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Transcription ends once the a termination sequence is reached. The sequence depends on which polymerase is being used and if the organism is a eukaryote or prokaryote.
In Eukaryotes when RNA polymerase 1 is used the termination sequence is an 18 nucleotide long sequence.
For RNA polymerase 3 the termination sequence is a short sequence of Uricils but the hairpin loop is not formed as it is in prokaryotes.
For RNA polymerase 2 transcription is terminated and cleavage takes place 10-35 nucleotides downstream of the AAUAA sequence.
For prokaryotes, termination can occur 2 ways. Termination can occur once the termination sequence is reached or using a protein called Rho factor.
For termination without Rho factor, the termination sequence is short and rich in Guanines and Cytosines followed by many Uricils in a row. A-U bonds are weaker than G-C bonds, the string of U-A bonds are easily broken and release the RNA strand
Using a Rho factor, once the Terminal sequence is reached, the Rho factor binds to a sequence 50-90 bases long and unwinds the DNA from the RNA , moving towards the 3' end, releasing the RNA
What else can I help you with?
Which direction does transcription take place?
Transcription takes place in the 5' to 3' direction. This means that RNA polymerase reads the DNA template strand in the 3' to 5' direction, synthesizing the complementary RNA strand in the 5' to 3' direction.
What is last steps during transcription?
RNA polymerase reaches the end of a gene.
What marks the end of the gene during transcription?
The end of a gene during transcription is marked by specific sequences known as terminators. These sequences signal RNA polymerase to stop synthesizing RNA and detach from the DNA template. In eukaryotes, additional processing, such as the addition of a poly-A tail, occurs after transcription termination to finalize the mRNA molecule.
What steps happen first during during transcription?
At first during transcription, RNA polymerase binds the promoter region of a gene to be transcribed. The end product would be the synthesized mRNA.
What is gene body?
The Gene body is defined as an entire gene from the transcription start site to the end of the transcript.
What is the end producof transcription?
The end product of transcription is messenger RNA (mRNA).
What are the end results in transcription and translation?
Transcription results in the synthesis of a complementary RNA molecule from a DNA template. Translation involves the conversion of this RNA molecule into a specific sequence of amino acids, forming a protein. The end result of translation is the production of a functional protein that can perform specific cellular functions.
What is the direction of transcription in the process of gene expression?
During gene expression, transcription occurs in the direction from the 5' to the 3' end of the DNA strand.
Which direction does transcription take place?
Transcription takes place in the 5' to 3' direction. This means that RNA polymerase reads the DNA template strand in the 3' to 5' direction, synthesizing the complementary RNA strand in the 5' to 3' direction.
What is last steps during transcription?
RNA polymerase reaches the end of a gene.
Reading of the bases along the length of a nucleic acid molecule for either transcription or translation is done from which end?
Nucleic acids are read from the 3' to the 5' end during transcription and translation. This means that the RNA or DNA polymerase reads the bases starting from the 3' end and moves towards the 5' end of the molecule.
What marks the end of the gene during transcription?
The end of a gene during transcription is marked by specific sequences known as terminators. These sequences signal RNA polymerase to stop synthesizing RNA and detach from the DNA template. In eukaryotes, additional processing, such as the addition of a poly-A tail, occurs after transcription termination to finalize the mRNA molecule.
What steps happen lasts during transcription?
RNA polymerase reaches the end of a gene.
What happens at end of transcription?
The transcription process stops.mRNA detaches and moves to the ribosomesTranscription is the first step of gene expression, in which a particular segment of DNA is copied into RNA by the enzyme RNA polymerase.
What steps happen first during during transcription?
At first during transcription, RNA polymerase binds the promoter region of a gene to be transcribed. The end product would be the synthesized mRNA.
Is Harvard good for medical transcription?
Many people take medical transcription classes online or at their local community college. It is not necessary to attend a high-end college such as Yale or Stanford.
What is the significance of the 5' end in DNA replication and transcription processes?
The 5' end of DNA is important in replication and transcription because it serves as the starting point for the synthesis of new DNA strands and RNA molecules. This end provides a directionality for the process and helps enzymes to correctly read and copy the genetic information.
