摘要:
Alkaline cellulases having an optimum pH in an alkaline range and being stable over a broad pH range are produced by microorganisms which belong to the genus Bacillus and grow in a neutral medium.These alkaline cellulases are rarely inhibited by ingredients ordinarily incorporated in detergents such as surface active agents, proteinases and chelating agents, so that they can be conveniently used in detergent compositions.
摘要:
Novel alkaline cellulase K, CMCase I and CMCase II are obtained by isolation from a culture product of Bacillus sp KSM-635.These enzymes stably work in a wide range including an alkaline side, and their activity is shown even at low temperatures. Further, they have a strong resistance to surface active agents, chelating agents and proteinases. Therefore, they can be effectively utilized not only as an additive for clothing detergents, but also as a biomass and in other fields.
摘要:
DNA frangments containing an alkaline cellulase K gene, which comprise about 4.0, about 2.4 and about 1.9 kilo base pairs, respectively, each having a specific restruction map, recombinant plasmids containing any of these DNA fragments, and recombinant microorganisms harboring any of said plasmids.The alkaline cellulase K gene is derived from a bacterial strain which belongs to the genus Bacillus and is alkalophilic, that is, capable of revealing an optimum growth in an alkaline pH region.
摘要:
A novel alkaline cellulase is disclosed. The alkaline cellulase is produced by Bacillus sp KSM-635 (FERM BP-1485) and possesses: (1) C.sub.x enzyme activity to act on carboxymethyl cellulose and weak C.sub.1 enzyme .beta.-glucosidase activities, (2) substrate specificity to act on carboxymethyl cellulose, cellulose cotton, Avicel, filter paper, cellobiose, and p-nitrophenyl cellobioside, (3) a working pH range of 4-12 and an optimum pH range of 9-10, (4) stable pH range of 4.5-10.5 when allowed to stand at 40.degree. C. for 10 minutes, and (5) working temperature range of 10.degree.-65.degree. C. and optimum temperature range at around 40.degree. C. Its activity is not inhibited by chelating agents nor by surface active agents. It is particularly effective as an additive for laundry detergent compositions.
摘要:
The present invention provides: a nucleotide sequence encoding alkaline pullulanase and exhibiting both alkaline &agr;-amylase and alkaline pullulanase activity; a nucleotide sequence encoding alkaline &agr;-amylase possessing an amino acid sequence described in SEQ ID NO:3; a nucleotide sequence encoding alkaline pullulanase possessing an amino acid sequence described in SEQ ID NO:4; recombinant DNAs containing these nucleotide sequences, and transformed microorganisms harboring the recombinant DNAs. The technique of the present invention enables mass production of alkaline pullulanase exhibiting both alkaline &agr;-amylase and alkaline pullulanase activity.
摘要翻译:本发明提供:编码碱基支链淀粉酶并表现出碱性α-淀粉酶和碱性支链淀粉酶活性的核苷酸序列; 编码具有SEQ ID NO:3所述的氨基酸序列的碱性α-淀粉酶的核苷酸序列; 编码具有SEQ ID NO:4所述的氨基酸序列的碱基支链淀粉酶的核苷酸序列; 含有这些核苷酸序列的重组DNA和携带重组DNA的转化微生物。 本发明的技术能够大量生产表现出碱性α-淀粉酶和碱性支链淀粉酶活性的碱性支链淀粉酶。
摘要:
The present invention provides a DNA fragment encoding alkaline liquefying α-amylase, recombinant DNA containing the DNA fragment, a transformed microorganism harboring the recombinant DNA, as well as a method for producing alkaline liquefying α-amylase using the transformant. The method of the present invention enables mass production of alkaline liquefying α-amylase useful as a detergent component.The present invention is directed to a liquefying alkaline alphα-amylase, and a DNA encoding for the same and functional fragments thereof.
摘要:
The present invention provides a DNA fragment encoding alkaline pullulanase exhibiting alkaline &agr;-amylase activity, alkaline &agr;-amylase possessing both an amino acid sequence described in SEQ ID NO:3 and a DNA fragment encoding the amylase, alkaline pullulanase possessing both an amino acid sequence described in SEQ ID NO:4 and a DNA fragment encoding the pullulanase, recombinant DNAs containing these DNA fragments, and transformed microorganisms harboring the recombinant DNAs. The technique of the present invention enables mass production of alkaline pullulanase exhibiting alkaline &agr;-amylase activity.
摘要翻译:本发明提供了编码具有碱性α-淀粉酶活性的碱性支链淀粉酶的DNA片段,具有SEQ ID NO:3所示的氨基酸序列的碱性α-淀粉酶和编码具有氨基酸序列的淀粉酶,碱基支链淀粉酶的DNA片段 和编码支链淀粉酶的DNA片段,含有这些DNA片段的重组DNA和含有重组DNA的转化微生物。 本发明的技术能够大量生产显示碱性α-淀粉酶活性的碱性支链淀粉酶。
摘要:
The invention relates to a mutant &agr;-amylase having an amino acid sequence obtained by making deletion or replacement by another arbitrary amino acid residue of at least a methionine residue at the 202-position or a position homologous thereto among amino acid residues set forth in SEQ ID NO:1, which constitute a liquefying alkaline &agr;-amylase, a gene thereof, and a detergent composition comprising the mutant &agr;-amylase. The mutant &agr;-amylase has the optimum pH in an alkaline range, an excellent &agr;-amylase activity, and high and lasting resistance to oxidizing agents, and is hence particularly useful as a component of detergent compositions containing a bleaching agent and an oxidizing agent.
摘要翻译:本发明涉及一种具有氨基酸序列的突变型α-淀粉酶,该氨基酸序列是通过在SEQ ID NO:1所示的氨基酸残基之间至少含有202位的甲硫氨酸残基或其同源位置的另外任意氨基酸残基进行缺失或替换而获得的 ID NO:1,其构成液化碱性α-淀粉酶,其基因和包含突变型α-淀粉酶的洗涤剂组合物。 突变型α-淀粉酶在碱性范围内具有最佳pH,优异的α-淀粉酶活性和对氧化剂的高持久耐受性,因此特别可用作含有漂白剂和氧化剂的洗涤剂组合物的组分。