In eukaryotes, microRNAs and small interfering RNAs, as part of protein complexes, can attack specific messenger RNAs with complementary sequences, thereby inhibiting translation. However, RNA can also complement DNA. So, do any regulatory RNAs directly bind to DNA (with a protein complex or alone)?
I am only interested in regulation, not modifying DNA (like CRISPR does). I assume that means I am asking if any regulatory RNAs persistently bind to DNA, blocking RNA polymerases?
This question is for either or both eukaryote and prokaryotes.