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Genomes are promiscuously transcribed, necessitating mechanisms that facilitate the sorting of RNA for function or destruction. The polyA (pA) tail is one such distinguishing feature, which in the Saccharomyces cerevisiae nucleus is bound by the Nab2p protein, yielding transcript protection. As Nab2p also contacts the main nuclear export factor Mex67p, we asked whether transport kinetics contributes to RNA sorting. Indeed, 3 0 end sequencing of newly transcribed pA + RNAs demonstrates thatdoi:10.1016/j.celrep.2018.07.103 pmid:30157437 pmcid:PMC6130047 fatcat:km6pgp4hhvc37j2pef2zndmsjm