Words similar to ura

Example sentences for: ura

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The transformants lost their Tab +phenotype, and when crossed to cdc15Δ::TRP1 [pMET3-CDC15, URA3], the diploid yielded no spores that could bypass cdc15Δ (n = 40-50).
The strain is a derivative of VL6-48 with the ura3-52 gene replaced by the KanMX cassette [ 15 ] . Spheroplasts were generated as described previously [ 29 ] . Agarose plugs (60 ul) containing approximately 2 ug of high molecular weight DNA were prepared from normal human fibroblasts MRC-5 (ATCC) or from liver cells of the Tg.AC mouse [ 11 ] . Linearized TAR cloning vector (1 ug) was added to the plugs, treated with agarase, and mixed with yeast spheroplasts.
In our construct, we deleted this adaptor to prevent use of the start codon for translation; that would result in nonexpression of the functional URA3 gene and, therefore, an inability to grow in the absence of uracil.
PCR analysis confirmed that all twenty five colonies had lost the [ pMET3-cdc15-2, URA3 ] plasmid, indicating that they were true bypassers of cdc15Δ.
The resulting colonies were then grown in YPAD media (1% yeast extract, 2% peptone, 0.04% adenine, and 2% glucose) and plated on 5-FOA plates to select clones emerging by a second recombination event that eliminated the URA3 gene together with the additional copy of PPT1 . To confirm gene replacement, chromosomal DNA from these clones was used for PCR amplification of the region encoding HA-Ppt1p.