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Stages of transcription - Khan Academy
https://www.khanacademy.org/science/biology/gene-expression-central-dogma/transcription-of-dna-into-rna/a/stages-of-transcription
RNA polymerases transcribe DNA into RNA using a DNA template. RNA polymerase builds a new RNA molecule through base pairing. RNA polymerase always builds a new RNA strand in the 5’ to 3’ direction. Newly made mRNA is spliced by a molecular machine called the spliceosome that is like the scissors and glue of the cell. The spliceosome chops out unwanted sections of mRNA code and sticks the remaining mRNA back together again, to create mature mRNA that can be translated to make a protein. If RNA viruses enter the host cells, they undergo multiplication by replicating their RNA. The mechanism has been found to be similar to the replication of single stranded DNA.
RNA polymerases transcribe DNA into RNA using a DNA template.
RNA polymerase builds a new RNA molecule through base pairing. RNA polymerase always builds a new RNA strand in the 5’ to 3’ direction.
Newly made mRNA is spliced by a molecular machine called the spliceosome that is like the scissors and glue of the cell.
The spliceosome chops out unwanted sections of mRNA code and sticks the remaining mRNA back together again, to create mature mRNA that can be translated to make a protein.
If RNA viruses enter the host cells, they undergo multiplication by replicating their RNA. The mechanism has been found to be similar to the replication of single stranded DNA.
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https://pubmed.ncbi.nlm.nih.gov/16719717/
WebViral (+)RNA replication takes place on the cytosolic surfaces of intracellular membranes, where the viral RNA and replication proteins, together with co-opted host factors, are sequestered and reach high local concentrations that facilitate robust replication.
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DNA replication and RNA transcription and translation
https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/translation/v/rna-transcription-and-translation
WebDec 10, 2014 · 1) Initiation. After RNA polymerase binds to the promoter, the DNA strands unwind, and the polymerase initiates RNA synthesis at the start point on the template strand. 2) Elongation. … Author: Sal Khan
Author: Sal Khan
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7.11: Virus Replication - Biology LibreTexts
https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book%3A_Introductory_Biology_(CK-12)/07%3A_Prokaryotes_and_Viruses/7.11%3A_Virus_Replication
WebA reverse-transcribing virus is any virus which replicates using reverse transcription, the formation of DNA from an RNA template. Some reverse-transcribing viruses have genomes made of single-stranded RNA and …
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DNA and RNA Basics: Replication, Transcription, and …
https://www.visiblebody.com/blog/dna-and-rna-basics-replication-transcription-and-translation
WebJun 22, 2021 · Learn how DNA replicates, transcribes, and translates to produce proteins in your body. Find out the structure, function, and differences of DNA and RNA molecules.
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Stages of transcription - Khan Academy
https://www.khanacademy.org/science/biology/gene-expression-central-dogma/transcription-of-dna-into-rna/a/stages-of-transcription
OverviewKey points:IntroductionTranscription overviewRNA polymeraseTranscription initiationPromoters in bacteriaPromoters in humansElongationTranscription termination •Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make a…•RNA polymerase is the main transcription enzyme. •Transcription begins when RNA polymerase binds to a promoter sequence near the beginning …•RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule.
•Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make a…•RNA polymerase is the main transcription enzyme.
•Transcription begins when RNA polymerase binds to a promoter sequence near the beginning …•RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule.
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Replication and Expression Strategies of Viruses - PMC
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7158166/
WebMar 30, 2018 · RNA viruses replicate their genomes via one of two unique pathways—either by RNA-dependent RNA synthesis, or among the retroviruses, by …
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Structures and functions of coronavirus …
https://www.nature.com/articles/s41580-021-00432-z
WebNov 25, 2021 · They constitute a monophyletic virus cluster that is characterized by the universal conservation of seven domains in their large replicase gene, which encodes …
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Molecular mechanism of DNA replication - Khan Academy
https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/replication/a/molecular-mechanism-of-dna-replication
WebKey points: DNA replication is semiconservative. Each strand in the double helix acts as a template for synthesis of a new, complementary strand. New DNA is made by enzymes …
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RNA virus replication, transcription and recombination
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3127097/
WebMar 1, 2011 · Virus RNA genome replication. The replication of a viral genome is a fundamental step in the virus life cycle. For both plus- and minus-strand RNA viruses, …
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replication | Learn Science at Scitable - Nature
https://www.nature.com/scitable/definition/replication-33/
WebA short segment of RNA, called a primer, is then synthesized and acts as a starting point for new DNA synthesis. An enzyme called DNA polymerase next begins replicating the DNA …
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