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can someone explain the importance of this
I've only come across the lac operon in E.coli, but it might be present in human cells also.
"The lac operon encodes proteins required to import and digest the disaccharide lactose". In the presence of lactose, the lac repressor is turned off allowing the lac operon to produce the proteins to import and digest lactose. There is no point having the lac operon active if there is no lactose present.
Without the lac operon lactose cannot be utilised
I'm not sure what clinical relevance this has, but this is the importance of it.
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