<i>In Vitro</i>Studies of Novel<i>PRKAR1A</i>Mutants that Extend the Predicted RIα Protein Sequence into the 3′-Untranslated Open Reading Frame: Proteasomal Degradation Leads to RIα Haploinsufficiency and Carney Complex

Abstract

This was the first demonstration of proteasomal degradation of RIα protein variants leading to PRKAR1A haploinsufficiency and CNC, adding protein surveillance to NMD in the cellular mechanisms overseeing RIα synthesis. In agreement with the molecular data, CNC patients bearing PRKAR1A defects that extend the open reading frame did not have a different phenotype, although this has to be confirmed in a larger number of patients.