Oligomerization of amyloid Abeta16-22 peptides using hydrogen bonds and hydrophobicity forces

Biophysical Journal
Giorgio FavrinSandipan Mohanty

Abstract

The 16-22 amino-acid fragment of the beta-amyloid peptide associated with the Alzheimer's disease, Abeta, is capable of forming amyloid fibrils. Here we study the aggregation mechanism of Abeta16-22 peptides by unbiased thermodynamic simulations at the atomic level for systems of one, three, and six Abeta16-22 peptides. We find that the isolated Abeta16-22 peptide is mainly a random coil in the sense that both the alpha-helix and beta-strand contents are low, whereas the three- and six-chain systems form aggregated structures with a high beta-sheet content. Furthermore, in agreement with experiments on Abeta16-22 fibrils, we find that large parallel beta-sheets are unlikely to form. For the six-chain system, the aggregated structures can have many different shapes, but certain particularly stable shapes can be identified.

References

Sep 1, 1995·Trends in Biochemical Sciences·R A Sayle, E J Milner-White
Dec 5, 1988·Physical Review Letters·A M Ferrenberg, R H Swendsen
May 14, 1999·Current Opinion in Structural Biology·U H Hansmann, Y Okamoto
Sep 29, 1999·Proceedings of the National Academy of Sciences of the United States of America·M W WestM H Hecht
Feb 19, 2000·Current Opinion in Structural Biology·J C Rochet, P T Lansbury
Aug 16, 2000·Proceedings of the National Academy of Sciences of the United States of America·D E OtzenM Oliveberg
Oct 25, 2000·Protein Science : a Publication of the Protein Society·V VillegasL Serrano
Apr 23, 2002·Protein Science : a Publication of the Protein Society·R I Dima, D Thirumalai
Aug 15, 2002·Structure·Ronald Wetzel
Sep 28, 2002·Proceedings of the National Academy of Sciences of the United States of America·Per HammarströmJeffery W Kelly
Nov 29, 2002·Proceedings of the National Academy of Sciences of the United States of America·Manuela López De La PazLuis Serrano
Apr 18, 2003·Proceedings of the National Academy of Sciences of the United States of America·Jörg GsponerAmedeo Caflisch
Jul 16, 2003·Journal of Molecular Biology·Ruben Diaz-AvalosDonald L D Caspar
Aug 15, 2003·Nature·Fabrizio ChitiChristopher M Dobson
Aug 29, 2003·Biophysical Journal·Anders IrbäckStefan Wallin
Dec 20, 2003·Nature·Christopher M Dobson
May 5, 2004·Proceedings of the National Academy of Sciences of the United States of America·Salvador VenturaLuis Serrano
May 27, 2004·Proteins·Anders Irbäck, Fredrik Sjunnesson
Jul 23, 2004·The Journal of Chemical Physics·Miriam Friedel, Joan-Emma Shea

❮ Previous
Next ❯

Citations

Jun 1, 2012·The Protein Journal·Amir ArastehAli Akbar Moosavi-Movahedi
Jul 30, 2008·Journal of the American Chemical Society·Mary Griffin KroneJoan-Emma Shea
May 17, 2012·The Journal of Physical Chemistry. B·L CruzB Urbanc
Jan 10, 2009·The Journal of Physical Chemistry. B·Smita MukherjeeFeng Gai
Feb 10, 2009·Nano Letters·Idit BuchRuth Nussinov
Dec 6, 2008·PLoS Computational Biology·Da-Wei LiShuanghong Huo
Jul 10, 2008·PloS One·Amol Pawar, Giorgio Favrin
Feb 6, 2008·The Journal of Chemical Physics·Jean-Francois St-PierrePhilippe Derreumaux
Jan 11, 2007·The Journal of Chemical Physics·Jan H Meinke, Ulrich H E Hansmann
Apr 2, 2008·The Journal of Chemical Physics·Xiao DongPhilippe Derreumaux
May 2, 2008·The Journal of Chemical Physics·Priya AnandUlrich H E Hansmann
Jan 19, 2007·The Journal of Chemical Physics·Philippe Derreumaux, Normand Mousseau
Dec 3, 2008·The Journal of Chemical Physics·Mai Suan LiD Thirumalai
Feb 23, 2007·The Journal of Chemical Physics·Adrien MelquiondPhilippe Derreumaux
Sep 22, 2005·Proceedings of the National Academy of Sciences of the United States of America·Anders IrbäckSandipan Mohanty
Aug 9, 2006·Proteins·Adrien MelquiondPhilippe Derreumaux
Sep 7, 2006·Proteins·Anders Irbäck, Simon Mitternacht
Sep 5, 2015·The Journal of Physical Chemistry. B·Jurriaan A Luiken, Peter G Bolhuis
Dec 23, 2004·Biophysical Journal·Anders Irbäck, Sandipan Mohanty
Apr 17, 2015·The Journal of Chemical Physics·Maksim KouzaMai Suan Li
Jun 13, 2006·Biophysical Journal·Guanghong Wei, Joan-Emma Shea
Aug 4, 2016·The Journal of Physical Chemistry. B·Bhanita Sharma, Sandip Paul
Mar 26, 2015·Physical Chemistry Chemical Physics : PCCP·Jurriaan A Luiken, Peter G Bolhuis
Nov 3, 2016·Physical Chemistry Chemical Physics : PCCP·Prabir KhatuaSanjoy Bandyopadhyay
Apr 11, 2015·Faraday Discussions·Maria A VorontsovaPeter G Vekilov
Nov 5, 2011·Journal of Peptide Science : an Official Publication of the European Peptide Society·Chandrasekaran SivakamaSundariRamakrishnan Nagaraj
Jul 19, 2006·Journal of Computational Chemistry·Anders Irbäck, Sandipan Mohanty
Jun 30, 2007·Proteins·Julien MaupetitPhilippe Derreumaux
Aug 27, 2010·Proteins·Mookyung CheonCarol K Hall
Sep 20, 2005·Journal of Computational Chemistry·Mark T OakleyJonathan D Hirst
Dec 13, 2006·Physical Review Letters·Christoph JunghansWolfhard Janke
Nov 13, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Chiu Fan LeeDavid J Vaux
Sep 20, 2012·Chemical Society Reviews·Gloria A A SaracinoFabrizio Gelain

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cajal Bodies & Gems

Cajal bodies or coiled bodies are dense foci of coilin protein. Gemini of Cajal bodies, or gems, are microscopically similar to Cajal bodies. It is believed that Cajal bodies play important roles in RNA processing while gems assist the Cajal bodies. Find the latest research on Cajal bodies and gems here.

Alzheimer's Disease: APP

Amyloid precursor protein (APP) proteolysis is critical for the development of Alzheimer's disease, a neurodegenerative disease associated with accumulation of amyloid plaques in the brain. Here is the latest research on APP and Alzheimer's disease.

Alzheimer's Disease: Amyloid Beta

Alzheimer's disease is a neurodegenerative disease associated with the accumulation of amyloid plaques in the brain; these plaques are comprised of amyloid beta deposits. Here is the latest research in this field.