Antibiotic Resistance

3) Finally, read the review of the original paper (
Tie me up, Tie me down: Inhibiting RNA polymerase) and answer the following questions briefly.  Come to class tomorrow with any questions you have about this paper.



a) Explain how a search for resistant mutants can give information as to the antibiotic�s target and mechanism of action.


b) By adding the antibiotic (myx) at different times in a transcription reaction, the authors showed that myx inhibits RNA polymerase binding to double stranded DNA.  Explain.
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