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J63710 Proteinase K, Ready-to-Use soln.

CAS Number

Stock No. Size Price ($) Quantity Availability
J63710-AA 5ml 227.00
J63710-AC 25ml 871.00
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Proteinase K, Ready-to-Use soln.


Chemical Properties

Liquid, 28.9 kDa
Storage & Sensitivity
Store at -20°C.
Miscible with water.


A stable and highly reactive serine protease; used for protein and nucleic acid isolation.Proteinase K is used in the purification of RNA and DNA from tissues or cell lines. It finds application in protein modification, determination of enzyme localization and inactivation of RNases/DNases during nucleic acid extraction. It is also used in mitochondria isolation and removal of endotoxins bound to cationic proteins like lysozyme and ribonuclease A. Further, it is involved in the treatment of paraffin embedded tissue sections in order to expose antigen binding sites for antibody labeling.


Minimum 400 units per ml. Protein concentration is 20 mg/ml in 10mM Tris-HCl, 1mM calcium acetate, pH 7.5 containing 50% glycerol. RNase and DNase free. One unit releases one micromole of Folin positive amino acids, measured as tyrosine, at 37°C and pH 7.5, using urea denatured hemoglobin as the substrate.Incompatible with strong oxidizing agents. Store in a cool place.

Literature References

Fränzel, B.; Fischer, F.; Steegborn, C.; Wolters, D. A. Proteinase K improves quantitative acylation studies. Proteomics 2015, 15 (1), 44-47.

Shishova, K. V.; Khodarovich, Y. M.; Lavrentyeva, E. A.; Zatsepina, O. V. Analysis of the localization of fibrillarin and sites of pre-rRNA synthesis in the nucleolus-like bodies of mouse GV oocytes after mild treatment with proteinase K. Russ. J. Dev. Biol. 2015, 46 (3), 127-136.

GHS Hazard and Precautionary Statements

Hazard Statements: H319-H334

Causes serious eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled.

Precautionary Statements: P284-P261-P280i-P305+P351+P338-P342+P311a-P501a

Wear respiratory protection. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If experiencing respiratory symptoms: Call a POISON CENTER/doctor. Dispose of contents/container in accordance with local/regional/national/international regulations.

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