Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g34840	Enzyme of the methionine cycle that catalyzes the irreversible cleavage of the glycosidic bond in 5'-methylthioadenosine (MTA) and S-adenosylhomocysteine (SAH/AdoHcy) to a lesser extent, to adenine and the corresponding thioribose, 5'-methylthioribose and S- ribosylhomocysteine, respectively.	The role of methionine recycling for ethylene synthesis in Arabidopsis.; 2007; DOI: 10.1111/j.1365-313x.2006.02942.x; PMID: 17144895; https://pubmed.ncbi.nlm.nih.gov/17144895/ | Molecular determinants of substrate specificity in plant 5'-methylthioadenosine nucleosidases.; 2008; DOI: 10.1016/j.jmb.2008.01.088; PMID: 18342331; https://pubmed.ncbi.nlm.nih.gov/18342331/ | Biochemical and structural characterization of 5'-methylthioadenosine nucleosidases from Arabidopsis thaliana.; 2009; DOI: 10.1016/j.bbrc.2009.02.106; PMID: 19249293; https://pubmed.ncbi.nlm.nih.gov/19249293/ | Inhibition of 5'-methylthioadenosine metabolism in the Yang cycle alters polyamine levels, and impairs seedling growth and reproduction in Arabidopsis.; 2010; DOI: 10.1111/j.1365-313x.2010.04211.x; PMID: 20345605; https://pubmed.ncbi.nlm.nih.gov/20345605/ | Mechanism of substrate specificity in 5'-methylthioadenosine/S-adenosylhomocysteine nucleosidases.; 2011; DOI: 10.1016/j.jsb.2010.06.006; PMID: 20554051; https://pubmed.ncbi.nlm.nih.gov/20554051/
Arabidopsis	At4g38800	Enzyme of the methionine cycle that catalyzes the irreversible cleavage of the glycosidic bond in 5'-methylthioadenosine (MTA) to adenine and 5'-methylthioribose.	The role of methionine recycling for ethylene synthesis in Arabidopsis.; 2007; DOI: 10.1111/j.1365-313x.2006.02942.x; PMID: 17144895; https://pubmed.ncbi.nlm.nih.gov/17144895/ | Molecular determinants of substrate specificity in plant 5'-methylthioadenosine nucleosidases.; 2008; DOI: 10.1016/j.jmb.2008.01.088; PMID: 18342331; https://pubmed.ncbi.nlm.nih.gov/18342331/ | Biochemical and structural characterization of 5'-methylthioadenosine nucleosidases from Arabidopsis thaliana.; 2009; DOI: 10.1016/j.bbrc.2009.02.106; PMID: 19249293; https://pubmed.ncbi.nlm.nih.gov/19249293/ | Inhibition of 5'-methylthioadenosine metabolism in the Yang cycle alters polyamine levels, and impairs seedling growth and reproduction in Arabidopsis.; 2010; DOI: 10.1111/j.1365-313x.2010.04211.x; PMID: 20345605; https://pubmed.ncbi.nlm.nih.gov/20345605/