Characterization of the extracellular γ-glutamyl transpeptidases, GGT1 and GGT2, in Arabidopsis

By Naoko Ohkama‐Ohtsu, S. Radwan, A. Peterson, Ping-Xia Zhao, A. Badr, C. Xiang, D. Oliver. 2007

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Redox Regulation in Photosynthetic Organisms: Signaling, Acclimation, and Practical Implications (2009, unknown): “At physiological glutathione concentrations, these ratios would predict a”
Antioxidants and Antioxidant Enzymes in Higher Plants (2018, background): “Interestingly, it had also been found that there is at least one vacuolar GGT in Arabidopsis, which is possibly involved in the breakdown of GS-conjugates (Grzam et al. 2007; Martin et al. 2007; Ohkama-Ohtsu et al. 2007b).”
Glutathione (2011, unknown): “1 mM (Martin and Slovin, 2000), consistent with their localization in a compartment where GSH concentrations are relatively low (Vanacker et al., 1998; Ohkamu-Ohtsu et al., 2007a).”
Glutathione in plants: an integrated overview. (2012, unknown): “Unlike their counterparts in animal cells, GGT1 and GGT2 are probably © 2011 Blackwell Publishing Ltd, Plant, Cell and Environment, 35, 454–484 bound to the cell wall rather than to the plasmalemmma (Martin et al. 2007; Ohkama-Ohtsu et al. 2007a).”
The Roles of Reactive Oxygen Metabolism in Drought: Not So Cut and Dried[1][C][W] (2014, background): “…genes included two CC-type GRXs, some of which are known to interact with transcription factors (Zander et al., 2012), a g-glutamyl transpeptidase1 involved in degradation of glutathione or glutathione S-conjugates in the apoplast (Ohkama-Ohtsu et al., 2007), and several GSTs.”