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  2. Auxotrophy - Wikipedia

    en.wikipedia.org/wiki/Auxotrophy

    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 ...

  3. URA3 - Wikipedia

    en.wikipedia.org/wiki/URA3

    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 ).

  4. Candida albicans - Wikipedia

    en.wikipedia.org/wiki/Candida_albicans

    Next to the above-mentioned selection makers a few auxotrophic strains were generated to work with auxotrophic makers. The URA3 marker (URA3 blaster method) is an often-used strategy in uridine auxotrophic strains; however, studies have shown that differences in URA3 position in the genome can be involved in the pathogeny of C. albicans. [119]

  5. Selectable marker - Wikipedia

    en.wikipedia.org/wiki/Selectable_marker

    A selectable marker is a gene introduced into cells, especially bacteria or cells in culture, which confers one or more traits suitable for artificial selection.They are a type of reporter gene used in laboratory microbiology, molecular biology, and genetic engineering to indicate the success of a transfection or transformation or other procedure meant to introduce foreign DNA into a cell.

  6. Cloning vector - Wikipedia

    en.wikipedia.org/wiki/Cloning_vector

    Auxotrophic selection markers that allow an auxotrophic organism to grow in minimal growth medium may also be used; examples of these are LEU2 and URA3 which are used with their corresponding auxotrophic strains of yeast. [7] Another kind of selectable marker allows for the positive selection of plasmid with cloned gene.

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  8. What the only battleground Democrat to do better than Trump ...

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    Stein’s victory coattails will help. Cooper limited his time out of the state because he was worried that Robinson might use legislative tricks to seize power as acting governor.

  9. Genetic transformation - Wikipedia

    en.wikipedia.org/wiki/Genetic_transformation

    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 ...