The repressor will then bind to the operator, stopping the manufacture of lactase. In molecular genetics, a repressor is a DNA- or RNA-binding protein that inhibits the expression of one or …

2 days ago · A repressor, as related to genomics, is a protein that inhibits the expression of one or more genes. The repressor protein works by binding to the promoter region of the gene (s), …

repressor: any protein that binds to DNA and thus regulates the expression of genes by decreasing the rate of transcription activator: any chemical or agent which regulates one or …

5 days ago · "Repressor." Vocabulary.com Dictionary, Vocabulary.com, https://www.vocabulary.com/dictionary/repressor. Accessed 10 Jan. 2026. Copy citation …

Once a repressor binds to its designated DNA sequence, it can physically obstruct the path of RNA polymerase, the enzyme responsible for transcribing DNA into RNA. This blockage …

In 1957, Pardee, Monod, and Jacob discovered that the lactose operon was controlled by a single master switch—a protein eventually called the repressor.

repressor, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

repressor (rɪˈprɛsə) n (Genetics) biochem a protein synthesized under the control of a repressor gene, which has the capacity to bind to the operator gene and thereby shut off the expression …

Definition of 'repressor' repressor in American English (rɪˈprɛsər ) noun something that represses; esp., a protein produced in a cell that prevents the synthesis of a specific enzyme

repressor definition: anything that suppresses or inhibits an action. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "repressor …