Abstract: Providing an alkaline protease exhibiting an improved solubility in a liquid detergent. A mutant alkaline protease consisting of the amino acid sequence represented by SEQ ID No: 2 or an amino acid sequence having 80% or more sequence identity therewith, in which at least one amino acid residue selected from the group consisting of the amino acid residues at predetermined positions of the amino acid sequence represented by SEQ ID No: 2 or corresponding positions thereto are substituted.

Abstract: Providing an alkaline protease exhibiting an improved solubility in a liquid detergent. A mutant alkaline protease consisting of the amino acid sequence represented by SEQ ID No: 2 or an amino acid sequence having 80% or more sequence identity therewith, in which at least one amino acid residue selected from the group consisting of the amino acid residues at predetermined positions of the amino acid sequence represented by SEQ ID No: 2 or corresponding positions thereto are substituted.

Abstract: The present invention relates to alkaline cellulase variants having an amino acid sequence which exhibits at least 95% homology with the amino acid sequence of SEQ ID NO: 2, wherein said alkaline cellulase variant is mutated to include at least one substitution at (a) position 10, (b) position 16, (c) position 22, (d) position 33, (e) position 39, (f) position 76, (g) position 109, (h) position 242, (i) position 263, (j) position 308, (k) position 462, (l) position 466, (m) position 468, (n) position 552, (o) position 564, or (p) position 608 in SEQ ID NO: 2, or at a position corresponding thereto, wherein said alkaline cellulase variant has alkaline cellulase activity. The present invention also relates to a gene encoding the variant; a vector containing the gene; a transformant containing the vector; and a detergent composition containing the alkaline cellulase variant.

Abstract: Provided in the present invention are an alkaline cellulase variant obtained by using a cellulase having an amino acid sequence exhibiting at least 90% homology with the amino acid sequence represented by SEQ. ID NO:1 and substituting the amino acid residue of the cellullase at (a) position 10, (b) position 16, (c) position 22, (d) position 33, (e) position 39, (f) position 76, (g) position 109, (h) position 242, (i) position 263, (j) position 308, (k) position 462, (l) position 466, (m) position 468, (n) position 552, (o) position 564, or (p) position 608 in SEQ. ID NO:1, or at a position corresponding thereto with another amino acid residue; a gene encoding the variant; a vector containing the gene; a transformant containing the vector; and a detergent composition containing the alkaline cellulase variant.

Abstract: Detergent compositions containing protopectinase whose optimum pH for the reaction is 7.0 or higher when protopectin or polygalacturonic acid is used as a substrate. The detergent compositions are endowed with remarkable detergency against mud soil.