4-Genetics-Nucleic Acid-Regions-Regulation

operon

Genes and cistrons have control regions {operon}, where repressors bind to prevent transcription.

repressor gene

Genes {repressor gene} can make repressors, which bind to operator regions.

operator region of gene

Repressors bind to operon regions {operator region} that precede coding regions.

promoter region

RNA polymerase binds to regions {promoter region} just before coding regions. Repressors block RNA polymerase binding. Derepressors can bind to repressors at allosteric sites to release repressors from operators. Corepressors can bind to repressors to aid repression. Inducers can bind to repressors to block repression.

zinc finger

RNA-polymerase-III 50-base internal-control regions have two regions {zinc finger} that bind zinc.

primer DNA

Oligonucleotides {primer DNA} can start polymerization by DNA polymerase.

CpG island

Repeated CGs {CpG island} can be in regulatory DNA.

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Date Modified: 2022.0225