Fig 1 Mature Messenger RNA (image) Institute for Basic Science Share Print E-Mail Caption Mature messenger RNA (mRNA) has a long adenosine (A) tail, named poly(A) tail, for its regulation and protection. Over time, the tail is shortened by deadenylation enzymes, such as the CNOT complex (Pac-Man shape), resulting in mRNA degradation. This study found that mixed tails which contain non-A nucleotides, interfere with the A removal process. As a result, the mixed tail contributes to mRNA survival, so the body may keep making specific proteins. Credit IBS Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.