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. 1986 Mar;6(3):768–778. doi: 10.1128/mcb.6.3.768

Structural characterization of a heterogeneous family of rat brain mRNAs.

A P Tsou, C Lai, P Danielson, D J Noonan, J G Sutcliffe
PMCID: PMC367577  PMID: 3022128

Abstract

A large heterogeneous family of RNAs derived from a single rat gene contains members that differ from each other at one or more of three positions. Their 5' ends are nested and transcription can begin at 22 or more sites covering 265 nucleotides. Many of the 5' ends are detectable only in brain RNAs, and even 5' ends common with other tissues appear with different absolute and relative abundances in brain RNA. The central portions of the RNAs are of two forms, differing only by the presence or absence of 17 nucleotides; these forms are probably produced by alternative splicing. Polyadenylation occurs at either of two sites. This complicated family of 88 RNAs encodes two novel putative proteins that differ at their C termini.

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