Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g20910	Methyltransferase that adds a methyl group to the ribose of the last nucleotide of small RNAs (sRNAs).	HEN1 functions pleiotropically in Arabidopsis development and acts in C function in the flower.; 2002; DOI: 10.1242/dev.129.5.1085; PMID: 11874905; https://pubmed.ncbi.nlm.nih.gov/11874905/ | Formation of corymb-like inflorescences due to delay in bolting and flower development in the corymbosa2 mutant of Arabidopsis.; 2002; DOI: 10.1093/pcp/pcf036; PMID: 11917084; https://pubmed.ncbi.nlm.nih.gov/11917084/ | Methylation protects miRNAs and siRNAs from a 3'-end uridylation activity in Arabidopsis.; 2005; DOI: 10.1016/j.cub.2005.07.029; PMID: 16111943; https://pubmed.ncbi.nlm.nih.gov/16111943/