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It's talking about mutations on the transcription of genes that inhibit the cell division. Also RNA polymerase binds to the promoter region.
Also, the question specifically (though in a very wordy, convoluted way) asked what the effect of the mutation on transcription was. DNA pol is not used in transcription, it is used in replication. RNA pol is used in transcription. In terms of increased or decreased binding, argining is polar/positively charged and proline is neutral/nonpolar, so there are fewer H-bonding sites, and thus decreased binding of the RNA pol.
Could this convoluted question also mean..........
that since the gene to make p53 is messed up due to the hydrogen bonds, RNA polymerase will not be able to bind to make the mRNA ... So there will be cancer? Because P53 is a tumor suppressor... lemme know thanks guys