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| Description: Step 1: The regulator gene R encodes a repressor molecule, which can bind to the operator (O) and thereby inhibit transcription of the adjacent structural genes. Step 2: A small-molecule inducer complexes with the repressor, thereby altering the equilibrium between the conformational states of the repressor. Step 3: The repressor–inducer complex binds less tightly to the operator. Step 4: This loosening facilitates transcription of the structural genes, resulting in production of messenger RNA—that is, an RNA copy of the structural genes. Step 5: The mRNA sequence is translated into proteins. Picture Stats: Views: 335 Filesize: 37.84kB Height: 180 Width: 437 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35028 |