Novel alkaline protease - variants and washing - and cleaning agents containing these new alkaline protease - variants

摘要

The present invention relates to novel alkaline - protease - variants which are derived from natural or modified subtilisin - proteases deriving. They are provided in the count of the subtilisin from bacillus lentus with respect to the previously known subtilisins the two amino acid - positions 199i and 211g, and at least one for the stabilization of the molecule, which modification, preferably after point mutation the amino acids threonine in position 3 and / or isoleucine at position 4. as an example for this purpose, the variant b, lentus - alkaline protease s3t / v4i / v199i / l211g investigated. These variants are distinguished other protease - variants with respect to also by an improved contribution to detergency performance in washing - and cleaning agents from. Therefore, the present invention relates to by means of these enzymes, their possible uses in various technical processes, and in particular washing - and cleaning agents with these new alkaline protease - variants.