• Chloroplast genes are transcribed by the plastid-encoded RNA polymerase (PEP) or nucleus-encoded RNA polymerase. (jipb.net)
  • Johnson (Athens, USA), O. Keech (Umea), A. Meyer (Bonn), U. Mühlenhoff (Marburg), C. Remacle (Liège), F. Vignols (BPMP Montpellier)** - **Structure-Function analysis of glutathione transferases** Glutathione transferases (GSTs) constitute large multigenic families of more than 50 genes in terrestrial plants. (hal.science)
  • The current work is centered on the structure-function analysis of specific classes of glutathione transferases, focusing in particular on the isolation and identification of physiological substrates explaining their implication in biotic or abiotic stress responses. (hal.science)
  • Those having a cysteinyl residue in their catalytic site (Cys-GSTs) possess the ability to catalyze the reverse reaction, *i.e.*, the removal of glutathione from a number of structurally different heterocyclic molecules. (hal.science)
  • To understand the mechanism of tolerance to deferent stresses in tea plant, a new glutathione peroxidase gene of tea plant was cloned and its expression pattern was analyzed under abiotic and biotic stresses. (springeropen.com)
  • Since glutathione, ascorbate and NADPH are present in high concentrations in plant cells it is assumed that the glutathione-ascorbate cycle plays a key role for H2O2 detoxification. (wikipedia.org)
  • A novel cDNA encoding glutathione peroxidase of tea plant (Camellia sinensis) was isolated by rapid amplification of cDNA ends (RACE) method and designated as CsGPX2 (GenBank Accession No. JQ247186). (springeropen.com)
  • A meticulous exploration of its function in these cells unravels its imperative role in generating a substantial amount of NADPH, which is instrumental in maintaining the reduced form of glutathione. (microbiologynote.com)
  • The glutathione peroxidase gene has positive function to damage induced by ROS. (springeropen.com)
  • In this context, the intervention of the TRX and glutathione (GSH)/GRX reducing systems in the sulfur signaling/trafficking pathways is examined as both the TRX and GSH/GRX systems might modulate STR function and in particular be central to the formation of hydrogen sulfide, a molecule susceptible to trigger redox signalling cascades in several physiological situations. (hal.science)
  • Dehydroascorbate is reduced to ascorbate by dehydroascorbate reductase (DHAR) at the expense of GSH, yielding oxidized glutathione (GSSG). (wikipedia.org)
  • The reduction of dehydroascorbate may be non-enzymatic or catalysed by proteins with dehydroascorbate reductase activity, such as glutathione S-transferase omega 1 or glutaredoxins. (wikipedia.org)
  • Redox regulation of plastid gene expression and different metabolic pathways promotes many activities of redox-sensitive proteins. (bvsalud.org)
  • We address the question of how the plastid redox state and the contributing reducing enzymes control the enzymes of tetrapyrrole biosynthesis (TBS). (bvsalud.org)
  • The role of glutathione in photosynthetic organisms: emerging functions for glutaredoxins and glutathionylation" (PDF). (wikipedia.org)
  • GSTs are predominantly expressed in the cytosol, where their GSH-dependent catalytic functions include the conjugation and resulting detoxification of herbicides, the reduction of organic hydroperoxides formed during oxidative stress and the isomerization of maleylacetoacetate to fumarylacetoacetate, a key step in the catabolism of tyrosine. (biomedcentral.com)