https://pmc.ncbi.nlm.nih.gov/articles/PMC42926/
Saturation mutagenesis of a polyadenylation signal reveals a hexanucleotide element essential for...
The cis-acting signal sequences required for mRNA 3' end formation are highly conserved and well characterized in higher eukaryotes. However, the situation in...
saturation mutagenesispolyadenylation signal