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In genetics, a strain is said to be auxotrophic if it carries a mutation that renders it unable to synthesize an essential compound. For example, a yeast mutant with an inactivated uracil synthesis pathway gene is a uracil auxotroph (e.g., if the yeast Orotidine 5'-phosphate decarboxylase gene is inactivated, the resultant strain is a uracil ...
URA3 is often used in yeast research as a "marker gene", that is, a gene to label chromosomes or plasmids. URA3 encodes Orotidine 5'-phosphate decarboxylase (ODCase) , which is an enzyme that catalyzes one reaction in the synthesis of pyrimidine ribonucleotides (a component of RNA ).
Primary nutritional groups are groups of organisms, divided in relation to the nutrition mode according to the sources of energy and carbon, needed for living, growth and reproduction. The sources of energy can be light or chemical compounds; the sources of carbon can be of organic or inorganic origin.
Nutritional yeast (also known as nooch [4]) is a deactivated (i.e. dead) yeast, often a strain of Saccharomyces cerevisiae, that is sold commercially as a food product.It is sold in the form of yellow flakes, granules, or powder, and may be found in the bulk aisle of natural food stores.
Microbial food cultures are live bacteria, yeasts or moulds used in food production. Microbial food cultures carry out the fermentation process in foodstuffs. Used by humans since the Neolithic period (around 10 000 years BC) [1] fermentation helps to preserve perishable foods and to improve their nutritional and organoleptic qualities (in this case, taste, sight, smell, touch).
Protease viability marker: One can look at protease function in specimens if they wish to target viability in cells; this practice in research is known as "Protease Viability Marker Assay Concept". The actions of protease cease once a cell dies, so a clear-cut line is drawn in determining cell viability when using this technique. [5]
Yeast Metabolome Database; Content; Description: Metabolomics database: Data types captured: Yeast metabolite structures, metabolite descriptions, metabolite reactions, metabolite enzymes and transporters, yeast enzyme and transporter sequences, chemical properties, nomenclature, synonyms, chemical taxonomy, metabolite NMR spectra, metabolite GC-MS spectra, metabolite LC-MS spectra
The discovery of the Wee1 gene is accredited to Paul Nurse, who first identified it in fission yeast (Schizosaccharomyces pombe) in 1978. In his initial experiments, Nurse demonstrated Wee1 to be a negative regulator of mitosis, such that Wee1+ activity was critical in preventing premature mitosis in Cdc25+ (a mitotic inducer) yeast cells and increased Wee1+ expression could further delay cell ...