物种	参考基因 ID	可能功能	对应论文 / DOI
拟南芥	At3g18380	可能在将Pol IV招募到与K9甲基化组蛋白H3相关的基因组区域（它们是RdDM的靶点）中发挥作用。	暂无已核实直接文献
拟南芥	At1g15215	参与 RNA 指导的 DNA 甲基化。	SHH1, a homeodomain protein required for DNA methylation, as well as RDR2, RDM4, and chromatin remodeling factors, associate with RNA polymerase IV.; 2011; DOI: 10.1371/journal.pgen.1002195; PMID: 21811420; https://pubmed.ncbi.nlm.nih.gov/21811420/ | An atypical component of RNA-directed DNA methylation machinery has both DNA methylation-dependent and -independent roles in locus-specific transcriptional gene silencing.; 2011; DOI: 10.1038/cr.2011.173; PMID: 22064704; https://pubmed.ncbi.nlm.nih.gov/22064704/ | Polymerase IV occupancy at RNA-directed DNA methylation sites requires SHH1.; 2013; DOI: 10.1038/nature12178; PMID: 23636332; https://pubmed.ncbi.nlm.nih.gov/23636332/ | DTF1 is a core component of RNA-directed DNA methylation and may assist in the recruitment of Pol IV.; 2013; DOI: 10.1073/pnas.1300585110; PMID: 23637343; https://pubmed.ncbi.nlm.nih.gov/23637343/