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Yes. The delivery of the CRISPR-Cas9 ribonucleoprotein (RNP) complexes with Alt-R Cas9 nickases is similar to RNP with the standard Alt-R S.p. Cas9 Nuclease V3, so the same protocol can be used with these enzymes. However, with the Cas9 nickases, two guide RNAs are required to generate a double-strand break, while only one guide RNA is required for the standard nuclease.
When preparing materials to deliver two guide RNAs simultaneously, first prepare RNPs with each guide RNA separately before RNP delivery.