CAS9 Protein

Synonym: Cas9-NLS from Streptococcus pyogenes, expressed in Escherichia coli



Related Categories CRISPR-Cas9, Cas9 Protein, Functional Genomics and RNAi, Molecular Biology
Quality Level   PREMIUM
recombinant   expressed in E. coli
assay   ≥95% (SDS-PAGE)
form   lyophilized powder
shipped in   ambient
storage temp.   −20°C



Each kit consists of:
• one vial of Cas9 recombinant protein
• one vial containing 1 mL of 1× dilution buffer
• one vial containing 1 mL of nuclease-free water with glycerol

Other Notes

Use our CRISPR Selection Tool to order gRNA


pkg of 50 μg
pkg of 250 μg

Legal Information

CRISPR Use License Agreement


Lyophilized S. pyogenes Cas9 protein should be resuspended in the Reconstitution solution provided to desired concentration. The solution should be allowed to incubate at room temperature (20-23 °C) for 10 minutes. Centrifuge immediately before use.


Functional Genomics/Target Validation/Genome Editing

Features and Benefits

• Highly specific
• Highly active
• Ready-to-inject/transfect


CRISPR/Cas systems are employed by bacteria and archaea as a defense against invading viruses and plasmids. Recently, the type II CRISPR/Cas system from the bacterium Streptococcus pyogenes has been engineered to function in eukaryotic systems using two molecular components: a single Cas9 protein and a non-coding guide RNA (gRNA). The Cas9 endonuclease can be programmed with a gRNA, directing a DNA double-strand break (DSB) at a desired genomic location. Similar to DSBs induced by zinc finger nucleases (ZFNs), the cell then activates endogenous DNA repair processes, either non-homologous end joining (NHEJ) or homology-directed repair (HDR), to heal the targeted DSB.

General description

Recombinant Cas9 protein from Streptococcus pyogenes (~160 KD) is a ready-to-use reagent for genome engineering experiments. When combined with target-specific guide RNAs, wild type Streptococcus pyogenes Cas9 protein will act as a targeted nuclease suitable for transfection of cell cultures and for the accelerated development of genetically-modified animals via one-cell embryo injection.

Kit component only


Product #

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Cas9-NLS from Streptococcus pyogenes, expressed in Escherichia coli SDS    
Dilution buffer for Cas9 proteins SDS    
Reconstitution solution for Cas9 proteins SDS    
Safety & Documentation

Safety Information

NONH for all modes of transport
Protocols & Articles


Protocol Guide: CRISPR/CAS9 Gene Editing of Human Induced Pluripotent Stem Cells (iPSCs)

Induced pluripotent stem cells (iPSCs), have the capacity to give rise to differentiated progeny arising from of all germ layers of the body including: ectoderm, endoderm, and mesoderm. The ability t...
Keywords: Alzheimer Disease, Apoptosis, Cell culture, Centrifugation, Cloning, Culture media, Gene expression, Genetic, Microscopy, Parkinson Disease, Phase transitions, Transfection

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