CPEB
CPEB , or cytoplasmic polyadenylation element binding protein , is a highly conserved RNA-binding protein that promotes the elongation of the polyadenine tail of messenger RNA . 
<triplet> CPEB <subj> protein <obj> instance of <triplet> polyadenine tail <subj> messenger RNA <obj> part of <triplet> messenger RNA <subj> RNA <obj> subclass of