Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At3g57550	Essential for recycling GMP and indirectly, cGMP.	No verified direct reference in this release
Arabidopsis	At2g41880	Essential for recycling GMP and indirectly, cGMP.	Cloning of the guanylate kinase homologues AGK-1 and AGK-2 from Arabidopsis thaliana and characterization of AGK-1.; 2000; DOI: 10.1046/j.1432-1327.2000.01045.x; PMID: 10632732; https://pubmed.ncbi.nlm.nih.gov/10632732/
Rice	Os12g0515600	Essential for recycling GMP and indirectly, cGMP.	No verified direct reference in this release