You are currently viewing the abstract.AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.Log in via OpenAthens.Log in with your institution via Shibboleth.Download and print this article for your personal scholarly, research, and educational use.Buy a single issue of Science for just $15 USD.One of the most conserved RNA modifications across organisms is the addition of a polyadenosine, or poly(A), tail to the 3′ end of RNA molecules. Cis-acting RNA stabilization elements, such as...…You are currently viewing the abstract.AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.Log in via OpenAthens.Log in with your institution via Shibboleth.Download and print this article for your personal scholarly, research, and educational use.Buy a single issue of Science for just $15 USD.One of the most conserved RNA modifications across organisms is the addition of a polyadenosine, or poly(A), tail to the 3′ end of RNA molecules. Cis-acting RNA stabilization elements, such as...WW…