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Sagot :
So, the sensitivity to 5 - fluorocytosine can be imparted by the mutant yeast cytosine deaminase that has increased thermostability.
Prodrug gene therapy is a technique by which a non-toxic drug is converted into a cytotoxic drug by an enzyme that is produced by transfected tumor cells with a gene. Cytosine deaminase is among the important enzymes that facilitate the production of uracil from cytosine. It also plays a key role in inhibiting the synthesis of DNA and the functioning of RNA by converting 5 FC to 5 FU.
Due to the restricted thermostability of 5- fluorocytosine, cytosine deaminase's different forms have been limited.
In an experiment to study the half-life of yeast cytosine deaminase, cores of the yeast's hydrophobic ends were packed to distance it. An enzyme LCD-D92E was produced that increased the half-life.
So, the sensitivity to 5 - fluorocytosine can be imparted by the mutant yeast cytosine deaminase that has increased thermostability.
To know more about enzymes, refer to the below link:
https://brainly.com/question/17320375
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