Chromatin immunoprecipitation isolation, antibodies

Chromatin immunoprecipitation. You have used the technique of chromatin immunoprecipitation to isolate DNA fragments containing a DNA-binding protein of interest. Suppose that you wish to know whether a particular known DNA fragment is present in the isolated mixture. How might you detect its presence How many different fragments would you expect if you used antibodies to the lac repressor to perform a chromatin immunoprecipitation experiment in E. colil If you used antibodies to the pur repressor ... 

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