P2308
Proteinase K from Tritirachium album
lyophilized powder, BioUltra, ≥30 units/mg protein, for molecular biology
grade
for molecular biology
Quality Level
product line
BioUltra
form
lyophilized powder
specific activity
≥30 units/mg protein
mol wt
28.93 kDa
composition
Protein, ≥90% biuret
impurities
≤1 ppm DNA
foreign activity
DNAse, Nickase and RNAse, none detected
shipped in
wet ice
storage temp.
−20°C
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Application
Removes endotoxins that bind to cationic proteins such as lysozyme and ribonuclease A.
Reported useful for the isolation of hepatic, yeast, and mung bean mitochondria
Determination of enzyme localization on membranes
Treatment of paraffin embedded tissue sections to expose antigen binding sites for antibody labeling.
Digestion of proteins from brain tissue samples for prions in Transmissible Spongiform Encephalopathies (TSE) research.
Biochem/physiol Actions
Unit Definition
also commonly purchased with this product
comparable product
related product
suggested gloves for splash protection
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
Regulatory Information
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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705578-5MG-PW
PL860-CGA/SHF-1EA
MMYOMAG-74K-13
1000309185
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For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').
For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').
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How should I prepare solutions of Product P2308, Proteinase K?
Solutions can be prepared in 25-50 mM Tris-HCl buffer, pH 8.0, containing 1-5 mM Calcium chloride.
How should I store solutions of Product P2308, Proteinase K?
Stock solutions in 40% glycerol of at least 20 mg/ml can be stored in 10 mM Tris-HCl buffer, pH 7.5.with 1 mM calcium acetate (see product P4850). Solutions are also stable at pH 8 at 4°C.
What is the recommended pH range for Product P2308, Proteinase K?
Proteinase K is normally used in the pH range of 7.5-8.0.
What amount of Product P2308, Proteinase K, should I use for nucleic acid preparations?
Amounts for typical usage is 50-200 μg/mL.
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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Articles
Proteinase K is commonly used in molecular biology and biochemistry applications to digest structural proteins and enzymes. It is useful in removing nucleases that can degrade DNA and RNA, as well as in the isolation of intact genomic DNA from various sources.
The use of Pro K in combination with other reagents, such as detergents and chaotropic agents, can help to disrupt the cell membranes and release DNA from tissue. This is particularly important for downstream applications such as PCR, sequencing, and other molecular biology techniques that require pure and intact DNA.
In blood DNA extraction, Proteinase K, an enzyme commonly used to degrade proteins, can help break down the cellular and nuclear membranes, releasing DNA from the cells that protect it from degradation and increase purity/yield making it more suitable for various molecular biology techniques.
The cost of proteinase K can vary depending on the source, purity, manufacturing process and vendor’s quality management system. It is important to balance the cost with the desired quality, performance, documentation and technical/quality support to select the optimal Proteinase K for the intended application
Protocols
The GenElute™ Blood Genomic DNA Kit Protocol provides a simple and convenient way to isolate pure genomic DNA from fresh or aged whole blood.
The GenElute Mammalian Genomic DNA Purification Kit Protocol describes the isolation of pure, high molecular weight DNA from a variety of mammalian sources.
Proteinase K (EC 3.4.21.64) activity can be measured spectrophotometrically using hemoglobin as the substrate. Proteinase K hydrolyzes hemoglobin denatured with urea, and liberates Folin-postive amino acids and peptides. One unit will hydrolyze hemoglobin to produce color equivalent to 1.0 μmol of tyrosine per minute at pH 7.5 at 37 °C (color by Folin & Ciocalteu's Phenol Reagent).
GenElute™ Bacterial Genomic DNA Kit protocol describes a simple and convenient way for the isolation of pure genomic DNA from bacteria.
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