ribonucleic acid long non-coding ribonucleic acid long non-coding RNA long non coding ribonucleic acid long non coding RNA ppm Non-protein coding transcripts longer than 200 nucleotides and that can be involved in a number of functions, like transcription, post-translational and epigenetic regulation. Most lncRNAs do not have a known function so far. 2015-06-02T11:33:27Z lncRNA lncrna MI:2190 PSI-MI