repressor

[ ri-pres-er ]

noun

1. represser.
2. Genetics. a protein that binds DNA at an operator site and thereby prevents transcription of one or more adjacent genes.

repressor

/ rɪˈprɛsə /

noun

1. 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

repressor

/ rĭ-prĕs′ər /

1. A protein that binds to an operator, blocking transcription of an operon and the enzymes for which the operon codes.

Word History and Origins

Origin of repressor¹

From Latin, dating back to 1955–60; repress, -tor

Example Sentences

In his principal work, the "Repressor of over much blaming of the Clergy," ed.

From Project Gutenberg

O repressor of foes, we will fight and either this one will slay us, or we shall slay him, O mighty-armed one.

From Project Gutenberg