Optimize nearly PAM-less adenine base editor to improve editing efficiency
Objective To explore the effects of replacing different components of PAM-less adenine base editor (ABE) on its editing efficiency. Methods ABEmax was replaced with Tad-8e in SpRY-ABEmax to construct SpRY-ABE8e. Then the connecting peptide 3xGGS-XTEN-3xGGS between Cas9 protein variant SpRY and Tad-8...