Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g25080	Converts Mg-protoporphyrin IX to Mg-protoporphyrin IX methylester using S-adenosyl-L-methionine as a cofactor.	Knock-out of the magnesium protoporphyrin IX methyltransferase gene in Arabidopsis. Effects on chloroplast development and on chloroplast-to-nucleus signaling.; 2007; DOI: 10.1074/jbc.m610286200; PMID: 17135235; https://pubmed.ncbi.nlm.nih.gov/17135235/