Widespread and extensive lengthening of 3' UTRs in the mammalian brain.

ABSTRACT: Remarkable advances in techniques for gene expression profiling have radically changed our knowledge of the transcriptome. Recently, the mammalian brain was reported to express many long intergenic noncoding (lincRNAs) from loci downstream from protein-coding genes. Our experimental tests failed to validate specific accumulation of lincRNA transcripts, and instead revealed strongly distal 3' UTRs generated by alternative cleavage and polyadenylation (APA). With this perspective in mind, we analyzed deep mammalian RNA-seq data using conservative criteria, and identified 2035 mouse and 1847 human genes that utilize substantially distal novel 3' UTRs. Each of these extends at least 500 bases past the most distal 3' termini available in Ensembl v65, and collectively they add 6.6 Mb and 5.1 Mb

SUBMITTER: Miura P 

PROVIDER: S-EPMC3638137 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature