P6911
Protease from Streptomyces griseus
BioReagent, DNase, RNase, and nickase, none detected (No RNase.)
Synonym(s):
Actinase E, Pronase E
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About This Item
CAS Number:
UNSPSC Code:
12352204
eCl@ss:
32160410
EC Number:
232-909-5
NACRES:
NA.21
MDL number:
Product Name
Protease from Streptomyces griseus, BioReagent, DNase, RNase, and nickase, none detected (No RNase.)
grade
Molecular Biology
product line
BioReagent
form
powder
mol wt
monomer ~20 kDa
concentration
≥4 unit/mg
solubility
water: 5-20 mg/mL
foreign activity
DNase, RNase, and nickase, none detected (No RNase.)
storage temp.
−20°C
Quality Level
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Analysis Note
The protease is incubated for 10 minutes at pH 7.5 at 37°C in a 6 ml reaction volume containing 0.54% casein and 0.041 M potassium phosphate buffer. The reaction is stopped by the addition of 5.0 ml of 0.11 M trichloroacetic acid.
Application
Protease is typically used in nucleic acid isolation procedures in incubations of 0.5-3.0 hours supplemented with 0.2% sodium dodecyl sulfate and 10 mM EDTA.
Suitable for:
- Nucleic acid isolation procedures in incubations
- Degrade protein during nucleic acid purification
- Proteolysis of insoluble protein
- Structural protein studies
This enzyme is more active at a higher pH range than the known alkaline protease, showing the proteolytic activity even in 0.2N NaOH solution. This enzyme is useful for proteolysis of insoluble protein and for structure investigation of protein.
Biochem/physiol Actions
A mixture of at least three proteolytic activities including an extracellular serine protease. In general, serine proteases display a wide range of substrate specificities, which are believed to be mediated by an active site composed of one Asp, one His, and a Ser residue in the molecule. This enzyme prefers to hydrolyze peptide bonds on the carboxyl side of glutamic or aspartic acid.
General description
A mixture of at least three proteolytic activities including an extracellular serine protease. In general, serine proteases display a wide range of substrate specificities, which are believed to be mediated by an active site composed of one Asp, one His, and a Ser residue in the molecule. This enzyme prefers to hydrolyze peptide bonds on the carboxyl side of glutamic or aspartic acid.
Completely inactivated by heating above 80 °C for 15-20 minutes.
Other Notes
One unit will hydrolyze casein to produce color equivalent to 1.0 μmole (181 μg) of tyrosine per min at pH 7.5 at 37 °C (color by Folin-Ciocalteu reagent).
This protease is completely inactivated by heating above 80°C for 15-20 minutes. This enzyme is more active at a higher pH range, showing the proteolytic activity even in 0.2N NaOH solution.
Preparation Note
Collected from culture broth of S. griseus.
signalword
Danger
hcodes
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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