Proteinase K (Recombinant), Molecular/PCR Grade

SKU
P-1264
  • CAS:39450-01-6
  • MW:29.3 kDa
  • Appearance:White to off-white lyophilized solid
  • Purity:≥99%

1

1

0

Starting at $75.00

Product Name Qty
Proteinase K (Recombinant), Molecular/PCR Grade
1 g
$475.00
Proteinase K (Recombinant), Molecular/PCR Grade
10 g
$4,250.00
Proteinase K (Recombinant), Molecular/PCR Grade
100 mg
$75.00
Proteinase K (Recombinant), Molecular/PCR Grade
500 mg
$275.00

Description

Proteinase K is a highly reactive serine protease that displays an ability to digest native proteins, thereby inactivating enzymes such as DNase and RNase without recourse to a denaturation process. It is the most powerful proteinase among all proteinases characterized so far. It cleaves at the peptide bond adjacent to the carboxylic acid group of aliphatic, aromatic or hydrophobic amino acids.

Recombinant Proteinase K is used in the isolation or preparation of high molecular weight nucleic acids. It is highly pure and has a higher specific activity and is more stable at room temperature when compared to native Proteinase K.

Recombinant Proteinase K is expressed from yeast Pichia pastoris with cloned gene encoding Engyodontium album (Tritirachium album) endolytic protease.

 

Applications

• Recombinant Proteinase K is extremely effective on native proteins and can therefore be used to rapidly inactivate endogenous nucleases such as RNases and DNases. This property makes Proteinase K particularly suitable for the isolation of native RNA and DNA from tissues or cell lines.

• Used for the analysis of membrane structures by modifying proteins and glycoproteins on cell surfaces.

• Particularly well suited for isolating nucleic acids for amplification reactions.

• Promotes cell lysis by activating a bacterial autolytic factor.

• Used to remove cellular debris during the preparation of colony lifts, and to treat tissue sections to ensure efficient probe infiltration during in situ hybridization.

 

Reconstitution Recommendations

For stock solution preparation, we suggest reconstituting the lyophilized powder in a buffer (20 mM Tris, 1 mM CaCl2, 2% Glycerol, pH 7.4).

Calcium is important for thermo-stability of Proteinase K and pH value is critical for high solubility.

The use of cryoprotectant glycerol to a final concentration of 50% in stock solution is to prevent freeze/thaw damage. Proteinase K retained 99% of activity after 12 freeze/thaw cycles in stock solution. Avoid repeated freezing and thawing to prevent precipitation of the protein if glycerol is not added.

Proteinase K solution remains active over a broad pH range (4.0-12.5, often used in range of 7.5-9.0) and over a broad temperature range of 25-75°C. Solution remains sterile and stable for at least 12 months at 4°C.

Caution: Proteinase K Recombinant Lyophilized Powder is not sterile. Stock solution can be prepared as a 20-40 mg/mL in 20 mM Tris-HCl buffer, sterilized using a 0.22 µm filter. Stock solution can be stored in 50% glycerol in aliquots at a wide temperature range of 24°C to -80°C.

For sterile filtration, we recommend using PES pr PVDF membranes with low protein binding.


 

Composition (NO ADDITIVES)

• ≥90% Protein Proteinase K, biuret test.

• Excipients: Sucrose 8%

• DNA and RNA free

• Endotoxin Free

 

Specifications

• Stable and active over a wide pH range of 4-12, Maximal Activity is in pH range of 7.5-12.0

• Active with SDS, urea and EDTA. The most active temperature is 65°C.

• Inactivated by diisopropyl fluorophosphates (DFP) and phenyl methane sulfonyl fluoride (PMSF).

• Purification: Nickel affinity chromatography followed by ion-exchange chromatography and dialysis.

• EC #: 3.4.21.64

  

Additional Reading from AG Scientific

Product has been tested and all data confirmed prior to distribution. Not for human therapeutic use or for medicinal purposes. For research applications only.

More Information
Alternate Name/Synonyms
Protease K; Endopeptidase K; Tritirachium alkaline proteinase; PK
SKU
P-1264
CAS #
39450-01-6
Molecular Weight
29.3 kDa
Appearance
White to off-white lyophilized solid
Purity
≥99%
Solubility
50mM Tris-HCl (pH 7.5), 3mM CaCl2, 50% Glycerol
Storage Temp
4°C, desiccated
THERAPEUTIC AREA
Not Available
USE
This PCR Grade Proteinase K is particularly suitable for isolating nucleic acids for amplification reactions, as well as for the analysis of membrane structures by modifying proteins and glycoproteins on cell surfaces. It is extremely effective on native proteins and can therefore be used to rapidly inactivate endogenous nucleases such as RNases and DNases during nucleic acid isolation. This property makes Proteinase K particularly suitable for the isolation of native RNA and DNA from tissues or cell lines. It promotes cell lysis by activating a bacterial autolytic factor. Because the enzyme is tested for the absence of RNases and DNases, and is virtually free of DNA, it is especially suitable for isolating PCR and RT-PCR templates. Proteinase K can also be used to remove cellular debris during the preparation of colony lifts, and to treat tissue sections to ensure efficient probe infiltration during in situ hybridization.
Handling
Wear personal protective equipment. Ensure adequate ventilation. Do not get in eyes, on skin, or on clothing. Avoid ingestion and inhalation. Avoid dust formation. Wash hands before breaks and immediately after handling the product.
Certificate of Analysis 1
Certificate of Analysis 2
Certificate of Analysis 3
GHS PICTOGRAMS
Handling Wear personal protective equipment. Ensure adequate ventilation. Do not get in eyes, on skin, or on clothing. Avoid ingestion and inhalation. Avoid dust formation. Wash hands before breaks and immediately after handling the product.
To Top