摘要:
Some HBL and NHE enterotoxins are known to cause food-borne diseases in humans. Enterotoxin-deficient mutants of member strains of the Bacillus cereus group that do not produce HBL, HBLa1, HBLa2, or NHE enterotoxins are disclosed. Enterotoxin-deficient mutants are suitable for use as biocontrol agents. Methods for making the mutants and for using the mutants are described.
摘要:
The invention provides an isolated genetically modified non-mammalian organism, wherein the activity of acyl-CoA: sterol acyltransferase/sterol O-acyltransferase (EC 2.3.1.26) and/or diacylglycerol acyltransferase/diacylglycerol O-acyltranferase (EC 2.3.1.20) and/or lecithin cholesterol acyl transferase/phospholipid: diacylglycerol acyltransferase (EC 2.3.1.158) and/or acyl CoA-wax alcohol acyltransferase (EC 2.3.1.75) is reduced or abolished in comparison with a corresponding wildtype organism, methods of use of such an organism, shuttle vehicles for making such an organism and methods for producing such an organism.
摘要:
The present invention relates to the identification of novel metallo-proteases (MP) in Gram-positive microorganisms. The present invention provides the nucleic acid and amino acid sequences for Bacillus MP. The present invention also provides host cells having a mutation or deletion of part or all of the gene encoding MP. The present invention also provides host cells further comprising nucleic acid encoding desired heterologous proteins such as enzymes. The present invention also provides cleaning compositions comprising an MP of the present invention.
摘要:
The present invention relates to methods for making recombinant thermophilic bacteria of the family Bacillaceae. In particular, recombinant thermophilic Bacillaceae are provided which have been engineered to produce butanol and/or butyrate. Preferably, heterologous nucleic acid molecules encoding one or more butanol or butyrate biosynthetic pathway enzymes are introduced into a thermophilic Bacillaceae in order to produce a recombinant thermophilic Bacillaceae which is capable of producing butanol. The Bacillaceae is preferably of the genus Geobacillus or Ureibacillus. The invention also relates to a method of producing butanol using the Bacillaceae of the invention.
摘要:
Variants of B. licheniformis alpha-amylase advantageously exhibit improved enzymatic performance. Suitable variants include those with an altered charge distribution on the surface of the enzyme or with altered active site residues. Structural modeling can inform the choice of amino acid modifications so that modified amino acids correspond to residues found in more active alpha amylases, for example. Compositions comprising the variants are useful in methods of cleaning surfaces, laundering textiles, desizing, treating starch, e.g., liquefaction and saccharification, and hydrolyzing biofilms off various substrates.
摘要:
The present invention relates to an isolated polynucleotide of the complete chromosome of Bacillus licheniformis. The present invention also relates to isolated genes of the chromosome of Bacillus licheniformis which encode biologically active substances and to nucleic acid constructs, vectors, and host cells comprising the genes as well as methods for producing biologically active substances encoded by the genes and to methods of using the isolated genes of the complete chromosome of Bacillus licheniformis.
摘要:
The present invention is directed to the identification of a protease prodomain that is capable of binding a corresponding protease with high affinity. The protease prodomain of the present invention is fused to a second protein to form a protease prodomain fusion protein. The presence of a protease prodomain protein in a fusion protein allows for easy and selective purification of the second protein by incubation with the corresponding protease.
摘要:
The present invention relates to novel JP170 like subtilases from wild-type bacteria, hybrids thereof and to methods of construction and production of these proteases. Further, the present invention relates to use of the claimed subtilases in detergents, such as a laundry or an automatic dishwashing detergent.
摘要:
The present invention relates to a method of constructing a variant of a parent Termamyl-like α-amylase, which variant has α-amylase activity and at least one altered property as compared to the parent α-amylase, comprises i) analysing the structure of the parent Termamyl-like α-amylase to identify at least one amino acid residue or at least one structural part of the Termamyl-like α-amylase structure, which amino acid residue or structural part is believed to be of relevance for altering the property of the parent Termamyl-like α-amylase (as evaluated on the basis of structural or functional considerations), ii) constructing a Termamyl-like α-amylase variant, which as compared to the parent Termamyl-like α-amylase, has been modified in the amino acid residue or structural part identified in i) so as to alter the property, and, optionally, iii) testing the resulting Termamyl-like α-amylase variant with respect to the property in question.
摘要:
The present invention relates to methods for producing variants of a parent JP170 subtilase and of a parent BPN′ subtilase and to JP170 and BPN′ variants having altered properties as compared to the parent JP170/BPN′ subtilase.