Proteinasa K from Tritirachium album

Proteinase K is a stable serine protease with broad substrate specificity. It degrades many proteins in the native state even in the presence of detergents. Proteinase K was isolated from a fungus able to grow on keratin and the enzyme can digest native keratin (hair), hence, the name "Proteinase K". The predominant site of cleavage is the peptide bond adjacent to the carboxyl group of aliphatic and aromatic amino acids with blocked alpha amino groups. It is commonly used for its broad specificity.

Útil para la inactivación proteolítica de nucleasas durante el aislamiento de ADN y ARN.

Útil para la inactivación proteolítica de nucleasas durante el aislamiento de ADN y ARN.
Elimina las endotoxinas que se unen a las proteínas catiónicas como la lisozima y la ribonucleasa A.
Se ha comunicado que es útil para el aislamiento de mitocondrias hepáticas, de levadura y de frijol mung
Determinación de la localización de las enzimas en las membranas
Tratamiento de cortes de tejido incluidos en parafina para exponer los sitios de unión de antígenos para el marcado con anticuerpos.
Digestión de proteínas de muestras de tejido cerebral para investigación de los priones en las encefalopatías espongiformes transmisibles (EET).

La proteinasa K es una serín proteasa estable y muy reactiva. La evidencia procedente de estudios de la estructura cristalina y molecular indica que la enzima pertenece a la familia subtilisina con una tríada catalítica en el sitio activo (ASP³⁹-HIS⁶⁹-ser²²⁴). Es estable en una amplia variedad de entornos: pH, sales amortiguadoras, detergentes (SDS) y temperatura. En presencia de SDS al 0,1 - 0,5 %, la proteinasa K conserva su actividad y digerirá una variedad de proteínas y nucleasas en preparaciones de ADN sin comprometer la integridad del ADN aislado.

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   1. Site quality assessment
   2. ISO 9001 certificate
   3. Detailed product specifications
   4. Relevant declarations/statements (e.g., animal origin content, BSE/TSE, nitrosamine)

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Una unidad hidrolizará la hemoglobina desnaturalizada en urea para producir color equivalente a 1,0 μmol de tirosina por minuto a pH 7,5 y a 37 °C (color por el reactivo Folin-Ciocalteu).

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