...specific genomic edits by copying from a DNA donor template . The donor template contains the desired sequence...out integration of donor DNA. Both types of CASTs have been found to achieve donor DNA integration for...systems contain two components: a guide RNA ( gRNA or sgRNA ) and a CRISPR-associated endonuclease (Cas enzyme...cell along with the gRNA(s) and Cas enzyme. The donor DNA contains the desired edit as well as additional...homology arms. Depending on the application, the donor DNA may be a single-stranded oligonucleotide, double-stranded...for large edits or insertions. When designing the donor template, incorporating mutations that prevent further...should alter the PAM site or target sequence in your donor DNA with a silent mutation that does not change ...