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Alves NA, Frigori RB. Structural Interconversion in Alzheimer’s Amyloid-β(16–35) Peptide in an Aqueous Solution. J Phys Chem B 2018; 122:1869-1875. [DOI: 10.1021/acs.jpcb.7b12528] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nelson A. Alves
- Departamento
de Fı́sica, FFCLRP, Universidade de São Paulo, Avenida Bandeirantes, 3900, Ribeirão
Preto 14040-901, SP, Brazil
| | - Rafael B. Frigori
- Universidade Tecnológica Federal do Paraná, Rua Cristo Rei 19, Toledo 85902-490, PR, Brazil
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2
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Narang SS, Shuaib S, Goyal D, Goyal B. Assessing the effect of D59P mutation in the DE loop region in amyloid aggregation propensity of β2‐microglobulin: A molecular dynamics simulation study. J Cell Biochem 2017; 119:782-792. [DOI: 10.1002/jcb.26241] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 06/27/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Simranjeet S. Narang
- Department of Chemistry School of Basic and Applied Sciences Sri Guru Granth Sahib World University Punjab India
| | - Suniba Shuaib
- Department of Chemistry School of Basic and Applied Sciences Sri Guru Granth Sahib World University Punjab India
| | - Deepti Goyal
- Department of Chemistry School of Basic and Applied Sciences Sri Guru Granth Sahib World University Punjab India
| | - Bhupesh Goyal
- Department of Chemistry School of Basic and Applied Sciences Sri Guru Granth Sahib World University Punjab India
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3
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Cumberworth A, Bui JM, Gsponer J. Free energies of solvation in the context of protein folding: Implications for implicit and explicit solvent models. J Comput Chem 2015; 37:629-40. [DOI: 10.1002/jcc.24235] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 09/25/2015] [Accepted: 10/06/2015] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - Jörg Gsponer
- Center for High-Throughput Biology, UBC; Vancouver Canada
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4
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Pouplana R, Campanera JM. Energetic contributions of residues to the formation of early amyloid-β oligomers. Phys Chem Chem Phys 2014; 17:2823-37. [PMID: 25503571 DOI: 10.1039/c4cp04544k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low-weight amyloid-β (Aβ) oligomers formed at early stages of oligomerization rather than fibril assemblies seem to be the toxic components that drive neurodegeneration in Alzheimer's disease. Unfortunately, detailed knowledge of the structure of these early oligomers at the residue level is not yet available. In this study, we performed all-atom explicit solvent molecular dynamics simulations to examine the oligomerization process of Aβ10-35 monomers when forming dimers, trimers, tetramers and octamers, with four independent simulations of a total simulated time of 3 μs for each oligomer system. The decomposition of the stability free energy by MM-GBSA methodology allowed us to unravel the network of energetic interactions that stabilize such oligomers. The contribution of the intermonomeric van der Waals term is the most significant energy feature of the oligomerization process, consistent with the so-called hydrophobic effect. Furthermore, the decomposition of the stability free energy into residues and residue-pairwise terms revealed that it is mainly apolar interactions between the three specific hydrophobic fragments 31-35 (C-terminal region), 17-20 (central hydrophobic core) and 12-14 (N-terminal region) that are responsible for such a favourable effect. The conformation in which the hydrophobic cthr-chc interaction is oriented perpendicularly is particularly important. We propose three other model substructures that favour the oligomerization process and can thus be considered as molecular targets for future inhibitors. Understanding Aβ oligomerization at the residue level could lead to more efficient design of inhibitors of this process.
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Affiliation(s)
- R Pouplana
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII, s/n, Diagonal Sud, 08028, Barcelona, Catalonia, Spain.
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5
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Interaction of amyloid inhibitor proteins with amyloid beta peptides: insight from molecular dynamics simulations. PLoS One 2014; 9:e113041. [PMID: 25422897 PMCID: PMC4244084 DOI: 10.1371/journal.pone.0113041] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 10/18/2014] [Indexed: 11/22/2022] Open
Abstract
Knowledge of the detailed mechanism by which proteins such as human αB- crystallin and human lysozyme inhibit amyloid beta (Aβ) peptide aggregation is crucial for designing treatment for Alzheimer's disease. Thus, unconstrained, atomistic molecular dynamics simulations in explicit solvent have been performed to characterize the Aβ17–42 assembly in presence of the αB-crystallin core domain and of lysozyme. Simulations reveal that both inhibitor proteins compete with inter-peptide interaction by binding to the peptides during the early stage of aggregation, which is consistent with their inhibitory action reported in experiments. However, the Aβ binding dynamics appear different for each inhibitor. The binding between crystallin and the peptide monomer, dominated by electrostatics, is relatively weak and transient due to the heterogeneous amino acid distribution of the inhibitor surface. The crystallin-bound Aβ oligomers are relatively long-lived, as they form more extensive contact surface with the inhibitor protein. In contrast, a high local density of arginines from lysozyme allows strong binding with Aβ peptide monomers, resulting in stable complexes. Our findings not only illustrate, in atomic detail, how the amyloid inhibitory mechanism of human αB-crystallin, a natural chaperone, is different from that of human lysozyme, but also may aid de novo design of amyloid inhibitors.
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6
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Moritsugu K, Kidera A, Smith JC. Solvent Friction Effects Propagate over the Entire Protein Molecule through Low-Frequency Collective Modes. J Phys Chem B 2014; 118:8559-65. [DOI: 10.1021/jp503956m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Kei Moritsugu
- Graduate
School of Medical Life Science, Yokohama City University, 1-7-29
Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Akinori Kidera
- Graduate
School of Medical Life Science, Yokohama City University, 1-7-29
Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Jeremy C. Smith
- Center
for Molecular Biophysics, University of Tennessee/Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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7
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Molecular Dynamics Studies on Amyloidogenic Proteins. COMPUTATIONAL METHODS TO STUDY THE STRUCTURE AND DYNAMICS OF BIOMOLECULES AND BIOMOLECULAR PROCESSES 2014. [DOI: 10.1007/978-3-642-28554-7_14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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8
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Goldtzvik Y, Goldstein M, Benny Gerber R. On the crystallographic accuracy of structure prediction by implicit water models: Tests for cyclic peptides. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.01.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Lam AR, Rodriguez JJ, Rojas A, Scheraga HA, Mukamel S. Tracking the mechanism of fibril assembly by simulated two-dimensional ultraviolet spectroscopy. J Phys Chem A 2013; 117:342-50. [PMID: 23214934 DOI: 10.1021/jp3101267] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by the accumulation of plaque deposits in the human brain. The main component of these plaques consists of highly ordered structures called amyloid fibrils, formed by the amyloid β-peptide (Aβ). The mechanism connecting Aβ and AD is yet undetermined. In a previous study, a coarse-grained united-residue model and molecular dynamics simulations were used to model the growth mechanism of Aβ amyloid fibrils. On the basis of these simulations, a dock/lock mechanism was proposed, in which Aβ fibrils grow by adding monomers at either end of an amyloid fibril template. To examine the structures in the early time-scale formation and growth of amyloid fibrils, simulated two-dimensional ultraviolet spectroscopy is used. These early structures are monitored in the far ultraviolet regime (λ = 190-250 nm) in which the computed signals originate from the backbone nπ* and ππ* transitions. These signals show distinct cross-peak patterns that can be used, in combination with molecular dynamics, to monitor local dynamics and conformational changes in the secondary structure of Aβ-peptides. The protein geometry-correlated chiral xxxy signal and the non-chiral combined signal xyxy-xyyx were found to be sensitive to, and in agreement with, a dock/lock pathway.
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Affiliation(s)
- A R Lam
- Department of Chemistry, University of California-Irvine, Irvine, CA 92697-2025, USA.
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10
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Kucukkal TG, Stuart SJ. Polarizable Molecular Dynamics Simulations of Aqueous Dipeptides. J Phys Chem B 2012; 116:8733-40. [DOI: 10.1021/jp300528m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tugba G. Kucukkal
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634,
United States
| | - Steven J. Stuart
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634,
United States
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11
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Ye W, Chen Y, Wang W, Yu Q, Li Y, Zhang J, Chen HF. Insight into the stability of cross-β amyloid fibril from VEALYL short peptide with molecular dynamics simulation. PLoS One 2012; 7:e36382. [PMID: 22590535 PMCID: PMC3349666 DOI: 10.1371/journal.pone.0036382] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 03/30/2012] [Indexed: 12/13/2022] Open
Abstract
Amyloid fibrils are found in many fatal neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, type II diabetes, and prion disease. The VEALYL short peptide from insulin has been confirmed to aggregate amyloid-like fibrils. However, the aggregation mechanism of amyloid fibril is poorly understood. Here, we utilized molecular dynamics simulation to analyse the stability of VEALYL hexamer. The statistical results indicate that hydrophobic residues play key roles in stabilizing VEALYL hexamer. Single point and two linkage mutants confirmed that Val1, Leu4, and Tyr5 of VEALYL are key residues. The consistency of the results for the VEALYL oligomer suggests that the intermediate states might be trimer (3-0) and pentamer(3-2). These results can help us to obtain an insight into the aggregation mechanism of amyloid fibril. These methods can be used to study the stability of amyloid fibril from other short peptides.
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Affiliation(s)
- Wei Ye
- State Key Laboratory of Microbial Metabolism, Department of Bioinformatics and Biostatistics, College of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, China
| | - Yue Chen
- State Key Laboratory of Microbial Metabolism, Department of Bioinformatics and Biostatistics, College of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, China
| | - Wei Wang
- State Key Laboratory of Microbial Metabolism, Department of Bioinformatics and Biostatistics, College of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, China
| | - Qingfen Yu
- State Key Laboratory of Microbial Metabolism, Department of Bioinformatics and Biostatistics, College of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, China
| | - Yixue Li
- Shanghai Center for Bioinformation Technology, Shanghai, China
- * E-mail: (HC); (YL); (JZ)
| | - Jian Zhang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- * E-mail: (HC); (YL); (JZ)
| | - Hai-Feng Chen
- State Key Laboratory of Microbial Metabolism, Department of Bioinformatics and Biostatistics, College of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, China
- Shanghai Center for Bioinformation Technology, Shanghai, China
- * E-mail: (HC); (YL); (JZ)
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12
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Esteban‐Martín S, Bryn Fenwick R, Salvatella X. Synergistic use of NMR and MD simulations to study the structural heterogeneity of proteins. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2012. [DOI: 10.1002/wcms.1093] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Santiago Esteban‐Martín
- Joint BSC–IRB research program in Computational Biology, Institute for Research in Biomedicine (IRB Barcelona), Barcelona, Spain
| | - Robert Bryn Fenwick
- Joint BSC–IRB research program in Computational Biology, Institute for Research in Biomedicine (IRB Barcelona), Barcelona, Spain
| | - Xavier Salvatella
- Joint BSC–IRB research program in Computational Biology, Institute for Research in Biomedicine (IRB Barcelona), Barcelona, Spain
- ICREA, Barcelona, Spain
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13
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Synergistic applications of MD and NMR for the study of biological systems. J Biomed Biotechnol 2012; 2012:254208. [PMID: 22319241 PMCID: PMC3272818 DOI: 10.1155/2012/254208] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2011] [Accepted: 10/19/2011] [Indexed: 12/22/2022] Open
Abstract
Modern biological sciences are becoming more and more multidisciplinary. At the same time, theoretical and computational approaches gain in reliability and their field of application widens. In this short paper, we discuss recent advances in the areas of solution nuclear magnetic resonance (NMR) spectroscopy and molecular dynamics (MD) simulations that were made possible by the combination of both methods, that is, through their synergistic use. We present the main NMR observables and parameters that can be computed from simulations, and how they are used in a variety of complementary applications, including dynamics studies, model-free analysis, force field validation, and structural studies.
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14
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Powell LR, Dukes KD, Lammi RK. Probing the efficacy of peptide-based inhibitors against acid- and zinc-promoted oligomerization of amyloid-β peptide via single-oligomer spectroscopy. Biophys Chem 2012; 160:12-9. [PMID: 21945664 PMCID: PMC3210411 DOI: 10.1016/j.bpc.2011.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 08/26/2011] [Accepted: 08/29/2011] [Indexed: 01/18/2023]
Abstract
One avenue for prevention and treatment of Alzheimer's disease involves inhibiting the aggregation of amyloid-β peptide (Aβ). Given the deleterious effects reported for Aβ dimers and trimers, it is important to investigate inhibition of the earliest association steps. We have employed quantized photobleaching of dye-labeled Aβ peptides to characterize four peptide-based inhibitors of fibrillogenesis and/or cytotoxicity, assessing their ability to inhibit association in the smallest oligomers (n=2-5). Inhibitors were tested at acidic pH and in the presence of zinc, conditions that may promote oligomerization in vivo. Distributions of peptide species were constructed by examining dozens of surface-tethered monomers and oligomers, one at a time. Results show that all four inhibitors shift the distribution of Aβ species toward monomers; however, efficacies vary for each compound and sample environment. Collectively, these studies highlight promising design strategies for future oligomerization inhibitors, affording insight into oligomer structures and inhibition mechanisms in two physiologically significant environments.
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Affiliation(s)
- Lyndsey R Powell
- Department of Chemistry, Physics and Geology, Winthrop University, Rock Hill, SC 29733, USA
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15
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Comparison of molecular dynamics simulation methods for amyloid β(1-42) monomers containing D-aspartic acid residues for predicting retention times in chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:3337-43. [PMID: 21871847 DOI: 10.1016/j.jchromb.2011.08.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 08/01/2011] [Accepted: 08/09/2011] [Indexed: 11/21/2022]
Abstract
Molecular dynamics simulations of amyloid β(1-42) containing D-aspartic acid residues were performed using several continuous solvent models to investigate the usefulness of simulation methods for D-amino acid-containing proteins and peptides. Normal molecular dynamics simulations and replica exchange molecular dynamics simulations, which are one of the generalized-ensemble algorithms, were performed. Because the β-structure contents of amyloid β(1-42) peptides obtained by replica exchange molecular dynamics simulations with Onufriev-Bashford-Case generalized Born implicit solvent were qualitatively consistent with experimental data, replica exchange molecular dynamics rather than other methods appeared to be more reasonable for calculations of amyloid β(1-42) containing D-aspartic acid residues. Computational results revealed that peptides with stereoinversion of Asp23 tend to form β-sheet structures by themselves, in contrast to the wild-type peptides that form β-sheet structures only after aggregation. These results are expected to be useful for computational investigations of proteins and peptides such as prediction of retention time of peptides and proteins containing D-aspartic acid residues.
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16
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Grasso G. The use of mass spectrometry to study amyloid-β peptides. MASS SPECTROMETRY REVIEWS 2011; 30:347-365. [PMID: 21500241 DOI: 10.1002/mas.20281] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 11/06/2009] [Accepted: 11/06/2009] [Indexed: 05/30/2023]
Abstract
Amyloid-β peptide (Aβ) varies in size from 39 to 43 amino acids and arises from sequential β- and γ-secretase processing of the amyloid precursor protein. Whereas the non-pathological role for Aβ is yet to be established, there is no disputing that Aβ is now widely regarded as central to the development of Alzheimer's disease (AD). The so named "amyloid cascade hypothesis" states that disease progression is the result of an increased Aβ burden in affected areas of the brain. To elucidate the Aβ role in AD, many analytical approaches have been proposed as suitable tools to investigate not only the total Aβ load but also many other issues that are considered crucial for AD, such as: (i) the aggregation state in which Aβ is present; (ii) its interaction with other species or metals; (iii) its ability to induce oxidative stress; and (iv) its degradative pathways. This review provides an insight into the use of mass spectrometry (MS) in the field of Aβ investigation aimed to assess its role in AD. In particular, the different MS-based approaches applied in vitro and in vivo that can provide detailed information on the above-mentioned issues are reviewed. Moreover, the advantages offered by the MS methods over all the other techniques are highlighted, together with the recent developments and uses of combined analytical approaches to detect and characterize Aβ.
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Affiliation(s)
- Giuseppe Grasso
- Chemistry Department, Università di Catania, Viale Andrea Doria 6, Catania 95125, Italy.
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17
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Su Z, Lu D, Liu Z. Refolding of inclusion body proteins from E. coli. METHODS OF BIOCHEMICAL ANALYSIS 2011; 54:319-38. [PMID: 21954784 DOI: 10.1002/9780470939932.ch13] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhiguo Su
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
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18
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Berhanu WM, Masunov AE. Molecular dynamic simulation of wild type and mutants of the polymorphic amyloid NNQNTF segments of elk prion: structural stability and thermodynamic of association. Biopolymers 2011; 95:573-90. [PMID: 21384336 DOI: 10.1002/bip.21611] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 02/02/2011] [Accepted: 02/05/2011] [Indexed: 02/04/2023]
Abstract
A hexapeptide with amino acid sequence NNQNTF from the elk prion protein forms amyloid fibrils. Here we use molecular dynamic simulations of the oligomers and their single point glycine mutants to study their stability. In an effort to probe the structural stability and association thermodynamic in a realistic environment, all wildtype of NNQNTF polymorphic forms with different size and their corresponding double layer 5 strands single point glycine mutants were subjected to a total of 500 ns of explicit-solvent molecular dynamics (MD) simulation. Our results show that the structural stability of the NNQNTF oligomers increases with increasing the number of β-strands for double layers. Our results also demonstrated that hydrophobic interaction is the principle driving force to stabilize the adjacent β-strands while the steric zipper is responsible for holding the neighboring β-sheet layers together. We used MM-PBSA approach free energy calculations to determine the role of nonpolar effects, electrostatics and entropy in binding. Nonpolar effects remained consistently more favorable in wild type and mutants reinforcing the importance of hydrophobic effects in protein-protein binding. While entropy systematically opposed binding in all cases, there was no observed trend in the entropy difference between wildtype and glycine mutant. Free energy decomposition shows residues situated at the interface were found to make favorable contributions to the peptide-peptide association. The study of the wild type and mutants in an explicit solvent may provide valuable insight for amyloid aggregation inhibitor design efforts.
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Affiliation(s)
- Workalemahu M Berhanu
- NanoScience Technology Center, Department of Chemistry, University of Central Florida, Orlando, FL 32826, USA
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19
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Nguyen PH, Li MS, Derreumaux P. Effects of all-atom force fields on amyloid oligomerization: replica exchange molecular dynamics simulations of the Aβ16–22 dimer and trimer. Phys Chem Chem Phys 2011; 13:9778-88. [DOI: 10.1039/c1cp20323a] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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20
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Oda A, Kobayashi K, Takahashi O. Molecular-Dynamics Simulations for Amyloid β1-42 Monomer with D-Aspartic Acid Residues Using Continuous Solvent. Chem Biodivers 2010; 7:1357-63. [DOI: 10.1002/cbdv.200900299] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Tsai HHG, Lee JB, Tseng SS, Pan XA, Shih YC. Folding and membrane insertion of amyloid-beta (25-35) peptide and its mutants: Implications for aggregation and neurotoxicity. Proteins 2010; 78:1909-25. [DOI: 10.1002/prot.22705] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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22
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Price KA, Crouch PJ, Donnelly PS, Masters CL, White AR, Curtain CC. Membrane-targeted strategies for modulating APP and Abeta-mediated toxicity. J Cell Mol Med 2009; 13:249-61. [PMID: 19278455 PMCID: PMC3823352 DOI: 10.1111/j.1582-4934.2008.00642.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease characterized by numerous pathological features including the accumulation of neurotoxic amyloid-β (Aβ) peptide. There is currently no effective therapy for AD, but the development of therapeutic strategies that target the cell membrane is gaining increased interest. The amyloid precursor protein (APP) from which Aβ is formed is a membrane-bound protein, and Aβ production and toxicity are both membrane mediated events. This review describes the critical role of cell membranes in AD with particular emphasis on how the composition and structure of the membrane and its specialized regions may influence toxic or benign Aβ/APP pathways in AD. The putative role of copper (Cu) in AD is also discussed, and we highlight how targeting the cell membrane with Cu complexes has therapeutic potential in AD.
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Affiliation(s)
- Katherine A Price
- Department of Pathology, The University of Melbourne, Victoria, Australia.
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23
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Chen HF. Aggregation mechanism investigation of the GIFQINS cross-β amyloid fibril. Comput Biol Chem 2009; 33:41-5. [DOI: 10.1016/j.compbiolchem.2008.07.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2008] [Revised: 07/16/2008] [Accepted: 07/16/2008] [Indexed: 11/26/2022]
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