subject classification

Developmental Biology

Publication identifier

  • DOI: https://doi.org/10.1038/NCHEMBIO.1178

Permanent link to this page (URI)

https://res.slu.se/id/publ/41643