摘要:
The invention provides isolated and recombinant phytase enzymes. In one aspect, the phytases are produced by modification of the wild type appA of E. coli. The enzyme can be produced from recombinant host cells. The phytases of the invention can be used to aid in the digestion of phytate where desired. In particular, the phytases of the invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients. The phytases of the invention can be thermotolerant and/or thermostable. Also provided are methods for obtaining a variant polynucleotide encoding a phytase and for obtaining a phytase with thermostability or thermotolerant at high or low temperatures.
摘要:
The invention provides isolated and recombinant phytase enzymes. In one aspect, the phytases are produced by modification of the wild type appA of E. coli. The enzyme can be produced from recombinant host cells. The phytases of the invention can be used to aid in the digestion of phytate where desired. In particular, the phytases of the invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients. The phytases of the invention can be thermotolerant and/or thermostable. Also provided are methods for obtaining a variant polynucleotide encoding a phytase and for obtaining a phytase with thermostability or thermotolerant at high or low temperatures.
摘要:
The invention provides isolated and recombinant phytase enzymes. In one aspect, the phytases are produced by modification of the wild type appA of E. coli. The enzyme can be produced from recombinant host cells. The phytases of the invention can be used to aid in the digestion of phytate where desired. In particular, the phytases of the invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients. The phytases of the invention can be thermotolerant and/or thermostable. Also provided are methods for obtaining a variant polynucleotide encoding a phytase and for obtaining a phytase with thermostability or thermotolerant at high or low temperatures.
摘要:
In one aspect, the invention provides a purified and modified phytase enzyme from Escherichia coli K12 appA phytase. The enzyme has phytase activity and improved thermal tolerance as compared with the wild-type enzyme. In addition, the enzyme has improved protease stability at low pH. Glycosylation of the modified phytase provided a further improved enzyme having improved thermal tolerance and protease stability. The enzyme can be produced from native or recombinant host cells and can be used to aid in the digestion of phytate where desired. In one aspect, the phytase of the present invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients.
摘要:
The invention provides chimeric cannulae polypeptides and nanotubules and methods for making and using them. In one aspect, the invention provides compositions and methods for the identification, separation or synthesis of proteins or ligands. In one aspect, the invention provides compositions and methods for making and using nanotubules. In one aspect, the invention provides compositions and methods for the selection and purification of chiral compositions from racemic mixtures. In one aspect, the chimeric proteins and polymers (e.g., nanotubules, tubules, bundles, balls, fibers, filaments, sheets, threads, textiles) of the invention comprise a detectable moiety, e.g., a fluorescent protein. In one aspect, the invention provides a flame retardant or heat resistant device comprising a sheeting, a covering, a coating or an adhesive comprising a chimeric protein of the invention.
摘要:
The invention relates to haloalkane dehalogenases and to polynucleotides encoding alkane dehalogenases. In addition methods of designing new dehalogenases and of use thereof are also provided. The dehalogenases have increased activity and at increased pH and temperature.
摘要:
The invention relates to haloalkane dehalogenases and to polynucleotides encoding the haloalkane dehalogenases. In addition methods of designing new dehalogenases and method of use thereof are also provided. The dehalogenases have increased activity and stability at increased pH and temperature.
摘要:
The invention relates to haloalkane dehalogenases and to polynucleotides encoding the haloalkane dehalogenases. In addition methods of designing new dehalogenases and method of use thereof are also provided. The dehalogenases have increased activity and stability at increased pH and temperature.
摘要:
The invention relates to haloalkane dehalogenases and to polynucleotides encoding the haloalkane dehalogenases. In addition methods of designing new dehalogenases and method of use thereof are also provided. The dehalogenases have increased activity and stability at increased pH and temperature.
摘要:
The invention relates to haloalkane dehalogenases and to polynucleotides encoding the haloalkane dehalogenases. In addition methods of designing new dehalogenases and method of use thereof are also provided. The dehalogenases have increased activity and stability at increased pH and temperature.