Abstract: The present strains and methods relate to yeast cells that over-overproduce selected endogenous proteins having a high amino acid content of a selected amino acid. The yeast can be used in a conventional bioethanol production facility to produce alcohol along with increased amounts of a selected amino acid, resulting in increased quality and commercial value of fermentation products and co-products, such as animal feed ingredients.

Abstract: Described are compositions and methods relating to yeast having a genetic mutation that results in decreased amounts of Cdc42 effector proteins, resulting in increased alcohol and lysine production. Such yeast is well-suited for use commercial alcohol production to increase yields and to increase the value of Such yeast is well-suited for use commercial alcohol production to increase yields and to increase the value of amino-acid-containing, fermentation-co-products.

Abstract: Described are strains and methods relating to genetically-engineered yeast cells that overproduce lysine in a tunable manner by altering feedback inhibition of the lysine synthetic pathway by way of the LYS20 and LYS21 homocitrate synthase polypeptides. The yeast can be used in a conventional bioethanol production facility to produce alcohol along with increased amounts of lysine, resulting in increased quality and commercial value of fermentation products and co-products, such as animal feed ingredients.

Abstract: Described are compositions and methods related to hybrid yeast that produces an increased amount of ethanol from starch-containing substrates compared to its parental yeast. Such yeast is well-suited for use in fuel alcohol production to increase yield.

Abstract: Described are compositions and methods relating to modified yeast that overexpress fumarate reductase. The yeast cells have an increased fermentation rate compared to their parental cells. Such yeast cells are particularly useful for large-scale ethanol production from starch substrates where an increased rate of ethanol production is desirable.

Abstract: Described are compositions and methods relating to yeast cells having a genetic mutation that give rise to increased alcohol production, particularly under high dissolved solids growth conditions. Such yeast is well-suited for use in alcohol production to reduce fermentation time and/or increase yields.

Abstract: Described are compositions and methods relating to yeast having a genetic mutation that results in increased alcohol production and tolerance, including increased ethanol production and increased butanol tolerance. Such yeast is well-suited for use in alcohol and butanol production to increase yields.

Abstract: Described are compositions and methods relating to modified yeast cells that overexpress a DNA polymerase II subunit, resulting in increased alcohol production. Such yeast cells are well-suited for use in commercial fuel alcohol production to increase yield.