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A family of α/β hydrolases removes phytol from chlorophyll metabolites for tocopherol biosynthesis in Arabidopsis.

The Plant cell - 13 Feb 2025

Bao Yan, Magallanes-Lundback Maria, Kim Sung Soo, Deason Nicholas, Niu Yue, Johnny Cassandra, Froehlich John, DellaPenna Dean

Abstract excerpt

Tocopherol synthesis requires phytyl diphosphate derived from phytol esterified to chlorophyll metabolites. The >600-member Arabidopsis thaliana α/β hydrolase (ABH) gene family contains 4 members that can release phytol from chlorophyll metabolites in vitro; however, only pheophytinase (PPH) affects tocopherol synthesis when mutated, reducing seed tocopherols by 5%. We report the biochemical analysis of 2...

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Identifiers

PMID: 40036548
DOI: 10.1093/plcell/koaf021
PMCID: PMC11878634

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