Get Help Sign In

Frequently asked questions

Our Scientific Applications Support team has assembled a list of frequently asked questions to help you find answers quickly. Filter using one or more categories to focus on specific topics, or use the search bar to perform a text search.

When using the Alt-R® Cas9 nickases, do I follow the same protocol as the standard Alt-R S.p. Cas9 Nuclease V3?

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 crRNAs are required to generate a double-strand break, while only one crRNA is required for the standard nuclease.

When preparing materials to deliver two crRNAs simultaneously, first prepare RNPs with each crRNA separately before RNP delivery. This will help prevent undesirable hybridization between RNAs.