transcription of the structural genes in an inducible operon

Inducer is a chemical (most often a substrate or any other metabolite) which inactivates the repressor of an operon. The inducer binds with the repressor, forming a repressor-inducer complex. This complex prevents the repressor from binding with the operator..

These genes produce mRNAs (transcription), which in turn synthesize specific polypeptides on the ribosomes (translation). The polypeptides so formed act as enzymes to catalyse some metabolic reaction in the cell. An operon may have one or more structural ..

These genes transcribe mRNAs, which are translated by ribosomes and tRNAs into the polypeptides. The latter function as enzymes. The trytophan operon comprises 5 structural genes denoted as E, D, C, B, and ..

It controls the operator gene in cooperation with a substance called co repressor present in the cytoplasm. The regulator gene codes for a protein named aporepressor. The latter combines with the co-repressor, and aporepressor-co-repressor complex joins the operator gene..

In eukaryotes, the genes that code for the enzymes needed to catalyse the various steps of a particular metabolic pathway may not be adjacent or even be in different chromosomes. However, these genes are regulated by operon model as in bacteria. Both the inducible..

This gene lies adjacent to the operator gene. It marks the site where the RNA polymerases enzyme binds. When the operator gene is turned on, this enzyme moves over the operator gene to the structural genes, and transcription sta..

An operon is the unit of transcription. When excess protein is present, it is no longer economical for the cell to use up its energy and materials in the synthesis of enzymes that are not immediately needed. Hence, the protein synthesis is stopped. This is clearly advantag..

Advantage of the Regulation of Gene Action - An operon is the unit of transcription. When excess protein is present, it is no longer economical for the cell to use up its energy and materials in the synthesis of enzymes that are not immediately needed. Hence, the prote..

Protein synthesis is a controlled process in which a given protein is synthesised in the cell only when it is necessary. When a particular protein is to be synthesised the specific gene has to express and initiate transcription. The mechanism that stimulates the expression of..

A repressor is a protein produced by a regulator gene. It is called a regulatory protein as it serves to turn off the operator gene by binding with the latter. With this binding, the transcription of mRNA by a structural gene stop..