Abstract:
The present application provides genetically modified fungal organisms that produce enzyme mixtures exhibiting enhanced hydrolysis of cellulosic material to glucose, enzyme mixtures produced by the genetically modified fungal organisms, and processes for producing glucose from cellulose using such enzyme mixtures.
Abstract:
The invention provides variants of the Thermoanaerobacter brockii CglT beta-glucosidase that have improve beta-glucosidase activity compared to the wild type enzyme. The invention also provides polynucleotides that encode the variants, as well as methods of producing the variants, enzyme compositions comprising the variants, and methods for using the variants in industrial applications.
Abstract:
The present invention provides improved fungal strains. In some embodiments, the improved fungal strains find use in hydrolyzing cellulosic material to glucose. The present invention also provides a fungal cell that has been genetically modified to reduce the amount of endogenous cellobiose dehydrogenase activity that is secreted by the cell, wherein the fungal cell is from the family Chaetomiaceae, wherein said cell comprises a deletion in the cellobiose dehydrogenase 1 ( cdhl ) gene.
Abstract:
The present invention relates to compositions and methods for the screening of biocatalysts. In particular, the present invention relates to methods of screening novel plant biocatalysts in plants and plant products.
Abstract:
The invention provides variants of the Thermoanaerobacter brockii CglT beta-glucosidase that have improve beta-glucosidase activity compared to the wild type enzyme. The invention also provides polynucleotides that encode the variants, as well as methods of producing the variants, enzyme compositions comprising the variants, and methods for using the variants in industrial applications.
Abstract:
The invention relates to C1 lignocellulose degradation enzyme nucleic acid and protein sequences and expression of recombinant C1 lignocellulose degradation enzymes. The invention provides methods for degrading a cellulosic biomass by contacting the biomass with a recombinant C1 lignocellulose degradation enzyme of the invention.
Abstract:
The invention relates to recombinantly produced ß-Glucosidase Variants with enhanced thermoactivity compared to naturally occurring proteins. The invention also provides methods for producing a variant ß-glucosidase polypeptide with improved thermoactivity by identifying performance sensitive positions in a target ß- glucosidase polypeptide and substituting the residue at that position with a thermoactivity enhancing residue.
Abstract:
The present invention provides various GH61 protein variants comprising various amino acid substitutions. The GH61 protein variants have an improved ability to synergize with cellulase enzymes, thereby increasing the yield of fermentable sugars obtained by saccharification of biomass. In some embodiments, sugars obtained from saccharification are fermented to produce numerous end-products, including but not limited to alcohol.
Abstract:
The invention relates to C1 lignocellulose degradation enzyme nucleic acid and protein sequences and expression of recombinant C1 lignocellulose degradation enzymes. The invention provides methods for degrading a cellulosic biomass by contacting the biomass with a recombinant C1 lignocellulose degradation enzyme of the invention.
Abstract:
The invention relates to expression of a recombinant C1 β-glucosidase. The invention also provides methods for producing a fermentable sugar from cellobiose by contacting celiobiose with a recombinant host cell comprising a polynucleotide sequence encoding C1 β-glucosidase, operably linked to heterologous promoter, under conditions in which β- glucosidase is expressed and secreted by the cell and the cellobiose is enzymatically converted by said β-glucosidase to glucose. Methods of the invention may be used for conversion of a biomass substrate to a fermentable sugar, and ultimately to ethanol or other biofuel.