Biology, 18.10.2019 04:30 Hudman57

The major virulence factor produced by c. diphtheriae is diphtheria toxin. the production of diphtheria toxin during infection is controlled by a repressor, dtxr. the activity of dtxr is regulated by iron, which acts as a corepressor. during an infection, the levels of iron available in the tissues for use by c. diphtheriae are low. what effect will the decreased iron availability have on the production of diphtheria toxin
a. the lack of corepressor binding to dtxr will lead to a loss of repression and an increase in the production of toxin.
b. the corepressor will not be able to interact with the operator and will cause an increase in the production of toxin.
c. the repressor will not be active, therefore toxin production will decrease.
d. without the compressor to interact with the operator, the repressor will stay bound to the promoter leading to a decrease in the amount of toxin.

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The major virulence factor produced by c. diphtheriae is diphtheria toxin. the production of diphthe...

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