Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g31290	Converts GSH to 5-oxoproline and cysteine-glycine (Cys-Gly) dipeptide in vitro and plays a significant role in glutathione (GSH) homeostasis.	Defining the cytosolic pathway of glutathione degradation in Arabidopsis thaliana: role of the ChaC/GCG family of γ-glutamyl cyclotransferases as glutathione-degrading enzymes and AtLAP1 as the Cys-Gly peptidase.; 2015; DOI: 10.1042/bj20141154; PMID: 25716890; https://pubmed.ncbi.nlm.nih.gov/25716890/
Arabidopsis	At5g26220	Catalyzes the formation of 5-oxoproline from gamma-glutamyl dipeptides and plays a significant role in glutathione (GSH) homeostasis.	A γ-glutamyl cyclotransferase protects Arabidopsis plants from heavy metal toxicity by recycling glutamate to maintain glutathione homeostasis.; 2013; DOI: 10.1105/tpc.113.111815; PMID: 24214398; https://pubmed.ncbi.nlm.nih.gov/24214398/
Arabidopsis	At1g44790	Converts GSH to 5-oxoproline and cysteine-glycine (Cys-Gly) dipeptide in vitro and plays a significant role in glutathione (GSH) homeostasis.	Defining the cytosolic pathway of glutathione degradation in Arabidopsis thaliana: role of the ChaC/GCG family of γ-glutamyl cyclotransferases as glutathione-degrading enzymes and AtLAP1 as the Cys-Gly peptidase.; 2015; DOI: 10.1042/bj20141154; PMID: 25716890; https://pubmed.ncbi.nlm.nih.gov/25716890/