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Low abundance does not mean less importance in cysteine metabolism.
Plant Signal Behav 2010; 5(8):1028-30PS

Abstract

The cysteine molecule plays an essential role in cells because it is part of proteins and because it functions as a reduced sulfur donor molecule. In addition, the cysteine molecule may also play a role in the redox signaling of different stress processes. Even though the synthesis of cysteine by the most abundant of the isoforms of O-acetylserine(thiol)lyase in the chloroplast, the mitochondria and the cytosol is relatively well-understood, the role of the other less common isoforms homologous to O-acetylserine(thiol)lyase is unknown. Several studies on two of these isoforms, one located in the cytosol and the other one in the chloroplast, have shown that while one isoform operates with a desulfhydrase activity and is essential to regulate the homeostasis of cysteine in the cytosol, the other, located in the chloroplast, synthesizes S-sulfocysteine. This metabolite appears to be essential for the redox regulation of the chloroplast under certain lighting conditions.

Authors+Show Affiliations

Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Sevilla, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20699647

Citation

Gotor, Cecilia, et al. "Low Abundance Does Not Mean Less Importance in Cysteine Metabolism." Plant Signaling & Behavior, vol. 5, no. 8, 2010, pp. 1028-30.
Gotor C, Alvarez C, Bermúdez MA, et al. Low abundance does not mean less importance in cysteine metabolism. Plant Signal Behav. 2010;5(8):1028-30.
Gotor, C., Alvarez, C., Bermúdez, M. A., Moreno, I., García, I., & Romero, L. C. (2010). Low abundance does not mean less importance in cysteine metabolism. Plant Signaling & Behavior, 5(8), pp. 1028-30. doi:10.1105/tpc.109.071985.
Gotor C, et al. Low Abundance Does Not Mean Less Importance in Cysteine Metabolism. Plant Signal Behav. 2010;5(8):1028-30. PubMed PMID: 20699647.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Low abundance does not mean less importance in cysteine metabolism. AU - Gotor,Cecilia, AU - Alvarez,Consolación, AU - Bermúdez,M Angeles, AU - Moreno,Inmaculada, AU - García,Irene, AU - Romero,Luis C, Y1 - 2010/08/01/ PY - 2010/8/12/entrez PY - 2010/8/12/pubmed PY - 2011/10/18/medline SP - 1028 EP - 30 JF - Plant signaling & behavior JO - Plant Signal Behav VL - 5 IS - 8 N2 - The cysteine molecule plays an essential role in cells because it is part of proteins and because it functions as a reduced sulfur donor molecule. In addition, the cysteine molecule may also play a role in the redox signaling of different stress processes. Even though the synthesis of cysteine by the most abundant of the isoforms of O-acetylserine(thiol)lyase in the chloroplast, the mitochondria and the cytosol is relatively well-understood, the role of the other less common isoforms homologous to O-acetylserine(thiol)lyase is unknown. Several studies on two of these isoforms, one located in the cytosol and the other one in the chloroplast, have shown that while one isoform operates with a desulfhydrase activity and is essential to regulate the homeostasis of cysteine in the cytosol, the other, located in the chloroplast, synthesizes S-sulfocysteine. This metabolite appears to be essential for the redox regulation of the chloroplast under certain lighting conditions. SN - 1559-2324 UR - https://www.unboundmedicine.com/medline/citation/20699647/Low_abundance_does_not_mean_less_importance_in_cysteine_metabolism_ L2 - http://www.tandfonline.com/doi/full/10.4161/psb.5.8.12296 DB - PRIME DP - Unbound Medicine ER -