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S-sulfocysteine synthase function in sensing chloroplast redox status

 

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Author: Gotor Martínez, Cecilia
Romero González, Luis Carlos
Department: Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
Date: 2013
Published in: Plant Signaling and Behavior, 8 (3), e23313-1-e23313-3.
Document type: Article
Abstract: The minor chloroplastic O-acetylserine(thiol)lyase isoform encoded by the CS26 gene in Arabidopsis thaliana has been described as an S-sulfocysteine synthase enzyme that plays an important role in chloroplast function. This enzyme is located in the thylakoid lumen, and its S-sulfocysteine activity is essential for the proper photosynthetic performance of the chloroplast under long-day growth conditions. Based on the present knowledge of this enzyme, we suggest that S-sulfocysteine synthase functions as a protein sensor to detect the accumulation of thiosulfate as a result of the inadequate detoxification of reactive oxygen species generated under conditions of excess light to produce the S-sulfocysteine molecule that triggers protection mechanisms of the photosynthetic apparatus.
Cite: Gotor Martínez, C. y Romero González, L.C. (2013). S-sulfocysteine synthase function in sensing chloroplast redox status. Plant Signaling and Behavior, 8 (3), e23313-1-e23313-3.
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Format: Microsoft Word 2007

URI: https://hdl.handle.net/11441/84508

DOI: 10.4161/psb.23313

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