Final answer:
The Adh2 promoter in Saccharomyces cerevisiae primarily regulates the expression of the alcohol dehydrogenase 2 enzyme, which is essential for ethanol fermentation in yeast.
Step-by-step explanation:
The Adh2 promoter in Saccharomyces cerevisiae is closely associated with the regulation of alcohol dehydrogenase 2 (ADH2), an enzyme involved in the metabolic process of ethanol fermentation. This promoter orchestrates the expression of the ADH2 gene, which is crucial during conditions where yeast cells must switch from aerobic respiration to fermentation, such as under hypoxic or anaerobic conditions. The ADH2 protein itself operates in the pathway that converts acetaldehyde to ethanol, which is a significant part of the fermentation process utilized by yeast cells in both brewing and baking applications, as detailed in the flood-specific accumulation of the enzyme in roots of plants like soybean under hypoxic conditions.
The Adh2 promoter in Saccharomyces cerevisiae is primarily associated with the regulation of alcohol dehydrogenase 2 (ADH2) gene expression. The ADH2 gene encodes an enzyme called alcohol dehydrogenase, which catalyzes the conversion of ethanol into acetaldehyde. The Adh2 promoter plays a crucial role in the expression of the ADH2 gene and is regulated by various factors such as carbon source availability and oxygen levels.