transcription factor
Transcription factors.
the RNA polymerase attaches to the promoter and transcribes the gene in messenger RNA, or mRNA
The promoter region has no role in translation. It is the site where RNA Polymerase binds to initiate transcription. Basically, talking about bacteria, a protein called sigma70 binds to the promoter and recruits the RNA Polymerase enzyme. After the RNA Pol is recruited, the sigma70 factor is released and RNA Polymerase synthesizes the complementary mRNA from the DNA that is being transcribed.
The region of DNA that indicates where an enzyme should bind to initiate RNA synthesis is called the promoter sequence. The promoter sequence is typically located upstream of the gene that will be transcribed into RNA and is recognized by the enzyme RNA polymerase. Once bound to the promoter, RNA polymerase can begin the process of transcribing the gene into RNA.
The region of DNA where RNA synthesis begins is the promoter. DNA contains a number of upstream regulatory and promoter sequences but the region of DNA where RNA synthesis begins is the start codon. This is the first codon that translates into an RNA nucleotide.
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.
Transcription factors.
RNA polymerase determines its binding location on the DNA strand by recognizing specific sequences of nucleotides called promoter regions. These promoter regions contain signals that indicate where the RNA polymerase should start transcribing the DNA into RNA. The RNA polymerase binds to these promoter regions with the help of other proteins, allowing it to initiate the transcription process at the correct location on the DNA strand.
the RNA polymerase attaches to the promoter and transcribes the gene in messenger RNA, or mRNA
The nontranscribed region of DNA to which RNA polymerase binds to initiate transcription is called the promoter region. It contains specific sequences that signal to RNA polymerase where to begin transcribing the gene.
RNA polymerase binds to the DNA at a specific region called the promoter to initiate transcription.
RNA polymerase starts the transcription process at a specific DNA sequence called the promoter region.
according to information from http://www.rothamsted.ac.uk/notebook/courses/guide/trans.htm " if the RNA polymerase attaches to a special sequence called a promoter, an additional small protein, the factor sigma, will also attach to the polymerase and lock it on the DNA. The factor 'sigma' will only attach itself to the complex DNA / RNA polymerase when the RNA polymerase is attached to a promoter. Another hypothesis is that the factor sigma attaches to RNApol anyway and the enzyme is then able to slide along the DNA until it finds a promoter. It prevents detaching and speeds up promoter location, and decreases the affinity of RNApol for general regions of DNA. " Therefore, the answer seems to be, RNA attaches to DNA through a small protein called the factor sigma once the RNA polymerase attaches itself to a chain sequence called a "promoter". according to information from http://www.rothamsted.ac.uk/notebook/courses/guide/trans.htm " if the RNA polymerase attaches to a special sequence called a promoter, an additional small protein, the factor sigma, will also attach to the polymerase and lock it on the DNA. The factor 'sigma' will only attach itself to the complex DNA / RNA polymerase when the RNA polymerase is attached to a promoter. Another hypothesis is that the factor sigma attaches to RNApol anyway and the enzyme is then able to slide along the DNA until it finds a promoter. It prevents detaching and speeds up promoter location, and decreases the affinity of RNApol for general regions of DNA. " Therefore, the answer seems to be, RNA attaches to DNA through a small protein called the factor sigma once the RNA polymerase attaches itself to a chain sequence called a "promoter". role of sigmaActually RNA Polymerase can bind to DNA anywhere in the entire genome but sigma factor attaches to polymerase only when it is at promotor. sigma factor dissociates when polymerase crosses promotor. sigma factor stablises the pre initiatiation complex. Actually there are many promoter and many genes but which gene to be transcribed is decided by sigma factor.
The promoter region has no role in translation. It is the site where RNA Polymerase binds to initiate transcription. Basically, talking about bacteria, a protein called sigma70 binds to the promoter and recruits the RNA Polymerase enzyme. After the RNA Pol is recruited, the sigma70 factor is released and RNA Polymerase synthesizes the complementary mRNA from the DNA that is being transcribed.
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.
The site where RNA polymerase attaches to the DNA molecule to start the formation of mRNA is called a promoter region. This region contains specific nucleotide sequences that signal the start of transcription.
The region of DNA that indicates where an enzyme should bind to initiate RNA synthesis is called the promoter sequence. The promoter sequence is typically located upstream of the gene that will be transcribed into RNA and is recognized by the enzyme RNA polymerase. Once bound to the promoter, RNA polymerase can begin the process of transcribing the gene into RNA.