Despite often being noncoding DNA, some ultra-conserved elements have been found to be transcriptionally active, giving non-coding RNA molecules.

The bacterial sroE RNA gene is a non-coding RNA molecule of 90 nucleotides in length.

The Spot 42 (spf) RNA is a non-coding RNA molecule discovered over three decades ago.

In molecular biology miR-132 microRNA is a short non-coding RNA molecule.

However, some DNA sequences that do not code protein may still encode functional non-coding RNA molecules, which are involved in the regulation of gene expression.

In molecular biology mir-126 is a short non-coding RNA molecule.

MiR-212 is a short non-coding RNA molecule.

The miR-129 microRNA precursor is a small non-coding RNA molecule that regulates gene expression.

In molecular biology miR-181 microRNA precursor is a small non-coding RNA molecule.

In molecular biology, miR-137 (or microRNA-137) is a short non-coding RNA molecule that functions to regulate the expression levels of other genes by various mechanisms.