Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At5g13630	Multifunctional protein involved in chlorophyll synthesis, plastid-to-nucleus retrograde signaling and abscisic acid (ABA) perception.	Arabidopsis genomes uncoupled 5 (GUN5) mutant reveals the involvement of Mg-chelatase H subunit in plastid-to-nucleus signal transduction.; 2001; DOI: 10.1073/pnas.98.4.2053; PMID: 11172074; https://pubmed.ncbi.nlm.nih.gov/11172074/ | The Mg-chelatase H subunit is an abscisic acid receptor.; 2006; DOI: 10.1038/nature05176; PMID: 17051210; https://pubmed.ncbi.nlm.nih.gov/17051210/ | The magnesium-chelatase H subunit binds abscisic acid and functions in abscisic acid signaling: new evidence in Arabidopsis.; 2009; DOI: 10.1104/pp.109.140731; PMID: 19535472; https://pubmed.ncbi.nlm.nih.gov/19535472/ | The Mg-chelatase H subunit of Arabidopsis antagonizes a group of WRKY transcription repressors to relieve ABA-responsive genes of inhibition.; 2010; DOI: 10.1105/tpc.110.073874; PMID: 20543028; https://pubmed.ncbi.nlm.nih.gov/20543028/ | Mg-chelatase H subunit affects ABA signaling in stomatal guard cells, but is not an ABA receptor in Arabidopsis thaliana.; 2011; DOI: 10.1007/s10265-011-0426-x; PMID: 21562844; https://pubmed.ncbi.nlm.nih.gov/21562844/ | Roles of the different components of magnesium chelatase in abscisic acid signal transduction.; 2012; DOI: 10.1007/s11103-012-9965-3; PMID: 23011401; https://pubmed.ncbi.nlm.nih.gov/23011401/
Rice	UniProt: B8ANF1	Involved in chlorophyll biosynthesis.	No verified direct reference in this release
Rice	Os03g0323200	Involved in chlorophyll biosynthesis.	C-terminal residues of oryza sativa GUN4 are required for the activation of the ChlH subunit of magnesium chelatase in chlorophyll synthesis.; 2012; DOI: 10.1016/j.febslet.2011.12.026; PMID: 22226678; https://pubmed.ncbi.nlm.nih.gov/22226678/