Question
Asked Dec 14, 2019
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2.) Give one example of a trans-acting regulatory protein. 

 

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Expert Answer

Step 1

A trans-acting regulation element:

A trans-acting regulation element in the context of the transcription is generally a DNA sequence which bears a gene.

This gene then encodes for a protein or other diffusible molecule or micro RNA. This encoded protein will be helpful in the regulation of a different target gene.

The trans-acting gene might be located on a unlike chromosome to the target gene. But the action is through the mediator protein or RNA formed by it.

Step 2

For example-

ArsR protein is a trans-acting regulatory protein:

The regulatory protein involved in the plasmid-encoded arsenical resistance operon is encoded by the arsR gene. In the absence of arsenic, ArsR acts on the arsRDABC operon as a repressor in t...

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