Article
U1A inhibits cleavage at the immunoglobulin M heavy-chain secretory poly(A) site by binding between the two downstream GU-rich regions.
Molecular and cellular biology - 1 Jul 2004
Phillips Catherine, Pachikara Niseema, Gunderson Samuel I
Abstract excerpt
The immunoglobulin M heavy-chain locus contains two poly(A) sites which are alternatively expressed during B-cell differentiation. Despite its promoter proximal location, the secretory poly(A) site is not expressed in undifferentiated cells. Crucial to the activation of the secretory poly(A) site during B-cell differentiation are changes in the binding of cleavage stimulatory factor 64K to GU-rich elements...
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