Abstract
This work aims to elucidate the relationship between nitrogen depletion and Glutathione (GSH) level in Schizosaccharomyces pombe. The total GSH level was much higher in the Pap1-positive KP1 cells than in the Pap1-negative TP108-3C cells, suggesting that synthesis of GSH is dependent on Pap1. When the Pap1-positive KP1 cells were transferred to the nitrogen-depleted medium, total GSH level significantly increased up to 6 h and then slightly declined after 9 h. Elevation of the total GSH level was observed to be much less with the Pap1-negative cells. However, glucose deprivation was not able to enhance the GSH level in the KP1 cells. Activity of γ-glutamyltranspeptidase (γ-GT), an enzyme in the first step of GSH catabolism, also increased during nitrogen depletion. The total GSH level was more significantly enhanced in the KP1 cells overexpressing γ-GT2 than γ-GT1 during nitrogen starvation. Reactive oxygen species (ROS) levels were not changed during nitrogen starvation in both Pap1-positive and Pap1-negative cells. Collectively, nitrogen depletion causes up-regulation of GSH synthesis and γ-GT in a Pap1-dependent manner.
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- Ethephon increases photosynthetic-nitrogen use efficiency, proline and antioxidant metabolism to alleviate decrease in photosynthesis under salinity stress in mustard
Noushina Iqbal, Shahid Umar, Tasir S. Per, Nafees A. Khan
Plant Signaling & Behavior.2017; 12(5): e1297000. CrossRef - Metabolomic Analysis of Schizosaccharomyces pombe: Sample Preparation, Detection, and Data Interpretation
Tomáš Pluskal, Mitsuhiro Yanagida
Cold Spring Harbor Protocols.2016; 2016(12): pdb.top079921. CrossRef - Functional human induced hepatocytes (hiHeps) with bile acid synthesis and transport capacities: A novel in vitro cholestatic model
Xuan Ni, Yimeng Gao, Zhitao Wu, Leilei Ma, Chen Chen, Le Wang, Yunfei Lin, Lijian Hui, Guoyu Pan
Scientific Reports.2016;[Epub] CrossRef - γ-Glutamyltransferases (GGT) in Colletotrichum graminicola: mRNA and enzyme activity, and evidence that CgGGT1 allows glutathione utilization during nitrogen deficiency
Marco H. Bello, Dexter Morin, Lynn Epstein
Fungal Genetics and Biology.2013; 51: 72. CrossRef - Clades of γ-glutamyltransferases (GGTs) in the ascomycota and heterologous expression of Colletotrichum graminicola CgGGT1, a member of the pezizomycotina-only GGT clade
Marco H. Bello, Lynn Epstein
Journal of Microbiology.2013; 51(1): 88. CrossRef - Glutathione Degradation Is a Key Determinant of Glutathione Homeostasis
Peggy Baudouin-Cornu, Gilles Lagniel, Chitranshu Kumar, Meng-Er Huang, Jean Labarre
Journal of Biological Chemistry.2012; 287(7): 4552. CrossRef - Expression of the atf1+ gene is upregulated in fission yeast under nitrosative and nutritional stresses
S.-H. Song, B.-M. Kim, C.-J. Lim, Y.S. Song, E.-H. Park
Canadian Journal of Microbiology.2009; 55(11): 1323. CrossRef