Protein digestion for structural analysis: Pfu Protease S
Pfu Protease S is an endo-type serine protease with broad specificity for native and denatured proteins. Cleavage occurs mainly on the carboxy terminus of peptide bonds on hydrophobic amino acid residues.
- Digestion of proteins and peptides for primary structure analysis
Recombinant Bacillus encoding the Pyrococcus furiosus protease gene
Homogeneous via SDS-PAGE. No other proteases detected.
Molecular weight: 45 kDa (SDS-PAGE), 42.906 kDA (calculated)
Optimum temperature: 85-95°C
Optimum pH: 6.0-8.0
Tolerance to denaturants at 95°C pH 7.0:
- 1% SDS; retains 50% activity after 24 hr at 95°C, pH 7.0
- 6.4 M urea; retains 70% activity after 1 hr at 95°C, pH 7.0
- 50% acetonitrile; retains 90% activity after 1 hr at 95°C, pH 7.0
Definition of activity
One unit of activity corresponds to the amount of enzyme required to hydrolyze 1 mmol of N-succinyl Ala-Ala-Pro-Phe p-nitroanilide in 1 minute at 95°C and pH 7.0.
In a solution of 25 mM Tris-HCl (pH 7.6) containing 40% ethanol
Additional product information
Please see the product's Certificate of Analysis for information about storage conditions, product components, and technical specifications. Please see the Kit Components List to determine kit components. Certificates of Analysis and Kit Components Lists are located under the Documents tab.
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