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- https://bio.libretexts.org/Courses/Manchester_Community_College_(MCC)/Remix_of_Openstax%3AMicrobiology_by_Parker_Schneegurt_et_al/09%3A_Acellular_Pathogens/9.04%3A_Viroids_Virusoids_and_PrionsOther acellular agents such as viroids, virusoids, and prions also cause diseases. Viroids consist of small, naked ssRNAs that cause diseases in plants. Virusoids are ssRNAs that require other helper ...Other acellular agents such as viroids, virusoids, and prions also cause diseases. Viroids consist of small, naked ssRNAs that cause diseases in plants. 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.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(OpenStax)/26%3A_Nervous_System_Infections/26.03%3A_Acellular_Pathogenic_Diseases_of_the_Nervous_SystemA number of different viruses and subviral particles can cause diseases that affect the nervous system. Viral diseases tend to be more common than bacterial infections of the nervous system today. For...A number of different viruses and subviral particles can cause diseases that affect the nervous system. Viral diseases tend to be more common than bacterial infections of the nervous system today. Fortunately, viral infections are generally milder than their bacterial counterparts and often spontaneously resolve. Some of the more important acellular pathogens of the nervous system are described in this section.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Microbiology_OER_-_Ying_Liu/08%3A_Acellular_Pathogens/8.02%3A_Viroids_Virusoids_and_PrionsOther acellular agents such as viroids, virusoids, and prions also cause diseases. Viroids consist of small, naked ssRNAs that cause diseases in plants. Virusoids are ssRNAs that require other helper ...Other acellular agents such as viroids, virusoids, and prions also cause diseases. Viroids consist of small, naked ssRNAs that cause diseases in plants. 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.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Microbiology_OER_-_Ying_Liu/07%3A_Viruses/7.03%3A_Viruses/7.3.05%3A_Other_Acellular_Infectious_Agents-_Viroids_and_PrionsViroids are small, circular, single-stranded molecules of infectious RNA that cause several plant diseases. Prions are infectious protein particles responsible for a group of transmissible and/or inhe...Viroids are small, circular, single-stranded molecules of infectious RNA that cause several plant diseases. Prions are infectious protein particles responsible for a group of transmissible and/or inherited neurodegenerative diseases as a result of prion protein misfolding. Diseases including Creutzfeldt-Jakob disease Gerstmann-Straussler-syndrome, and mad cow disease.
- https://bio.libretexts.org/Courses/New_England_College/Microbiology_with_NEC/06%3A_Acellular_Pathogens/6.10%3A_Acellular_Pathogenic_Diseases_of_the_Nervous_SystemA number of different viruses and subviral particles can cause diseases that affect the nervous system. Viral diseases tend to be more common than bacterial infections of the nervous system today. For...A number of different viruses and subviral particles can cause diseases that affect the nervous system. Viral diseases tend to be more common than bacterial infections of the nervous system today. Fortunately, viral infections are generally milder than their bacterial counterparts and often spontaneously resolve. Some of the more important acellular pathogens of the nervous system are described in this section.
- https://bio.libretexts.org/Workbench/Biochem_Remix_Acevedo/04%3A_The_Three-Dimensional_Structure_of_Proteins/4.06%3A_Protein_Aggregates_-_Amyloids_Prions_and_Intracellular_GranulesThe Figure \PageIndex8 shows a comparison of the secondary structures of the native conformation of the light chain and those found in the two different fibrillar forms (A and B) of the amyloid ...The Figure \PageIndex8 shows a comparison of the secondary structures of the native conformation of the light chain and those found in the two different fibrillar forms (A and B) of the amyloid fibrils (panel a). The protein found in the plaques, called the PrP sc (the scrapie form of the normal protein) is insoluble in aqueous solution, protease-resistant, and has a high beta sheet content (43%) and lower alpha helix content (30%) than the normal version of the protein PrPc.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Supplemental_Modules_(Molecular_Biology)/PrionsPrion diseases have long fascinated biologists, because of the unusual nature of the infectious agent. Recently, prion diseases have become a major news story because of the emergence of the bovine (c...Prion diseases have long fascinated biologists, because of the unusual nature of the infectious agent. Recently, prion diseases have become a major news story because of the emergence of the bovine (cow) prion disease BSE, which can be transmitted to humans as the disease vCJD.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(Kaiser)/Unit_4%3A_Eukaryotic_Microorganisms_and_Viruses/10%3A_Viruses/10.05%3A_Other_Acellular_Infectious_Agents%3A_Viroids_and_PrionsViroids are small, circular, single-stranded molecules of infectious RNA that cause several plant diseases. Prions are infectious protein particles responsible for a group of transmissible and/or inhe...Viroids are small, circular, single-stranded molecules of infectious RNA that cause several plant diseases. Prions are infectious protein particles responsible for a group of transmissible and/or inherited neurodegenerative diseases as a result of prion protein misfolding. Diseases including Creutzfeldt-Jakob disease Gerstmann-Straussler-syndrome, and mad cow disease.
- https://bio.libretexts.org/Bookshelves/Biochemistry/Fundamentals_of_Biochemistry_(Jakubowski_and_Flatt)/01%3A_Unit_I-_Structure_and_Catalysis/04%3A_The_Three-Dimensional_Structure_of_Proteins/4.10%3A_Protein_Aggregates_-_Amyloids_Prions_and_Intracellular_GranulesThis comprehensive biochemistry resource outlines the intricate processes leading to protein aggregation and their implications in diseases. It covers amyloid, prion, and protein aggregation types, th...This comprehensive biochemistry resource outlines the intricate processes leading to protein aggregation and their implications in diseases. It covers amyloid, prion, and protein aggregation types, the mechanisms of amyloid formation, and their connection to neurodegenerative illnesses like Alzheimer's and Parkinson's.
- https://bio.libretexts.org/Courses/North_Central_State_College/BIOL_1550%3A_Microbiology_(2025)/07%3A_Viruses/7.03%3A_Viruses/7.3.05%3A_Other_Acellular_Infectious_Agents-_Viroids_and_PrionsViroids are small, circular, single-stranded molecules of infectious RNA that cause several plant diseases. Prions are infectious protein particles responsible for a group of transmissible and/or inhe...Viroids are small, circular, single-stranded molecules of infectious RNA that cause several plant diseases. Prions are infectious protein particles responsible for a group of transmissible and/or inherited neurodegenerative diseases as a result of prion protein misfolding. Diseases including Creutzfeldt-Jakob disease Gerstmann-Straussler-syndrome, and mad cow disease.
- https://bio.libretexts.org/Courses/Wheaton_College_Massachusetts/Principles_of_Biochemistry/04%3A_Protein_structure_and_function/4.07%3A_Prions_and_DiseaseThe problem in the transmissible spongiform encephalopathies (TSE's) is that amyloid-like protein aggregates form which appear to be neurotoxic. The protein found in the plaques has the same primary s...The problem in the transmissible spongiform encephalopathies (TSE's) is that amyloid-like protein aggregates form which appear to be neurotoxic. The protein found in the plaques has the same primary sequence as the PrPc but a different secondary and presumably tertiary structure. The protein found in the plaques, called the PrPsc (the scrapie form of the the normal protein) is insoluble in aqueuous solution, protease resistant.
