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 more genes by …

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 more genes by …

4 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), which prevents …

When a repressor binds to the operator region of a gene, it blocks the attachment of RNA polymerase, preventing transcription from occurring. This mechanism is essential for ensuring that genes are …

Rhymes for represser aggressor assessor compressor confessor depressor hairdresser necessar oppressor possessor processor professor repressor See All Rhymes for represser

(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 of the structural genes of an operon

In negative control, a gene is switched off by a repressor and is only expressed in the presence of a signal that removes the repressor from the gene. Positive and negative control may be exerted at the …

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

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