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A) The enzyme probably came from the host animal cell and is coded for by a gene in the host cellThe base composition of a virus was found to be 11% A, 32% G, 18% U and 39% C It this a DNA or RNA virus?DoubleStranded RNA Production of doublestranded RNA (dsRNA) is a part of the coxsackievirus replication cycle It has been shown that dsRNA is able to directly stimulate a dsRNctivated protein kinase (PKR) A major substrate of PKR is the α subunit of the eukaryotic translation initiation factor 2 (eIF2α)

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Double stranded rna is found in which virus

Double stranded rna is found in which virus-Doublestranded RNA synonyms, Doublestranded RNA pronunciation, Doublestranded RNA translation, English dictionary definition of Doublestranded RNA RNA A adenine U uracil C cytosine G guanine n Although HSV1 is an enveloped doublestranded DNA virus, HSV1 has been found to generate doublestranded RNA 30The presence of Uracil shows that it is RNA The base composition is unequal, so it must be single stranded 2 Which of these DNA fragments will have a higher melting temperature?

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An RNA virus is a virus which has (ribonucleic acid) RNA as its genetic material The nucleic acid is usually singlestranded RNA but it may be doublestranded RNA (dsRNA) Notable human diseases caused by RNA viruses include the common cold, influenza, SARS, MERS, COVID19, Dengue Virus, hepatitis C, hepatitis E, West Nile fever, Ebola virus disease, rabies, polio,We have found that both virus particles and double stranded RNA are active in inducing interferon production and protecting mice against encephalomyocarditis and Semliki Forest virusesDouble stranded RNA, also known as dsRNA, usually shows up in viruses and is somewhat unusual In viruses, it is a unique characteristic, and only a small number of viral families exhibit this trait RNA hybridization happens when one RNA strand combines, or hybridizes, with either another RNA strand or a deoxyribonucleic acid (DNA) strand

DNA and RNA are very similar After all, RNA is supposed to be a copy of DNA However, there are a few differences between the two molecules The biggest difference is in their shape DNA is a twostranded molecule in the form of a double helix RNA, on the other hand, is a singlestranded It turns out that ADARs specifically edit a molecule called doublestranded RNA (dsRNA) When viruses infect cells in animals, including humans, they make dsRNA, which the innate immune system detects as a sign that a cell has been invaded It also turns out that animal cells make their own dsRNA Over the years, Bass and her lab have Doublestranded RNA viruses The virion (genomic) RNA is double stranded and so cannot function as mRNA;

Is it singlestranded or doublestranded? "NMD also helps us combat viral infections, which is why many viruses either inhibit or evade NMD," she adds "The genome of the virus COVID19 is a positivesense, singlestranded RNA It is well known that other positivesense, singlestranded RNA viruses evade NMD by having RNA structures that prevent NMD from degrading viral RNAs" Group III includes doublestranded RNA viruses while group IV includes positivesense singlestranded RNA viruses Finally, group V includes negativesense ssRNA viruses In addition, retroviruses also have a singlestranded RNA genome, but they transcribe via an intermediate of DNA

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 I will keep it very very short and simple dsRNA is very critical in regulation of gene expression at translational level In our system we have specific miRNA (micro RNA) that are somewhat complementary to a specific mRNA and miRNAmRNA binding forms a double stranded molecule that is degraded by our system at a cellular levelFor instance, TLR7 recognize viral RNA in the endosomes Properties microbial nucleic acids have often specific structure, length or modification such as bacterial DNA which contains unmethylated repeats of dinucleotide CpG or viral doublestranded (ds) or singlestranded (ss) RNAIt is found in most of the RNA viruses eg tobacco mosaic virus, influenza virus, poliomyelitis, bacteriophage MS2, Avian leukemia virus

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Thus these viruses also need to package an RNA polymerase to make their mRNA after infection of the host cell Example rotaviruses (belong to reovirus family)DsRNA is a double stranded RNA, ie the RNA which is having two strands This phenomenon is seen in viruses only The doublestranded (ds)RNA viruses represent a diverse group of viruses that varySerotype 3 (T3) reoviruses induce substantially more type 1 interferon (IFNI) secretion than serotype 1 (T1) strains However, the mechanisms underlying differences in IFNI production it was found that long doublestranded RNA (dsRNA) is diced progressively from the termini into a pool of 21nucleotide siRNA duplexes by the dsRNAspecific endoribonuclease (RNase) Dicer6,7 These siRNAs then select and destroy their mRNA targets by basepairing with and guiding the endoribonucleic cleavage (or

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RNA interference (RNAi) is a genetic regulatory system that functions to silence the activity of specific genes RNAi occurs naturally, through the production of nuclearencoded premicroRNA (premiRNA), and can be induced experimentally, using short segments of synthetic doublestranded RNA (dsRNA)Credit CC0 public domain Challenged the doctrine that scientists believe they understand the DNA virus, a team of researchers led by the Philadelphia Children's Hospital (CHOP) found that adenovirus uses a unique and efficient RNA splicing mechanism It has been shown to prevent the formation of doublestranded RNA Induces the host's immune response Adenovirus evades Catalyzes the hydrolytic deamination of adenosine to inosine in doublestranded RNA (dsRNA) referred to as AtoI RNA editing (PubMed, PubMed, PubMed) This may affect gene expression and function in a number of ways that include mRNA translation by changing codons and hence the amino acid sequence of proteins;

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A newlydiscovered doublestranded RNA virus which infects animal cells is found to contain a unique enzyme which synthesizes doublestranded RNA using an RNA template Which of the following statements is likely to be true? If the genetic material is RNA, it will usually be single stranded Only viruses contain double stranded RNA The main genetic material in eukaryotic cells (eg animal cells) is DNAIn a double stranded RNA form, retroviruses infect a host cell with their genome, and then are reverse transcribed into double stranded DNA, with the DNA then integrated into the home cell genome When integrated into a host genome, a retrovirus is hard to detect and can lay dormant for prolonged periods, having no discernible effect on the host

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 During this process, the viruses create long strings of doublestranded RNA (dsRNA), which is not found in human or other animal cells As part of their natural defenses against viral infection, human cells have proteins that latch onto dsRNA, setting off a cascade of reactions that prevents the virus from replicating itselfA There is evidence for Bform RNA in viruses B There is no evidence that Aform RNA occurs in cells C The A form is the only form found for doublestranded RNA in cells and in viruses D There is evidence that Zform RNA occurs in cells under certain conditions ERotaviruses are double stranded RNA viruses comprising a genus within the family Reoviridae The mature virus particles are triple layered, approximately 70 nm in diameter, and possess icosahedral symmetry The rotavirus genome consists of 11 segments of doublestranded RNA that code for 6 structural viral proteins and 6 nonstructural proteins

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Icosahedral virus particles of approximately 40 nm in diameter were detected in the cytoplasm of infected cells The OMRV genome was observed to consist of a nonsegmented, 76kb doublestranded RNA (dsRNA) and contain two overlapping openHistorically, doublestranded RNA (dsRNA) has been considered as a byproduct of viral replication in mammalian cells for more than 30 years This property of replicating viruses is exploited at the cellular level to signal infection, restrict virus growth and limit viral spread In a subsequent study by the same group, Liu et al reported a significant drastic reduction in global host circRNA levels in cells upon poly(IC) (a synthetic doublestranded RNA that is used experimentally to model viral infections in vivo) transfection or encephalomyocarditis virus (EMCV) infection Intriguingly, they found that a

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Double Stranded Rna Is Found In

In recent years a great number of doublestranded RNAs have been detected in different viruses Viruses grown on fungi represent a special group, usually containing multiple doublestranded RNAs and in some cases both doublestranded RNA (dsRNA) and singlestranded RNA (ssRNA) in the same virion l51Replication occurs in host cytoplasm and converts ssmRNA to dsgenomic RNA But dsRNA is a kind of molecule that cells do not produce, and eukaryotic hosts have various antiviral systems that detect and inactivate dsRNA To circumvent this defenses, many dsRNA viruses are replicating their RNA inside icosahedral capsids This RNA moves to the cytoplasm where encapsidation by viral proteins occurs There is an encapsidation signal at the 5' end of the RNA and thus only one RNA molecule is found in each virion (compare the situation in retroviruses) Now, in the virus particle itself, the RNA is copied to DNA using reverse transcriptase

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DNA virus A virus in which the genetic material is DNA rather than RNA The DNA may be either double or singlestranded Major groups of doublestranded DNA viruses (class I viruses) include the adenoviruses, the herpes viruses, and the poxviruses They are the negative or minus (−)strand RNA viruses, the closely related ambisense RNA viruses, and doublestranded RNA viruses (Table 102 and Box 102) For each of these groups of viruses, the first synthetic event after genome penetration isNucleic acid isolated from a newly discovered virus is found to be 32 percent A, 18 percent C, 32 percent G, and 18 percent U Explore the features and viruses of RNA, such as doublestranded

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It has been found within viral capsid in the reoviruses of animals and in the wound tumour virus and rice dwarf viruses of plants Singlestranded RNA; Less common in nature is doublestranded RNA (dsRNA), which has two strands and resembles the wellknown DNA double helix It's found in some viruses, but for the past few decades, people haveDoublestranded RNA (dsRNA) is an important molecular pattern associated with viral infection and is detected by various extra and intracellular recognition molecules Poxviruses have evolved to avoid producing dsRNA early in infection but generate significant amounts of dsRNA late in infection due to convergent transcription of late genes

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 Study rewrites dogma of adenovirus infection and doublestranded RNA Challenging the dogma of what scientists thought they understood about DNA viruses, a team of researchers led by Children'sLinear single stranded RNA circular single stranded RNA double stranded RNA single stranded DNA all of the above are found in viruses How do viruses transport substances across their membrane active transport facillitated diffusion endocytosis pinnocytosis group translocation simple diffusion all of the above none of the above Viruses can beA 15% B 35% C 70% D 85% E

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Answer (1 of 2) here are many viruses with a doublestranded DNA genome that are known to infect mammals They are subdivided into seven virus families Hepadnaviridae, Polyomaviridae, Papillomaviridae, Adenoviridae, Herpesviridae, Poxviridae7 A doublestranded RNA genome isolated from a virus was found to contain 15% uracil What percentage of guanine should exist in this virus's genome?The occurrence of double stranded RNAs in biological systems was uncovered in a number of experiments in the early 1960s 7–9 Intriguingly all of the biological systems initially found to be sources for double stranded RNA involved virus infection

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A Rotavirus Is A Wheel Shaped Virus That Gets Its Name From Its Complex Shape Its Genome Consists Of 11 Double Stranded Rna Segments That Generate Six Structural Proteins Vp1 Vp2 Vp3 Vp4 Vp6

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