Virusoid - Wikipedia
网页Virusoids are essentially viroids that have been encapsulated by a helper virus coat protein. They are thus similar to viroids in their means of replication (rolling circle replication) and in their lack of genes, but they differ in that viroids do not possess a protein coat.
6.4: Viroids, Virusoids, and Prions - Biology LibreTexts
网页2024年4月21日 · Virusoids are ssRNAs that require other helper viruses to establish an infection. Prions are proteinaceous infectious particles that cause transmissible spongiform encephalopathies. Prions are extremely resistant to chemicals, heat, and radiation. There are no treatments for prion infection.
6.4 Viroids, Virusoids, and Prions - Microbiology - OpenStax
网页Virusoids. A second type of pathogenic RNA that can infect commercially important agricultural crops are the virusoids, which are subviral particles best described as non–self-replicating ssRNAs.
拟病毒 - 百度百科
网页拟病毒（virusoids）又称类类病毒、壳内类病毒、卫星病毒或卫星RNA，是指一类包裹在真病毒粒子中的缺陷类病毒。 拟病毒极其微小，一般仅由裸露的RNA（300-400个核苷酸）或DNA所组成。 它是一种环状单链RNA。 它的寄生对象是病毒。 [3] 拟病毒极其微小，一般仅由裸露的RNA（300- 400个核苷酸）或-DNA所组成。 被拟病毒“寄生”的真病毒又称辅助病毒 ( Helper Virus)，拟病毒则成了它的“卫星” [4]。 类病毒RNA没有mRNA活性，不编码任何蛋 …
8.4 Viroids, Virusoids, and Prions – DeSales Microbiology
网页A second type of pathogenic RNA that can infect commercially important agricultural crops are the virusoids, which are subviral particles best described as non–self-replicating ssRNAs. RNA replication of virusoid s is similar to that of viroids but, unlike viroids, virusoids require that the cell also be infected with a specific “helper ...
Viroids, Virusoids, and Prions | Microbiology - Lumen Learning
网页The virusoid genomes are small, only 220 to 388 nucleotides long. A virusoid genome does not code for any proteins, but instead serves only to replicate virusoid RNA. Virusoids belong to a larger group of infectious agents called satellite RNAs, which are similar pathogenic RNAs found in animals.
Viruses: Definition, Structure, Classification - PMC
网页Viroids are plant pathogens and consist of a circular RNA (about 200–400 nucleotides) that does not code for proteins and exhibits a complex two-dimensional structure. A central sequence motif is highly conserved and essential for replication of …
Virion, Viroids, Virusoids, Prions
网页2024年2月14日 · Virusoids are sub-viral particles best described as non–self-replicating ssRNAs. The key difference between viroid and virusoid is that viroid is a small infectious agent composed only of a single-stranded RNA while virusoid is a type of infectious circular single-stranded RNA which requires a helper virus in order to infect the host cells. PRIONS.
6.4 Viroids, Virusoids, and Prions – Microbiology: Canadian Edition
网页A second type of pathogenic RNA that can infect commercially important agricultural crops are the virusoids, which are subviral particles best described as non–self-replicating ssRNAs. RNA replication of virusoid s is similar to that of viroids but, unlike viroids, virusoids require that the cell also be infected with a specific “helper ...
Virusoid - Oxford Reference
网页Overview. virusoid. Quick Reference. Molecules that, like viroids (q.v.), are single-stranded, circular RNAs. Unlike viroids, they are encapsulated within the virion of several plant viruses. The velvet tobacco mosaic virus is an example. From: virusoid in A Dictionary of Genetics » Subjects: Science and technology — Life Sciences.