An exonic splicing enhancer within a bidirectional coding sequence regulates alternative splicing of an antisense mRNA.

ABSTRACT: The discovery of increasing numbers of genes with overlapping sequences highlights the problem of expression in the context of constraining regulatory elements from more than one gene. This study identifies regulatory sequences encompassed within two genes that overlap in an antisense orientation at their 3' ends. The genes encode the alpha-thyroid hormone receptor gene (TRalpha or NR1A1) and Rev-erbalpha (NR1D1). In mammals TRalpha pre-mRNAs are alternatively spliced to yield mRNAs encoding functionally antagonistic proteins: TRalpha1, an authentic thyroid hormone receptor; and TRalpha2, a non-hormone-binding variant that acts as a repressor. TRalpha2-specific splicing requires two regulatory elements that overlap with Rev-erbalpha sequences. Functional mapping of these elements reveals m

SUBMITTER: Salato VK 

PROVIDER: S-EPMC2893273 | biostudies-literature | 2010 Mar-Apr

REPOSITORIES: biostudies-literature