The present specification relates to a transformed yeast strain capable of simultaneously utilizing xylose and glucose as carbon sources, a preparation method thereof and a biofuel production method using the same. The transformed yeast strain transforms a wild-type yeast strain incapable of using xylose as a carbon source and simultaneously convert glucose and xylose, thereby enabling high yield production of a biofuel. The economics and sustainability of the biofuel and biomaterial production processes can be highly enhanced by providing a strain which can easily be converted to a strain capable of producing a biofuel/material in a high yield through an additional modification.

Acetate is a potent microbial inhibitor which can affect the performance of yeast in ethanolic fermentation. The present disclosure provides a recombinant microbial host cell having (i) a first genetic modification for increasing the activity of one or more proteins that function in a first metabolic pathway to convert acetate into an alcohol in the microbial host cell; (ii) a second genetic modification for increasing the activity of one or more proteins that function in a second metabolic pathway to import glycerol in the recombinant microbial host cell (iii) a third genetic modification for increasing the activity of one or more proteins that function in a third metabolic pathway to convert a C5 carbohydrate into ethanol in the microbial host cell. The recombinant microbial host cell comprises and natively expresses native proteins that function in a fourth native metabolic pathway to produce glycerol in the microbial host cell.

Sedoheptulose, which is a saccharide falling within the categories of ketoses and heptuloses, is one of a small number of heptuloses occurring in nature. A method for producing sedoheptulose may use a bacterium, and/or may improve the productivity of sedoheptulose by the bacterium, and the bacterium. To solve this problem, provided are a method for producing sedoheptulose using a bacterium owing to the deletion or attenuation of a specific enzymatic function, a method for improving the productivity of sedoheptulose by the bacterium, and the bacterium.

The present invention relates to processes for producing ethanol comprising saccharifying cellulosic or starch-containing material and fermenting the saccharified material with a fermenting microorganism to produce ethanol. The fermenting organism is Saccharomyces cerevisiae strain MBG5151 (deposited under Accession No. Y-67971 at the Agricultural Research Service Culture Collection (NRRL), Illinois 61604 U.S.A.), Saccharomyces cerevisiae strain MBG5248 (deposited under Accession No. Y-68015 at the Agricultural Research Service Culture Collection (NRRL), Illinois 61604 U.S.A.) or a fermenting organism that has properties that the same or about the same as that of Saccharomyces cerevisiae MBG5151 or MBG5248.

Described is a method for the production of fructose-6-phosphate (F6P) from dihydroxyacetone phosphate (DHAP) and glyceraldehyde-3-phosphate (G3P) comprising the steps of: (a) enzymatically converting dihydroxyacetone phosphate (DHAP) into dihydroxyacetone (DHA); and (b) enzymatically converting the thus produced dihydroxyacetone (DHA) and glyceraldehyde-3-phosphate (G3P) into fructose-6-phosphate (F6P); or
comprising the steps of: (a′) enzymatically converting glyceraldehyde-3-phosphate (G3P) into glyceraldehyde; and (b′) enzymatically converting the thus produced glyceraldehyde together with dihydroxyacetone phosphate (DHAP) into fructose-1-phosphate (F1P); and (c′) enzymatically converting the thus produced fructose-1-phosphate (F1P) into fructose-6-phosphate (F6P).

Provided herein are programmable condensate protein systems and nucleic acid constructs encoding the same. The protein system enables modular targeting of proteins of interest. Protein-peptide interaction domains (PPIDs) are incorporated to functionalize engineered condensates with the attributes of the recruited protein, resulting in a modular system that allows for diverse facile and reprogrammable applications, including in enzyme clustering of metabolic pathways. Colocalizing specific metabolic enzymes in these condensates results in functionalized organelles with which can be used to manipulate the output of engineered metabolic pathways for the production of a pharmaceutical precursor.

The present invention pertains to a genetically modified saprotroph for the biotechnological production of erythritol and a method for the production of erythritol using said genetically modified saprotroph.

Described is a method for the production of fructose-6-phosphate (F6P) from dihydroxyacetone phosphate (DHAP) and glyceraldehyde-3-phosphate (G3P) comprising the steps of: (a) enzymatically converting dihydroxyacetone phosphate (DHAP) into dihydroxyacetone (DHA); and (b) enzymatically converting the thus produced dihydroxyacetone (DHA) and glyceraldehyde-3-phosphate (G3P) into fructose-6-phosphate (F6P); or
comprising the steps of: (a′) enzymatically converting glyceraldehyde-3-phosphate (G3P) into glyceraldehyde; and (b′) enzymatically converting the thus produced glyceraldehyde together with dihydroxyacetone phosphate (DHAP) into fructose-1-phosphate (F1P); and (c′) enzymatically converting the thus produced fructose-1-phosphate (F1P) into fructose-6-phosphate (F6P).

Provided is an engineered pathway that can function in a cell-free system, cellular system or a combination thereof to convert a sugar to a chemical or biofuel.

Sedoheptulose, which is a saccharide falling within the categories of ketoses and heptuloses, is one of a small number of heptuloses occurring in nature. A method for producing sedoheptulose may use a bacterium, and/or may improve the productivity of sedoheptulose by the bacterium, and the bacterium. To solve this problem, provided are a method for producing sedoheptulose using a bacterium owing to the deletion or attenuation of a specific enzymatic function, a method for improving the productivity of sedoheptulose by the bacterium, and the bacterium.