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Phytochelatin 2, a short phytochelatin, is a key plant peptide binding heavy metals. Phytochelatins are a diverse set of plant compounds that chelate metals, protect against metal toxicity and function in metal homeostasis[1][2].

ChEBI: A phytochelatin that is a pentapeptide consisting of 2 units of gamma-Glu-Cys, with a glycyl unit at the C-terminus.

[1] phytochelatin, heavy, metals, chelate, homeostasis, glutathione, microorganisms, toxicity
[2] Dennis KK, et al. Phytochelatin database: a resource for phytochelatin complexes of nutritional and environmental metals. Database (Oxford). 2019;2019:baz083. DOI:10.1093/database/baz083
[3] Chia JC, et al. Tentative identification of the second substrate binding site in Arabidopsis phytochelatin synthase. PLoS One. 2013;8(12):e82675. Published 2013 Dec 5. DOI:10.1371/journal.pone.0082675
[4] Jacquart A, et al. Cd2+ and Pb2+ complexation by glutathione and the phytochelatins. Chem Biol Interact. 2017;267:2-10. DOI:10.1016/j.cbi.2016.09.002