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Problem:

An E. coli mutant was isolated that could not grow with glucose as the sole carbon source. Upon examination it was found that the mutant had a defective HPr protein.

Required:

Question 1: Why would a defective HPr lead to this phenotype?

Question 2: In addition to not being able to use glucose as a carbon source, this mutant grew poorly in the presence of lactose or arabinose. Provide an explanation for this observation.

Could someone help to explain the answer of these questions.

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  • Category:- Biology
  • Reference No.:- M91170762

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