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Protein Misfolding Cyclic Amplification of Prions
10:12

Protein Misfolding Cyclic Amplification of Prions

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The utility of prions

Lev Z Osherovich1, Jonathan S Weissman

  • 1Howard Hughes Medical Institute, Department of Cellular, University of California, San Francisco 94143, USA. lxoshe@itsa.ucsf.edu

Developmental Cell
|February 8, 2002
PubMed

Insights

Prions, infectious proteins, are not just linked to diseases but can be beneficial and widespread, even in fungi. Studying yeast prions reveals their propagation, cellular effects, and potential role in evolution.

Area of Science:

  • Molecular biology
  • Neurodegenerative disease research
  • Mycology

Background:

  • Prions and amyloid fibrils are traditionally linked to mammalian neurodegenerative diseases.
  • Recent fungal research reveals prions are conserved, widespread, and can be beneficial.
  • Yeast prion studies offer insights into protein folding and propagation.

Purpose of the Study:

  • To explore the non-pathological roles of prions.
  • To understand prion mechanisms (appearance, propagation, cellular effects) in yeast.
  • To investigate the evolutionary implications of prions.

Main Methods:

  • Analysis of prion behavior in Saccharomyces cerevisiae.
  • Comparative genomics of prion-forming proteins.
  • Investigating cellular physiology under prion influence.

Main Results:

  • Prions in fungi are not solely disease-related but can be beneficial and conserved.
  • Yeast prion analysis elucidated mechanisms of prion formation and propagation.
  • Prions impact cellular physiology and potentially evolution.

Conclusions:

  • Prions represent a conserved biological phenomenon with potential benefits.
  • The study of yeast prions provides a model for understanding prion-like behavior.
  • Gln/Asn-rich proteins in eukaryotes may exhibit programmed prion-like functions.

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