#GeneRegulation couples transfers of information to transfers of mass and energy. The E. coli Trp-operon is often used as a simple example of gene reg. Genetic info transfers from #DNA to #proteins, including the synthesis of (1) a #repressor gene. In absence of tryptophan, the #operon induces the synthesis of the #metabolic #enzymes for its production (2). Tryptophan then binds the repressor (3)...

#GeneRegulation couples transfers of information to transfers of mass and energy. The E. coli Trp-operon is often used as a simple example of gene reg. Genetic info transfers from #DNA to #proteins, including the synthesis of (1) a #repressor gene. In absence of tryptophan, the #operon induces the synthesis of the #metabolic #enzymes for its production (2). Tryptophan then binds the repressor (3). TrpR thus carries information about Trp concentration to the operon, resulting in RNA pol stopping…