HOME >> BIOLOGY >> NEWS
New Evidence On How Prions Turn Fatal

to the infectious form of the protein."

James adds that "the multiple structures evident are probably related to the different types of prion diseases which an individual can potentially get." Prion variants affect different parts of the human brain, causing either Creutzfeldt-Jakob disease (CJD), Fatal Familial Insomnia (FFI), Kuru, or Gerstmann-Straussler- Scheinker (GSS) disease.

To reduce risks to laboratory workers, the scientists studied a prion protein from Syrian hamsters. They describe the normal prion structure and show the region of structural instability. James says that area coincides with a sequence of genetic instructions in which different mutations can lead to various diseases. Further, he claims that their structure provides a chemical explanation for the variety of infectious prions.

Previous epidemiological studies, in both humans and sheep, showed that individuals with positively charged amino acid residues in certain regions of their normal prions do not get prion diseases. James says their 3-D structure shows those residues to be fairly close to one another. "This suggests," he asserts, "that breeding animals with mutations to positively charged residues in that region will produce a scrapie-resistant or BSE (mad cow)-resistant herd."


'"/>

Contact: Charmayne Marsh
y_marsh@acs.org
202-872-4445
American Chemical Society
9-Apr-1999


Page: 1 2

Related biology news :

1. Evidence builds for potential new cancer drug target
2. Evidence for sympatric speciation by host shift in the sea
3. Evidence for the impact of climate change on deep-sea biodiversity
4. Evidence for fat hormone target in brain
5. Evidence of nanobacterial-like structures found in human calcified arteries and cardiac valves
6. Evidence shows the heart has stem cells able to regenerate muscle tissue lost to disease, wear
7. Evidence for orangutan culture
8. Evidence suggests that standard smallpox vaccine offers long-term immunity
9. Evidence that adults stem cells differentiate like embryonic stem cells published in Nature
10. When Shewanella meets goethite: Evidence found of recognition between animate and inanimate objects
11. Evidence links protein damage to Parkinsons

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/26/2017)... , Feb. 25, 2017  Securus Technologies, ... technology solutions for public safety, investigation, corrections and ... Recidivism and Reentry. "Too often, too ... prisons and county jails are trying to tackle ... inmates and friends and family members. While significant steps ...
(Date:2/21/2017)... February 21, 2017 Der weltweite ... wachsen. Nach einem Gespräch mit mehr als 50 Vertretern aus ... zu überwinden gilt, um diese Prognose zu realisieren. ... ... Mobilisierung der finanziellen Mittel für die Biobank, die Implementierung ...
(Date:2/13/2017)... Feb. 13, 2017 Former 9/11 Commission border ... Committee, Janice Kephart of Identity Strategy Partners, ... Donald Trump,s "Executive Order: Protecting the Nation From ... 2017):  "As President Trump,s ,Travel Ban, Executive ... now essentially banned the travel ban, it is important ...
Breaking Biology News(10 mins):
(Date:3/22/2017)... ... , ... March 22, 2017...Council for Agricultural Science and Technology, Ames, Iowa. ... innovation in smart, sustainable ways. Humans depend on plants for food, feed, fiber, and ... This paper is the first in a series that connects science and technology to ...
(Date:3/22/2017)...  RXi Pharmaceuticals Corporation (NASDAQ: RXII), a clinical-stage ... unmet medical needs, today announced Alexey Eliseev ... at the 5th Annual Cancer BioPartnering & Investment ... present to and meet with thought leaders from ... as well as institutional investors. This event will ...
(Date:3/20/2017)... ... March 20, 2017 , ... ... the ability of endogenous hormones to regulate homeostasis via their cognate nuclear ... EDCs produce adverse reproductive, neurological, proliferative, and immunological disorders. EDC exposure can ...
(Date:3/20/2017)... ... March 20, 2017 , ... ... sample preparation methods in order to reduce the impact on instrumentation. ICP-MS is ... area of elemental analysis. , This presentation will discuss the pros and ...
Breaking Biology Technology:
Cached News: