Its associated guide RNAs contribute sequence information for recognition of transposon-related material. Repression can involve both RNA-level and chromatin-associated outputs, depending on developmental stage and partner factors. [ref]
A piRNA Pathway Primed by Individual Transposons Is Linked to De Novo DNA Methylation in Mice by Alexei A. Aravin and others. 2008, germline piRNA pathway and methylation
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