Abstract:
The present invention relates to variant EGIII cellulases that have improved stability and/or performance. The variant cellulases have replacements at sensitive residues to improve stability and/or performance.
Abstract:
The present invention is directed to cellulase compositions which share unique highly conserved regions with a known useful cellulase. More specifically, the present invention relates to a series of newly discovered enzymes from fungi and bacteria which are related by virtue of having at least one of five important conserved amino acid sequences which are also present in EGIII.
Abstract:
Methods are provided for preparing improved fermentation strains of the family Enterobacteriaceae which comprise the steps of eliminating the cryptic plasmid from the progenitor strain thereby creating the improved strain. Methods for reducing the mobilization properties of resident plasmids in an Enterobacteriaceae strain containing a cryptic plasmid are also provided. The present invention provides the nucleic acid sequence of pS, a cryptic plasmid found in Pantoea which can be used to identify the cryptic plasmid in strains of Enterobacteriaceae.
Abstract:
The present invention relates to methods of obtaining genes for novel enzymes which share certain conserved sequences with EGIII from Trichoderma reesei. These EG III like cellulases comprise an amino acid sequence comprising therein an amino acid string selected from the group consisting of: (a)Asn-Asn-(Leu/Phe/Lys/Ile)-Trp-(SEQ ID NO: 1) Gly (b)Glu-(Leu/Phe/Ile)-Met-Ile-Trp(SEQ ID NO: 2) (c)Gly-Thr-Glu-Pro-Phe-Thr;(SEQ ID NO: 3) (d)(Ser/Tyr/Cys/Trp/Thr/Asn/Lys/(SEQ ID NO: 42) Arg)-(Val/Pro)-(Lys/Ala)-(Ser/ Ala)-(Tyr/Phe); (e)Lys-Asn-Phe-Phe-Asn-Tyr.(SEQ ID NO: 5)
Abstract:
The use is provided of a composition as a feed additive which comprises one or more endoglucanases, and 0–20% by weight, based upon the content of cellulase proteins in the composition, of a cellobiohydrolase. The endoglycanases may be one or more of EGI, EGII, EGIII and any functionally active derivative of any thereof. Such endoglucanases may be obtained from a genetically modified strain of the fungus Trichoderma. Also provided is an enzyme-based feed additive which comprises EGI and/or EGII which lack the cellulose binding domain, and 0–20% by weight, based upon the content of cellulase proteins in the additive, of a cellobiohydrolase. A further enzyme-based feed additive is provided which comprises a cereal-based carrier, one or more endoglucanases, and 0–20% by weight, based upon the content of cellulase proteins in the additive, of a cellobiohydrolase. Such enzyme-based feed additives can be incorporated into a cereal-based feed which includes one or more of barley, wheat, triticale, rye and maize. The feed additive has the advantage of improving the feed conversion ratio and/or increasing the digestibility of a cereal-based feed in which it is included.
Abstract:
Methods are provided for preparing improved fermentation strains of the family Enterobacteriaceae which comprise the steps of eliminating the cryptic plasmid from the progenitor strain thereby creating the improved strain. Methods for reducing the mobilization properties of resident plasmids in an Enterobacteriaceae strain containing a cryptic plasmid are also provided. The present invention provides the nucleic acid sequence of pS, a cryptic plasmid found in Pantoea which can be used to identify the cryptic plasmid in strains of Enterobacteriaceae.
Abstract:
The use is provided of a composition as a feed additive which comprises one or more endoglucanases, and 0-20% by weight, based upon the content of cellulase proteins in the composition, of a cellobiohydrolase. The endoglycanases may be one or more of EGI, EGII EGIII and any functionally active derivative of any thereof. Such endoglucanases may be obtained from a genetically modified strain of the fungus Trichoderma. Also provided is an enzyme-based feed additive which comprises EGI and/or EGII which lack the cellulose binding domain, and 0-20% by weight, based upon the content of cellulase proteins in the additive, of a cellobiohydrolase. A further enzyme-based feed additive is provided which comprises a cereal-based carrier, one or more endoglucanases, and 0-20% by weight, based upon the content of cellulase proteins in the additive, of a cellobiohydrolase. Such enzyme-based feed additives can be incorporated into a cereal-based feed which includes one or more of barley, wheat, tricale, rye and maize. The feed additive has the advantage of improving the feed conversion ratio and/or increasing the digestibility of a cereal-based feed in which it is included.
Abstract:
The present invention relates to variant EGIII cellulases that have improved stability and/or performance. The variant cellulases have replacements at sensitive residues to improve stability and/or performance.
Abstract:
The present invention relates to variant EGIII cellulases which have improved stability and/or performance. The variant cellulases have replacements at sensitive residues to improve stability and/or performance.
Abstract:
A process for expressing extracellular .beta.-glucosidase in a filamentous fungus by expressing a fungal DNA sequence encoding enhanced, deleted or altered .beta.-glucosidase in a recombinant host microorganism is disclosed. Recombinant fungal cellulase compositions containing enhanced, deleted or altered expression of .beta.-glucosidase is also disclosed.