Poly(A)-binding protein and RNA complex. Molecular model showing the structure of a poly(A)-binding protein (PABP) molecule bound to the poly(A) tail of a polyadenylated mRNA (messenger ribonucleic acid) molecule. Polyadenylation is the addition of a poly(A) tail to an RNA molecule. PABP is an RNA-binding protein that binds to the poly(A) tail of mRNA and stimulates the activity of polyadenylate polymerase during protein synthesis.
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