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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 ...
Selectable markers allow scientists to separate non-recombinant organisms (those which do not contain the selectable marker) from recombinant organisms (those which do); that is, a recombinant DNA molecule such as a plasmid expression vector is introduced into bacterial cells, and some bacteria are successfully transformed while some remain non-transformed.
Another method of selection is the use of certain auxotrophic markers that can compensate for an inability to metabolise certain amino acids, nucleotides, or sugars. This method requires the use of suitably mutated strains that are deficient in the synthesis or utility of a particular biomolecule, and the transformed cells are cultured in a ...
FEMS Yeast Research is a peer-reviewed scientific journal focusing on yeast and yeast-like organisms. The journal was established in 2001. The journal was established in 2001. It is published by Oxford University Press on behalf of the Federation of European Microbiological Societies and the editor-in-chief is John Morrissey.
Yeast artificial chromosomes (YACs) are genetically engineered chromosomes derived from the DNA of the yeast, Saccharomyces cerevisiae, which is then ligated into a bacterial plasmid. By inserting large fragments of DNA, from 100–1000 kb, the inserted sequences can be cloned and physically mapped using a process called chromosome walking .
Berberine, a plant compound traditionally used in herbal medicine, is today commonly stocked on the shelves of health food stores and pharmacies as a supplement. Beyond weight loss, berberine also ...
You could save this video to show to anyone who uses that phrase, and you'll catch them off guard for sure. Sadly, viewers won't see Petunia the pink piglet fly for very long.
This art supply kit includes three sketchbooks, graphite, charcoal, watercolor and metallic pencils, markers, colored pencils and all of the accessories a “budding artist” could need, as ...