... activation of the complex, which allow PAP to elongate the poly(A) tail[6,7]. Then, the poly(A) tail binds to the poly(A)-bind-ing protein (PABP), which brings in eIF4G, thusallowing the positioning ... arginine ⁄ glycine-rich(RGG) motifs that are characteristic of RNA-bindingproteins, and an alanine-rich carboxy-terminal sequencethat could be involved in protein–protein interactions.Interestingly, ... protein was fused to the MS2 coat protein to allow the tethering of XRbm9 toa reporter mRNA bearing a tandem pair of MS2-bind-ing sites. Oocytes were first injected with the MS2-XRbm9-encoding...