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The Pseudoenzyme β-Amylase9 From Arabidopsis Activates α-Amylase3: A Possible Mechanism to Promote Stress-Induced Starch Degradation.

Proteins - 1 Jun 2025

Berndsen Christopher E, Storm Amanda R, Sardelli Angelina M, Hossain Sheikh R, Clermont Kristen R, McFather Luke M, Connor Mafe A, Monroe Jonathan D

Abstract excerpt

Starch accumulation in plants provides carbon for nighttime use, for regrowth after periods of dormancy, and for times of stress. Both ɑ- and β-amylases (AMYs and BAMs, respectively) catalyze starch hydrolysis, but their functional roles are unclear. Moreover, the presence of catalytically inactive amylases that show starch excess phenotypes when deleted presents questions on how starch degradation is regulated....

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PMID: 39846389
DOI: 10.1002/prot.26803
PMCID: PMC12046210

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