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RNA editing is when an RNA molecule is changed (edited) through a chemical change in the base make up. There are various types of RNA editing - namely insertions/deletions and switching bases like Cytidine to Uridine or Adenosine to Inosine (properly known as deamination).
RNA editing has been observed in tRNA, rRNA and mRNA (interestingly enough all of them have to do with protein synthesis) of eukaryotes (in the cell nucleus, cytosol, mitochondrion, and chloroplast) but not in prokaryotes - which is interesting because both the mitochondrion and chloroplast are believed to be descended from prokaryotes.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoRNA editing take place in order to insure that only the codons that code for a particular gene will be translated into a protein.
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Is the following true or false rna editing occurs in the cytoplasm of the cell?
This is True! RNA editing is different than pre-mRNA processing, which takes place in the nucleus: Processing includes the removal of the introns (splicing), cleavage at the poly A site, and poly-adenylation. Then RNA translation is effected at the Cytoplasmic Ribosomes.RNA editing, which is different, has been shown to occur in the cytosol, the nucleus, and inside the mitochondria.
What happens to introns and exons during RNA editing?
No. The process which eliminatesintrons is called 'splicing'. This process is mediated by the protein complex called a spliceosome and probably occurs simultaneously with RNA editing. RNA editing is the addition, removal or substitution of bases in an RNA molecule after it has been synthesised, and critically can occur in organisms which lack introns. There are 3 main types of RNA editing: 1, Addition or removal of Uracil residues. Seen in the primary transcripts in trypanosome mitochondria (does not appear in multicellular organisms). 2, Cytosine -> Uracil Editing. Seen in mRNAs in some animals and plant mitochondria. 3, Adenosine -> Inosine. Seen in animal mRNAs. (Inosine is a very rare base which you get from the deamination of adenosine)
What are the three main ways through which an mRNA strand is modified between transcription and translation?
5' processing - capping 3' processing - cleavage and polyadenylation RNA splicing RNA editing
What is the purpose of nucleic acids?
To make RNA
What is the purpose of transcriptase?
Reverse transcriptase is the viral enzyme responsible for making a DNA copy of the RNA genome from a retrovirus. As such, it is technically known as an RNA-dependent DNA polymerase. This is opposite to the usual flow of genetic information from DNA to RNA to protein. This allows a virus with an RNA genome to make copies of itself that can be integrated into the DNA of its host.
Is the following true or false rna editing occurs in the cytoplasm of the cell?
This is True! RNA editing is different than pre-mRNA processing, which takes place in the nucleus: Processing includes the removal of the introns (splicing), cleavage at the poly A site, and poly-adenylation. Then RNA translation is effected at the Cytoplasmic Ribosomes.RNA editing, which is different, has been shown to occur in the cytosol, the nucleus, and inside the mitochondria.
What happens to introns and exons during RNA editing?
No. The process which eliminatesintrons is called 'splicing'. This process is mediated by the protein complex called a spliceosome and probably occurs simultaneously with RNA editing. RNA editing is the addition, removal or substitution of bases in an RNA molecule after it has been synthesised, and critically can occur in organisms which lack introns. There are 3 main types of RNA editing: 1, Addition or removal of Uracil residues. Seen in the primary transcripts in trypanosome mitochondria (does not appear in multicellular organisms). 2, Cytosine -> Uracil Editing. Seen in mRNAs in some animals and plant mitochondria. 3, Adenosine -> Inosine. Seen in animal mRNAs. (Inosine is a very rare base which you get from the deamination of adenosine)
What describes the main purpose of RNA polymerase during transcription.?
It synthesizes RNA.
What is the purpose of a nucleic acid?
To make RNA
What is the purpose of graphic editing programs?
to edit graphics
What are the three main ways through which an mRNA strand is modified between transcription and translation?
5' processing - capping 3' processing - cleavage and polyadenylation RNA splicing RNA editing
Which describes the main main purpose of RNA polymerase during transcription?
RNA polymerase produce mRNA from DNA
What is the purpose of nucleic acids?
To make RNA
What is the function of CL buffer in DNA extraction?
In a DNA extraction, the purpose of a buffer is to solubilize DNA as well as RNA. Because of this, it prevents the DNA for degrading.
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What is the purpose of transcriptase?
Reverse transcriptase is the viral enzyme responsible for making a DNA copy of the RNA genome from a retrovirus. As such, it is technically known as an RNA-dependent DNA polymerase. This is opposite to the usual flow of genetic information from DNA to RNA to protein. This allows a virus with an RNA genome to make copies of itself that can be integrated into the DNA of its host.
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