Recombinant Streptococcus pyogenes tag-free Cas9 nuclease expressed in an Escherichia coli with a N-terminal nucleic localization signal (NLS).
Host:
Escherichia coli
Theoretical MW (kDa):
~160 kDa
Form:
Liquid
Preparation Method:
Escherichia coli expression system
Purity:
≥ 95% as analyzed by SDS-PAGE ≥ 90% as analyzed by SEC-HPLC
Endotoxin Level:
≤ 10 EU/mg as analyzed by gel clotting method
Quality Control Testing:
Cleavage assay
A 20 uL reaction in 1xCas9 Nuclease Reaction Buffer containing 160 ng linearized plasmid, 100 ng gRNA, and 50 ng Ultra eSpCas9-N-NLS Research, tag-free for 2 hours at 37°C results in a digestion efficiency of linearized plasmid higher than 90%, as determined by agarose gel electrophoresis.
Recommend Usage:
CRISPR Genomic editing The optimal working dilution should be determined by the end user.
Storage Buffer:
In 25 mM Tris, 300 mM NaCl, 0.1 mM EDTA, pH8.0 (50% glycerol).
Storage Instruction:
Store at -20°C. Aliquot to avoid repeated freezing and thawing.