PAM-interacting domain swapping is extensively utilized in nature to evolve CRISPR-Cas9 nucleases with altered PAM specificities
Q. y. Wang, X. m. Bian, J. l. Du, Y. w. Lv, L. Tao, T. Xie
The paper identifies domain swapping in Cas9 proteins as a mechanism for evolving PAM specificity, demonstrating its prevalence and utility in generating novel PAM-specific enzymes.
bioRxiv · May 1, 2021 · PreprintBiochemistry