Manual Subviral Pathogens of Plants and Animals: Viroids and Prions

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It's smaller than a virus and has no capsid. A viroid is a coiled, "naked" RNA molecule that can affect a cell.

Viroids and Prions

Its claim to fame is its ability to infect plant life. Although it has no protein of its own, a viroid's RNA affects a plant's ability to produce essential proteins. Discovered by scientists in the s, viroids affect crops like tomatoes, potatoes and fruit trees. They don't cause human disease, but they can cause crop failure, which means a huge loss of revenue for the agriculture industry each year [source: Microbe World ].

Viroids typically spread via seeds or pollen. An infected plant might rub up against an uninfected neighbor, an insect could feed on different plants and spread the viroid around, or farm tools might distribute the infection throughout an entire field. Not much is known about them, but we do know that a prion is an abnormal or mutated form of a usually harmless protein. When this normal protein becomes a prion, it becomes dangerous and can cause several mostly fatal neurodegenerative brain diseases.

The most well-known disease caused by prions is mad cow disease the human form is Creutzfeldt-Jakob disease. Once prions enter the brain, they force the normal cellular proteins to begin folding into abnormal shapes. This destroys the neurons and eventually leads the brain to become riddled with holes. This spongelike brain consistency is where the medical name for mad cow disease comes from — bovine spongiform encephalopathy BSE. Prions also cause the condition "scrapie," a degenerative disease affecting the nervous system, in sheep and goats. Prions can cause a few human diseases, although they're extremely rare.

Seller Rating:. About this Item: Academic Pr, Condition: Good.

Subviral Pathogens of Plants and Animals: Viroids and Prions - Google книги

Ships from the UK. Former Library book. Shows some signs of wear, and may have some markings on the inside. Seller Inventory GRP More information about this seller Contact this seller 1. Published by Academic Press Inc From: Anybook Ltd.

Prions

Lincoln, United Kingdom. About this Item: Academic Press Inc, Condition: Fair. This book has hardback covers. In fair condition, suitable as a study copy. No dust jacket. Seller Inventory More information about this seller Contact this seller 2. Condition: Poor. Ex-library, With usual stamps and markings, In poor condition, suitable as a reading copy.

Dust Jacket in good condition.


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Please note the Image in this listing is a stock photo and may not match the covers of the actual item,grams, ISBN More information about this seller Contact this seller 3. In good all round condition. More information about this seller Contact this seller 4.

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Volume 2. Hardcover,ex-library, with usual stamps and markings, in good all round condition. More information about this seller Contact this seller 5. Published by Pergamon About this Item: Pergamon, Dust Jacket in fair condition. More information about this seller Contact this seller 6. More information about this seller Contact this seller 7. Condition: Very Good.


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No Jacket. Ex lib. Contents clean, tight and bright. More information about this seller Contact this seller 8. Condition: New. Language: English. Brand new Book. This reaction is part of the in vivo self-cleavage mechanism that is observed in the rolling cycle replication mechanism of viroids.

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The chemically synthesized hammerhead ribozyme that is used in this experiment forms of two RNA strands that harbor the catalytic activity and a substrate RNA strand as shown in figure 1. In the presence of MgCl2, the ribozyme adopts its active conformation and cleaves substrate strand. In order to demonstrate the cleavage, the substrate strand is radioactively labeled with 32P at the 5' end by T4 polynucleotide kinase. Seller Inventory APC More information about this seller Contact this seller 9. About this Item: Paperback.

The book has been read, but is in excellent condition.


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Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Seller Inventory GOR More information about this seller Contact this seller New Book. Delivered from our UK warehouse in 4 to 14 business days. Established seller since Seller Inventory IQ Seller Inventory LIE Published by Routledge About this Item: Routledge, Condition: Used; Good.

Viroids, infectious agents that encode no proteins

Simply Brit: We have dispatched from our UK warehouse books of good condition to over 1 million satisfied customers worldwide. We are committed to providing you with a reliable and efficient service at all times. Condition: Brand New. In Stock. Seller Inventory x