Gene regulation — definition?
Process controlling gene expression levels.
Operon — structure?
Cluster of genes with shared promoter and operator.
Promoter — role?
Binds RNA polymerase to start transcription.
Gene Regulation — definition?
Process controlling gene expression ON/OFF.
Operon — what?
Cluster of related genes with single promoter.
Promoter — role?
Initiates transcription by RNA polymerase binding.
Operator — function?
Repressor binds to block transcription.
Structural Genes — function?
Code for proteins, e.g., lacZ, lacY, lacA.
Repressor — role?
Binds to operator to prevent transcription.
Lactose — function?
Inducer that inactivates repressor, enables transcription.
Answer 10 questions on Gene Regulation in Bacteria.
1. What is a repressor protein in gene regulation mechanisms?
2. What is the name of the gene that encodes the repressor protein in the lac operon?
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