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A Lac repressor is a tetramer repressed when bound to the inducer. The trp repressor is a ____________________
Consider the following statements and choose the correct answer:
1. The structural genes direct the synthesis of cellular proteins through messenger RNA (mRNA)
2. The promoter gene determines whether or not the structural genes are to be repressed by the repressor
3. The regulator gene directs the synthesis of a protein which may be an active repressor or an inactive repressor
Lac repressor dissociates from its operator when the repressor binds to ____________
In a mero-diploid you have one I- and one I+ Repressor gene in the two lac operons. I+ is wild type while I- is a mutant which produces a repressor that doesn’t bind. What would be the functionality of the diploid?
The tac promoter is made by _____ region of trp promoter and _____ region of the lacUV5 promoter.
Which of the following statements regarding the regulation of trp operon expression by attenuation is correct?
Which of these systems give the best mode for turning trp operon off?
Which of these properties do not agree with trp operon attenuator?
If in an experiment you mutate the two trp codons in the attenuator to ala codon what will be the impact on repression?
Which of this mode of trp regulation is not possible in eukaryotes?