center Gene Regulation

The Operon

The Operon

The Operon

Four regions of DNA control the production of a protein such as the enzyme Beta-galactosidease;
  • a structural gene that holds the codons for the amino acid sequence found in the enzyme.
  • an operator region right in front of the structural gene.
  • a promotor region where the RNA making enzyme will bind to the DNA.
  • a regulator gene which has a role in controling the transcription from the structural gene.

The combined region of the operator and structural gene is called an operon.

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© 1997, 1998, 1999, 2000 Professor John Blamire