Title: repression
Long Title: IUPAC Gold Book - repression
DOI: 10.1351/goldbook.R05304
Status: current

Definition
Binding of a protein (repressor) to the operator sequence in an operon thus preventing the transcription of the following structural gene(s) into mRNA and consequently synthesis of protein (cf. enzyme repression).

Related Terms
- enzyme repression: https://goldbook.iupac.org/terms/view/E02158
- gene(s): https://goldbook.iupac.org/terms/view/G02604
- mRNA: https://goldbook.iupac.org/terms/view/M03857
- operon: https://goldbook.iupac.org/terms/view/O04301
- sequence: https://goldbook.iupac.org/terms/view/ST06775
- transcription: https://goldbook.iupac.org/terms/view/T06436

Source
- PAC, 1992, 64, 143. 'Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)' on page 164 (https://doi.org/10.1351/pac199264010143)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/R05304/html
- json: https://goldbook.iupac.org/terms/view/R05304/json
- xml: https://goldbook.iupac.org/terms/view/R05304/xml

Citation: Citation: 'repression' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.R05304
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Accessed: 2026-06-28T02:04:17+00:00