Starting at $135.00 (CRISPR associated protein 9) is an RNA-guided DNA nuclease enzyme associated with Streptococcus pyogenes' CRISPR immunity system. Cas9 is widely used to induce site-directed double strand breaks in DNA, which can lead to gene inactivation or the introduction of heterologous DNA sequences through non-homologous end joining and homologous recombination. Product Data Sheets: Cas9_PDS_V2.0 ***Tested and Verified Enzyme*** Properties & Usage Product source: Product source: An E. coli strain that carries the synthetic Streptococcus Pyogenes Cas9 gene. All sizes available in 1 microgram per microliter concentration Storage Temperature: -20°C Does not come with gRNA You may purchase gRNA separately here.