GEN-3000 Chapter Notes - Chapter 15: Operon, Repressor, Conformational Change
30 Nov 2017
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Operon = series of genes + promoter + operator. Gene a => gene b => gene c. Operon is turned off but can be turned on. Negative inducible = the operon is originally turned off but it can be turned on. Originally the repressor is bound to the operator. The repressor goes through a conformational change in the presence of the inducer which makes it so the repressor cant bind to the operon. Operon is turned on but can be turned off. A repressor binds to the operon and acts to prevent transcription while a repressible operon is one that can be turned off but is presently turned on. When a certain product of transcription is present it will bind to the. When a certain product of transcription is present it will bind to the repressor and activate it. The repressor starts off as inactive allowing initial transcription.
