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- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Map%3A_Raven_Biology_12th_Edition/16%3A_Control_of_Gene_Expression/16.03%3A_Prokaryotic_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Courses/Reedley_College/Biology_for_Science_Majors_I/15%3A_Gene_Expression/15.03%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Workbench/Modern_Genetics/08%3A_Molecular_Genetics_II_-_Regulation_of_Gene_Expression/8.02%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Genetics/08%3A_Genes_and_Proteins/8.07%3A_Gene_Expression/8.7.03%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/09%3A_Regulation_of_Gene_ExpressionThis page discusses gene expression regulation in E. coli and eukaryotes, highlighting the tryptophan operon in bacteria and mechanisms like transcription, RNA processing, steroid response elements, a...This page discusses gene expression regulation in E. coli and eukaryotes, highlighting the tryptophan operon in bacteria and mechanisms like transcription, RNA processing, steroid response elements, and epigenetics in eukaryotes. It mentions techniques such as footprinting and chromatin immunoprecipitation for studying DNA-binding proteins and covers specialized topics, including cell-specific gene expression, imprinted genes, and ribozymes.
- https://bio.libretexts.org/Workbench/BIOL_190%3A_General_Biology_(OpenStax)/03%3A_Unit_III-_Genetics/3.06%3A_Gene_Expression/3.6.03%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/09%3A_Regulation_of_Gene_Expression/9.02%3A_The_Tryptophan_RepressorThis page explains the regulation of tryptophan synthesis in E. coli, which involves five enzymes from a clustered operon. When tryptophan is abundant, it binds to the Trp repressor, a homodimer that ...This page explains the regulation of tryptophan synthesis in E. coli, which involves five enzymes from a clustered operon. When tryptophan is abundant, it binds to the Trp repressor, a homodimer that attaches to the operator of the operon, inhibiting transcription of the genes for enzyme production. This mechanism ensures that enzymes are not synthesized when tryptophan is already present, effectively regulating the metabolic pathway.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_2e_(OpenStax)/03%3A_Unit_III-_Genetics/3.06%3A_Gene_Expression/3.6.03%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Courses/Norco_College/OpenStax_Biology_2e_for_Norco_College/16%3A_Gene_Expression/16.03%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Courses/American_River_College/BIOL_400%3A_Principles_of_Biology_(Wolfe)/04%3A_Untitled_Chapter_4/17%3A_Gene_Expression/17.02%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/3%3A_Genetics/16%3A_Gene_Expression/16.2%3A_Prokaryotic_Gene_RegulationThe DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the s...The DNA of prokaryotes is organized into a circular chromosome supercoiled in the nucleoid region of the cell cytoplasm. Proteins that are needed for a specific function, or that are involved in the same biochemical pathway, are encoded together in blocks called operons. For example, all of the genes needed to use lactose as an energy source are coded next to each other in the lactose (or lac) operon.
