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    • 3. 发明授权
    • Alkaline protease
    • 碱性蛋白酶
    • US07101698B2
    • 2006-09-05
    • US10456479
    • 2003-06-09
    • Tsuyoshi SatoMitsuyoshi OkudaYasushi TakimuraNobuyuki SumitomoMasafumi NomuraTohru Kobayashi
    • Tsuyoshi SatoMitsuyoshi OkudaYasushi TakimuraNobuyuki SumitomoMasafumi NomuraTohru Kobayashi
    • C12N9/54C12N15/74C12P21/00C07K14/32
    • C07H21/04C12N9/54
    • The present invention relates to an alkaline protease having a prepro sequence, wherein the prepro sequence is a mutant sequence of the amino acid sequence of SEQ ID NO: 1 or an amino acid sequence having 80% or higher homology to the amino acid sequence of SEQ ID NO: 1, in which amino acid residues at (a) position 52, (b) position 75, and (c) position 142 of SEQ ID NO: 1, or amino acid residues at positions corresponding to these positions are substituted by the following amino acid residues: at position (a): aspartic acid or arginine, at position (b): alanine or arginine, and at position (c): lysine; and the alkaline protease, when in a mature form, has the amino acid sequence of SEQ ID NO: 2 or an amino acid sequence having a homology of 80% or higher to this amino acid sequence. The present invention also relates to, for example, a gene encoding the alkaline protease. According to the present invention, an alkaline protease increased in production can be produced. In particular, there can be efficiently produced an alkaline protease having an activity even in the presence of a fatty acid of high concentration and exhibiting excellent detergency against complex soils containing proteins and sebum.
    • 本发明涉及具有前序列的碱性蛋白酶,其中前序列是SEQ ID NO:1的氨基酸序列的突变序列或与SEQ ID NO:1的氨基酸序列具有80%以上同源性的氨基酸序列 SEQ ID NO:1的(a)位置52,(b)位置75和(c)位置142处的氨基酸残基或对应于这些位置的位置处的氨基酸残基被替换为SEQ ID NO: 以下氨基酸残基:位置(a):天冬氨酸或精氨酸,位置(b):丙氨酸或精氨酸,和位置(c):赖氨酸; 碱性蛋白酶以成熟形式具有SEQ ID NO:2的氨基酸序列或与该氨基酸序列同源性为80%以上的氨基酸序列。 本发明还涉及例如编码碱性蛋白酶的基因。 根据本发明,可以生产生产中增加的碱性蛋白酶。 特别是,即使在高浓度的脂肪酸的存在下也能够有效地生成具有活性的碱性蛋白酶,并且对于含有蛋白质和皮脂的复杂土壤表现出优异的去污力。