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p53 is a protein that functions as a transcription factor, acting as a promoter for genes that lead to cell death in cells with damaged DNA. Sometimes cells also produce a protein called Mdm2 that also bonds with p53, preventing its attachment to DNA.

Which of the following is the MOST likely effect this would have?


Binding of Mdm2 to p53 would be beneficial to the regulation of damaged DNA.


Competitive inhibition by the Mdm2 could reduce p53 activity, resulting in an abnormal, cancerous cell.


Increased p53 activity could result in inappropriate apoptosis.


Decreased concentrations of unbound p53 could reduce cancerous activity in the cell.

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