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Science 12 May 1995:
Vol. 268. no. 5212, pp. 880 - 884
DOI: 10.1126/science.7754373

Articles

Science, Vol 268, Issue 5212, 880-884
Copyright © 1995 by American Association for the Advancement of Science


articles

Role of the chaperone protein Hsp104 in propagation of the yeast prion-like factor [psi+]

YO Chernoff, SL Lindquist, B Ono, SG Inge-Vechtomov, and SW Liebman

Department of Biological Sciences, University of Illinois, Chicago 60607-7020, USA.

The yeast non-Mendelian factor [psi+] has been suggested to be a self-modified protein analogous to mammalian prions. Here it is reported that an intermediate amount of the chaperone protein Hsp104 was required for the propagation of the [psi+] factor. Over-production or inactivation of Hsp104 caused the loss of [psi+]. These results suggest that chaperone proteins play a role in prion-like phenomena, and that a certain level of chaperone expression can cure cells of prions without affecting viability. This may lead to antiprion treatments that involve the alteration of chaperone amounts or activity.


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Destabilizing Interactions Among [PSI+] and [PIN+] Yeast Prion Variants.
M. E. Bradley and S. W. Liebman (2003)
Genetics 165, 1675-1685
   Abstract »    Full Text »    PDF »
Importance of low-oligomeric-weight species for prion propagation in the yeast prion system Sup35/Hsp104.
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Specificity of Class II Hsp40 Sis1 in Maintenance of Yeast Prion [RNQ+].
N. Lopez, R. Aron, and E. A. Craig (2003)
Mol. Biol. Cell 14, 1172-1181
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Saccharomyces cerevisiae Hsp70 Mutations Affect [PSI+] Prion Propagation and Cell Growth Differently and Implicate Hsp40 and Tetratricopeptide Repeat Cochaperones in Impairment of [PSI+].
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Genetics 163, 495-506
   Abstract »    Full Text »    PDF »
Guanidine Hydrochloride Inhibits the Generation of Prion "Seeds" but Not Prion Protein Aggregation in Yeast.
F. Ness, P. Ferreira, B. S. Cox, and M. F. Tuite (2002)
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D. Lockshon (2002)
Genetics 161, 1425-1435
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Amino acid residue 184 of yeast Hsp104 chaperone is critical for prion-curing by guanidine, prion propagation, and thermotolerance.
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J. Biol. Chem. 277, 23702-23708
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Huntingtin toxicity in yeast model depends on polyglutamine aggregation mediated by a prion-like protein Rnq1.
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   Abstract »    Full Text »    PDF »
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Polyglutamine length-dependent interaction of Hsp40 and Hsp70 family chaperones with truncated N-terminal huntingtin: their role in suppression of aggregation and cellular toxicity.
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Evidence for the Prion Hypothesis: Induction of the Yeast [PSI+] Factor by in Vitro- Converted Sup35 Protein.
H. E. Sparrer, A. Santoso, F. C. Szoka Jr., and J. S. Weissman (2000)
Science 289, 595-599
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The [KIL-d] Element Specifically Regulates Viral Gene Expression in Yeast.
Z. Tallóczy, R. Mazar, D. E. Georgopoulos, F. Ramos, and M. J. Leibowitz (2000)
Genetics 155, 601-609
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Lysosomotropic Agents and Cysteine Protease Inhibitors Inhibit Scrapie-Associated Prion Protein Accumulation.
K. Doh-ura, T. Iwaki, and B. Caughey (2000)
J. Virol. 74, 4894-4897
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Creating a Protein-Based Element of Inheritance.
L. Li and S. Lindquist (2000)
Science 287, 661-664
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Guanidine hydrochloride blocks a critical step in the propagation of the prion-like determinant [PSI+] of Saccharomyces cerevisiae.
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Prions in Saccharomyces and Podospora spp.: Protein-Based Inheritance.
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V. Coustou, C. Deleu, S. J. Saupe, and J. Bégueret (1999)
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Recognition, Targeting, and Hydrolysis of the lambda  O Replication Protein by the ClpP/ClpX Protease.
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   Abstract »    Full Text »    PDF »
Prion Domain Initiation of Amyloid Formation in Vitro from Native Ure2p.
K. L. Taylor, N. Cheng, R. W. Williams, A. C. Steven, and R. B. Wickner (1999)
Science 283, 1339-1343
   Abstract »    Full Text »
The [URE3] prion is an aggregated form of Ure2p that can be cured by overexpression of Ure2p fragments.
H. K. Edskes, V. T. Gray, and R. B. Wickner (1999)
PNAS 96, 1498-1503
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The Yeast [PSI+] Prion: Making Sense of Nonsense.
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Propagation of a Novel Cytoplasmic, Infectious and Deleterious Determinant Is Controlled by Translational Accuracy in Podospora anserina.
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Posttranscriptional Control of Gene Expression in Yeast.
J. E. G. McCarthy (1998)
Microbiol. Mol. Biol. Rev. 62, 1492-1553
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Molecular Chaperones: Biology and Prospects for Pharmacological Intervention.
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