Operator Regions, Genetic MeSH Descriptor Data 2026

MeSH Heading: Operator Regions, Genetic
Tree Number(s): G02.111.570.080.689.650; G05.360.080.689.650; G05.360.340.024.686.645; G05.360.340.358.207.500.645
Unique ID: D009875
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D009875
Scope Note: The regulatory elements of an OPERON to which activators or repressors bind thereby effecting the transcription of GENES in the operon.
Entry Term(s): Operator Region; Operator Regions; Operator, Genetic
Previous Indexing: Genes, Regulator (1968-1985); Operon (1969-1985)
Public MeSH Note: 2009; see OPERATOR REGIONS (GENETICS) 1986-2008, see OPERON 1980-1985
History Note: 2009 (1986); use OPERON 1980-1985
Date Introduced: 1986/01/01
Last Updated: 2013/07/08

Allowable Qualifiers: drug effects (DE)

genetics (GE)

immunology (IM)

physiology (PH)

radiation effects (RE)

Chemical Phenomena [G02]
- Biochemical Phenomena [G02.111]
  - Molecular Structure [G02.111.570]
    - Base Sequence [G02.111.570.080]
      - Regulatory Sequences, Nucleic Acid [G02.111.570.080.689]
        
        Enhancer Elements, Genetic [G02.111.570.080.689.330]
        
        Insulator Elements [G02.111.570.080.689.390]
        
        Locus Control Region [G02.111.570.080.689.450]
        
        Operator Regions, Genetic [G02.111.570.080.689.650]
        
        Promoter Regions, Genetic [G02.111.570.080.689.675]
        
        Regulatory Sequences, Ribonucleic Acid [G02.111.570.080.689.687]
        
        Silencer Elements, Transcriptional [G02.111.570.080.689.755]
        
        Terminator Regions, Genetic [G02.111.570.080.689.810]
        
        Viral Packaging Sequence [G02.111.570.080.689.905]

Genetic Phenomena [G05]
- Genetic Structures [G05.360]
  - Base Sequence [G05.360.080]
    - Regulatory Sequences, Nucleic Acid [G05.360.080.689]

Genetic Phenomena [G05]
- Genetic Structures [G05.360]
  - Genome [G05.360.340]
    - Genome Components [G05.360.340.024]
      - Operon [G05.360.340.024.686]
        
        Lac Operon [G05.360.340.024.686.545]
        
        Operator Regions, Genetic [G05.360.340.024.686.645]
        
        rRNA Operon [G05.360.340.024.686.817]

Genetic Phenomena [G05]
- Genetic Structures [G05.360]
  - Genome [G05.360.340]
    - Genome, Microbial [G05.360.340.358]
      - Genome, Bacterial [G05.360.340.358.207]
        
        Operon [G05.360.340.358.207.500]
        
        Lac Operon [G05.360.340.358.207.500.545]
        
        Operator Regions, Genetic [G05.360.340.358.207.500.645]
        
        rRNA Operon [G05.360.340.358.207.500.817]

Operator Regions, Genetic Preferred

Operator, Genetic Narrower

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