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What are a group of proteins that bind to the promoter or enhancer sequences to facilitate the binding of RNA polymerase to the promoter?
Transcription factors are proteins that bind to promoter or enhancer sequences to help recruit RNA polymerase to the promoter. They regulate the transcription of specific genes by promoting or inhibiting the binding of RNA polymerase to the DNA.
How does active CAP induce expression of the genes of the lactose operon?
Active CAP binds to the CAP site in the promoter region of the lactose operon. This binding helps RNA polymerase to efficiently initiate transcription of the genes in the operon, leading to their expression. The presence of cAMP is necessary for CAP to be active and bind to DNA.
How does the presence of lactose enable RNA polymerase to transcribe the lac genes?
The presence of lactose enables RNA polymerase to transcribe the lac genes by inducing a conformational change in the lac repressor protein. This change prevents the lac repressor from binding to the lac operator, allowing RNA polymerase to access the promoter region and initiate transcription of the lac genes.
What are the proteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter called?
transcription factor
Proeteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter are called?
Transcription factors.
What are a group of proteins that bind to the promoter or enhancer sequences to facilitate the binding of RNA polymerase to the promoter?
Transcription factors are proteins that bind to promoter or enhancer sequences to help recruit RNA polymerase to the promoter. They regulate the transcription of specific genes by promoting or inhibiting the binding of RNA polymerase to the DNA.
What are the different types of RNA polymerases and their promoters?
There are three different types of RNA polymerases in eukaryotic cells: RNA polymerase I, II, and III. Each type is responsible for transcribing a specific set of genes. RNA polymerase I transcribes ribosomal RNA genes, RNA polymerase II transcribes protein-coding genes, and RNA polymerase III transcribes small structural RNA genes. The promoters for each type of RNA polymerase are different and contain specific sequences that are recognized by the polymerase to initiate transcription.
What does bacterial rna polymerase bind to?
promoter
What is the region of DNA to which RNA polymerase bind?
promoter
Proteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter are called?
Transcription factors are proteins that bind to DNA and help regulate the initiation of transcription by RNA polymerase at promoter regions. They can enhance the binding of RNA polymerase to the promoter, thereby turning on the expression of specific operons.
Where does RNA polymerase bind to the DNA to initiate transcription?
RNA polymerase binds to the DNA at a specific region called the promoter to initiate transcription.
Where does RNA polymerase bind?
RNA polymerase bind specific regions of DNA called promoters. The RNA polymerase holoenzyme is guided to promoters by interactions between members of the holoenyzme and specific DNA sequences such as the TATA box.
What role does the sigma factor of RNA polymerase play in transcription?
The sigma factor of RNA polymerase helps to recognize and bind to specific DNA sequences, known as promoters, to initiate the process of transcription. It plays a crucial role in determining which genes are transcribed and when they are transcribed in a cell.
How does active CAP induce expression of the genes of the lactose operon?
Active CAP binds to the CAP site in the promoter region of the lactose operon. This binding helps RNA polymerase to efficiently initiate transcription of the genes in the operon, leading to their expression. The presence of cAMP is necessary for CAP to be active and bind to DNA.
Does RNA polymerase bind to the TATA box during transcription initiation?
Yes, RNA polymerase binds to the TATA box during transcription initiation in eukaryotic cells.
How does the presence of lactose enable RNA polymerase to transcribe the lac genes?
The presence of lactose enables RNA polymerase to transcribe the lac genes by inducing a conformational change in the lac repressor protein. This change prevents the lac repressor from binding to the lac operator, allowing RNA polymerase to access the promoter region and initiate transcription of the lac genes.
What is the function of sigma factor in transcription?
when RNA Polymerase meet the correct promoter(TATA box), it will bind at that region and then sigma factor will also bind to the RNA Polymerase.once ATP give energy, sigma factor will dissoiates from RNA Polymerase and the enzyme start to unwind the double helix
