The chaperone Hsp104, a member of the Hsp100/Clp family of translocases, prevents fibril formation of a variety of amyloidogenic peptides in a paradoxically substoichiometric manner. To understand the mechanism whereby Hsp104 inhibits fibril formation, we probed the interaction of Hsp104 with the Alzheimer's amyloid-?42 (A?42) peptide using a variety of biophysical techniques. Hsp104 is highly effective at suppressing the formation of Thioflavin T (ThT) reactive mature fibrils that are readily...
[NMR paper] Quantitative NMR analysis of the kinetics of prenucleation oligomerization and aggregation of pathogenic huntingtin exon-1 protein
Quantitative NMR analysis of the kinetics of prenucleation oligomerization and aggregation of pathogenic huntingtin exon-1 protein
The N-terminal region of the huntingtin protein, encoded by exon-1 (htt^(ex1)) and containing an expanded polyglutamine tract, forms fibrils that accumulate in neuronal inclusion bodies, resulting in Huntington's disease. We previously showed that reversible formation of a sparsely populated tetramer of the N-terminal amphiphilic domain, comprising a dimer of dimers in a four-helix bundle configuration, occurs on the microsecond timescale and is an essential...
[ASAP] Quantitative NMR Study of Insulin-Degrading Enzyme Using Amyloid-? and HIV-1 p6 Elucidates Its Chaperone Activity
Quantitative NMR Study of Insulin-Degrading Enzyme Using Amyloid-? and HIV-1 p6 Elucidates Its Chaperone Activity
https://pubs.acs.org/na101/home/literatum/publisher/achs/journals/content/bichaw/0/bichaw.ahead-of-print/acs.biochem.1c00342/20210803/images/medium/bi1c00342_0005.gif
Biochemistry
DOI: 10.1021/acs.biochem.1c00342
http://feeds.feedburner.com/~r/acs/bichaw/~4/rYtDmRoWk6c
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[NMR paper] Understanding amyloid fibril formation using protein fragments: structural investigations via vibrational spectroscopy and solid-state NMR.
Understanding amyloid fibril formation using protein fragments: structural investigations via vibrational spectroscopy and solid-state NMR.
Related Articles Understanding amyloid fibril formation using protein fragments: structural investigations via vibrational spectroscopy and solid-state NMR.
Biophys Rev. 2018 May 31;:
Authors: Martial B, Lefèvre T, Auger M
Abstract
It is well established that amyloid proteins play a primary role in neurodegenerative diseases. Alzheimer's, Parkinson's, type II diabetes, and Creutzfeldt-Jakob's...
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[NMR paper] Distribution of amyloid-like and oligomeric species from protein aggregation kinetics
Distribution of amyloid-like and oligomeric species from protein aggregation kinetics
Amyloid fibrils and soluble oligomers are two types of protein aggregates associated with neurodegeneration. Classic therapeutic strategies try to prevent the nucleation and spread of amyloid fibrils, whilst diffusible oligomers have emerged as promising drug targets affecting downstream pathogenic processes. We developed a generic protein aggregation model and validate it against measured compositions of fibrillar and non-fibrillar assemblies of ataxin-3, a protein implicated in Machado-Joseph disease....
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Covalent structural changes in unfolded GroES that lead to amyloid fibril formation detected by NMR: Insight into intrinsically disordered proteins.
Covalent structural changes in unfolded GroES that lead to amyloid fibril formation detected by NMR: Insight into intrinsically disordered proteins.
Covalent structural changes in unfolded GroES that lead to amyloid fibril formation detected by NMR: Insight into intrinsically disordered proteins.
J Biol Chem. 2011 Apr 20;
Authors: Iwasa H, Meshitsuka S, Hongo K, Mizobata T, Kawata Y
Co-chaperonin GroES from E. coli works with chaperonin GroEL to mediate the folding reactions of various proteins. However, under specific conditions, i. e., the...
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04-22-2011 02:00 PM
[NMR paper] Amyloid fibril formation by A beta 16-22, a seven-residue fragment of the Alzheimer's
Amyloid fibril formation by A beta 16-22, a seven-residue fragment of the Alzheimer's beta-amyloid peptide, and structural characterization by solid state NMR.
Related Articles Amyloid fibril formation by A beta 16-22, a seven-residue fragment of the Alzheimer's beta-amyloid peptide, and structural characterization by solid state NMR.
Biochemistry. 2000 Nov 14;39(45):13748-59
Authors: Balbach JJ, Ishii Y, Antzutkin ON, Leapman RD, Rizzo NW, Dyda F, Reed J, Tycko R
The seven-residue peptide N-acetyl-Lys-Leu-Val-Phe-Phe-Ala-Glu-NH(2), called A...
Quantitative NMR analysis of the mechanism and kinetics of chaperone Hsp104 action on amyloid-?42 aggregation and fibril formation
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