--- /dev/null
+[[!meta title="A Tetrahymena Piwi bound to mature tRNA 3' fragments activates the exonuclease Xrn2 for RNA processing in the nucleus."]]
+[[!tag small_RNA ribosome]]
+
+Couvillion MT, Bounova G, Purdom E, Speed TP, Collins K.
+
+Mol Cell. 2012 Nov 30;48(4):509-20. doi: 10.1016/j.molcel.2012.09.010
+
+A Tetrahymena Piwi bound to mature tRNA 3' fragments activates the exonuclease Xrn2 for RNA processing in the nucleus.
+
+[[!pmid 23084833 desc="tRNA fragments indirectly implicated in rRNA processing."]]