Sensing Sulfur Conditions： Simple to Complex Protein Regulatory Mechanisms in Plant Thiol Metabolism

Sulfur is essential for plant growth and development, and the molecular systems for maintaining sulfur and thiol metabolism are tightly controlled. From a biochemical perspective, the regulation of plant thiol metabolism high- lights nature＇s ability to engineer pathways that respond to multiple inp...

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Bibliographic Details
Published in:Molecular plant 2010-03, Vol.3 (2), p.269-279
Main Authors: Yi, Hankuil, Galant, Ashley, Ravilious, Geoffrey E., Preuss, Mary L., Jez, Joseph M.
Format: Article
Language:chi ; eng
Subjects:
Enzymology
metabolic regulation
Models, Biological
Plant Proteins - chemistry
Plant Proteins - genetics
Plant Proteins - metabolism
Plants - genetics
Plants - metabolism
primary metabolism
protein structure
Sulfhydryl Compounds - metabolism
Sulfur - metabolism
分子检测
巯基
植物蛋白
热力学性质
硫代谢
硫磺
调控机制
遥感
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Summary:Sulfur is essential for plant growth and development, and the molecular systems for maintaining sulfur and thiol metabolism are tightly controlled. From a biochemical perspective, the regulation of plant thiol metabolism high- lights nature＇s ability to engineer pathways that respond to multiple inputs and cellular demands under a range of con- ditions. In this review, we focus on the regulatory mechanisms that form the molecular basis of biochemical sulfur sensing in plants by translating the intracellular concentration of sulfur-containing compounds into control of key metabolic steps. These mechanisms range from the simple （substrate availability, thermodynamic properties of reactions, feedback inhi- bition, and organelle localization） to the elaborate （formation of multienzyme complexes and thiol-based redox switches）. Ultimately, the dynamic interplay of these regulatory systems is critical for sensing and maintaining sulfur assimilation and thiol metabolism in plants.
ISSN:1674-2052
1752-9867
DOI:10.1093/mp/ssp112