@article {2019|2127, title = {C-Terminal Plays as the Possible Nucleation of the Self-Aggregation of the S-Shape Aβ Tetramer in Solution: Intensive MD Study.}, journal = {ACS Omega}, volume = {4}, year = {2019}, month = {2019 Jun 30}, pages = {11066-11073}, abstract = {

Amyloid beta (Aβ) peptides are characterized as the major factors associated with neuron death in Alzheimer\&$\#$39;s disease, which is listed as the most common form of neurodegeneration. Disordered Aβ peptides are released from proteolysis of the amyloid precursor protein. The Aβ self-assembly process roughly takes place via five steps: disordered forms \→ oligomers \→ photofibrils \→ mature fibrils \→ plaques. Although Aβ fibrils are often observed in patient brains, oligomers were recently indicated to be major neurotoxic elements. In this work, the neurotoxic compound S-shape Aβ tetramer (S4Aβ) was investigated over 10 μs of unbiased MD simulations. In particular, the S4Aβ oligomer adopted a high dynamics structure, resulting in unsuccessful determination of their structures in experiments. The C-terminal was suggested as the possible nucleation of the Aβ aggregation. The sequences 27-35 and 39-40 formed rich β-content, whereas other residues mostly adopted coil structures. The mean value of the β-content over the equilibrium interval is \∼42 \± 3\%. Furthermore, the dissociation free energy of the S4Aβ peptide was predicted using a biased sampling method. The obtained free energy is Δ = -58.44 kcal/mol which is roughly the same level as the corresponding value of the U-shape Aβ peptide. We anticipate that the obtained S4Aβ structures could be used as targets for AD inhibitor screening over the in silico study.

}, issn = {2470-1343}, doi = {10.1021/acsomega.9b00992}, author = {Tung, Nguyen Thanh and Philippe Derreumaux and Vu, Van V and Nam, Pham Cam and Ngo, Son Tung} } @article {2017|2039, title = {A Computational Methodology to Overcome the Challenges Associated With the Search for Specific Enzyme Targets to Develop Drugs Against.}, journal = {Bioinform Biol Insights}, volume = {11}, year = {2017}, month = {2017}, pages = {1177932217712471}, abstract = {

We present an approach for detecting enzymes that are specific ofcompared withand provide targets that may assist research in drug development. This approach is based on traditional techniques of sequence homology comparison by similarity search and Markov modeling; it integrates the characterization of enzymatic functionality, secondary and tertiary protein structures, protein domain architecture, and metabolic environment. From 67 enzymes represented by 42 enzymatic activities classified by AnEnPi (Analogous Enzymes Pipeline) as specific forcompared with, only 40 (23 Enzyme Commission [EC] numbers) could actually be considered as strictly specific ofand 27 enzymes (19 EC numbers) were disregarded for having ambiguous homologies or analogies with. Among the 40 strictly specific enzymes, we identified sterol 24-C-methyltransferase, pyruvate phosphate dikinase, trypanothione synthetase, and RNA-editing ligase as 4 essential enzymes forthat may serve as targets for drug development.

}, issn = {1177-9322}, doi = {10.1177/1177932217712471}, author = {Catharina, Larissa and Lima, Carlyle Ribeiro and Franca, Alexander and Guimar{\~a}es, Ana Carolina Ramos and Alves-Ferreira, Marcelo and Tuffery, Pierre and Philippe Derreumaux and Carels, Nicolas} } @article {2017|2032, title = {Conformational Ensembles of the Wild-Type and S8C Aβ1-42 Dimers.}, journal = {J Phys Chem B}, volume = {121}, year = {2017}, month = {2017 Mar 23}, pages = {2434-2442}, abstract = {

We characterized the dimer of the amyloid-β wild-type (WT) peptide, Aβ, of 42 residues and its disulfide-bond-locked double mutant (S8C) by replica exchange molecular dynamics simulations. Aβ dimers are known to be the smallest toxic species in Alzheimer\&$\#$39;s disease, and the S8C mutant has been shown experimentally to form an exclusive homogeneous and neurotoxic dimer. Our 50 μs all-atom simulations reveal similar secondary structures and collision cross-sections but very different intramolecular and intermolecular conformations upon double S8C mutation. Both dimers are very dynamic with hundreds of free-energy minima that differ from the U-shape and S-shape conformations of the peptides in the fibrils. The only common structural feature, shared by both species with a probability of 4\% in WT and 12\% in S8C-S8C, is a three-stranded β-sheet spanning the 17-23, 29-36, and 39-41 residues, which does not exist in the Aβ40 WT dimers.

}, issn = {1520-5207}, doi = {10.1021/acs.jpcb.7b00267}, author = {Man, Viet Hoang and Phuong Hoang Nguyen and Philippe Derreumaux} } @article {2016|1656, title = {Coarse-grained and All-atom Simulations towards the Early and Late Steps of Amyloid Fibril Formation}, journal = {Isr. J. Chem.}, volume = {DOI: 10.1002/ijch.201600048.}, year = {2016}, author = {M. Chiricotto and Thanh-Thuy Tran and Phuong Hoang Nguyen and S. Melchionna and Fabio Sterpone and Philippe Derreumaux} } @article {2016|1707, title = {Coarse-Grained Simulations Complemented by Atomistic Molecular Dynamics Provide New Insights into Folding and Unfolding of Human Telomeric G-Quadruplexes}, journal = {J. Chem. Theory Comput.}, volume = {12}, number = {12}, year = {2016}, month = {dec}, pages = {6077{\textendash}6097}, abstract = {G-quadruplexes are the most important non canonical DNA architectures. Many quadruplex-forming sequences, including the human telomeric sequence d(GGGTTA)(n), have been investigated due to their implications in cancer and other diseases, and because of their potential in DNA-based nanotechnology. Despite the availability of atomistic structural studies of folded G-quadruplexes, their folding pathways remain mysterious, and mutually contradictory models of folding coexist in the literature. Recent experiments convincingly demonstrated that G-quadruplex folding often takes days to reach thermodynamic equilibrium. Based on atomistic simulations of diverse classes of intermediates in G-quadruplex folding, we have suggested that the folding is an extremely multipathway process combining a kinetic partitioning mechanism with conformational diffusion. However, complete G-quadruplex folding is far beyond the time scale of atomistic simulations. Here we use high-resolution coarse-grained simulations to investigate potential unfolding intermediates, whose structural dynamics are then further explored with all-atom simulations. This multiscale approach indicates how various pathways are interconnected in a complex network. Spontaneous conversions between different folds are observed. We demonstrate the inability of simple order parameters, such as radius of gyration or the number of native H-bonds, to describe the folding landscape of the G-quadruplexes. Our study also provides information relevant to further development of the coarse grained force field.}, issn = {1549-9618}, doi = {10.1021/acs.jctc.6b00667}, author = {Stadlbauer, Petr and Mazzanti, Liuba and Cragnolini, Tristan and Wales, David J. and Philippe Derreumaux and Pasquali, Samuela and Sponer, Jiri} } @article {2015|1708, title = {Coarse-Grained HiRE-RNA Model for ab Initio RNA Folding beyond Simple Molecules, Including Noncanonical and Multiple Base Pairings}, journal = {J. Chem. Theory Comput.}, volume = {11}, number = {7}, year = {2015}, pages = {3510{\textendash}3522}, doi = {10.1021/acs.jctc.5b00200}, author = {Cragnolini, Tristan and Laurin, Yoann and Philippe Derreumaux and Pasquali, Samuela} } @article {2015|1635, title = {Combined Experimental and Simulation Studies Suggest a Revised Mode of Action of the Anti-Alzheimer Disease Drug NQ-Trp}, journal = {Chemistry-a European Journal}, volume = {21}, number = {36}, year = {2015}, pages = {12657{\textendash}12666}, doi = {10.1002/chem.201500888}, author = {Berthoumieu, Olivia and Phuong Hoang Nguyen and del Castillo-Frias, Maria P. and Ferre, Sabrina and Tarus, Bogdan and Nasica-Labouze, Jessica and Noel, Sabrina and Saurel, Olivier and Rampon, Claire and Doig, Andrew J. and Philippe Derreumaux and Faller, Peter} } @article {2015|1768, title = {Communication: Multiple atomistic force fields in a single enhanced sampling simulation.}, journal = {The Journal of Chemical Physics}, volume = {143}, number = {2}, year = {2015}, month = {jul}, pages = {021101{\textendash}021101}, doi = {10.1063/1.4926535}, author = {Hoang Viet, Man and Philippe Derreumaux and Phuong Hoang Nguyen} } @article {2015|1704, title = {Communication: Multiple atomistic force fields in a single enhanced sampling simulation}, journal = {J. Chem. Phys.}, volume = {143}, number = {2}, year = {2015}, month = {jul}, pages = {021101}, doi = {10.1063/1.4926535}, author = {Man Hoang Viet and Philippe Derreumaux and Phuong Hoang Nguyen} } @conference {2014|1784, title = {Coarse-Grain RNA Folding: Towards More Complex Structures}, booktitle = {Biophys. J.}, volume = {106}, number = {2, 1}, year = {2014}, note = {58th Annual Meeting of the Biophysical-Society, San Francisco, CA, FEB 15-19, 2014}, month = {jan}, pages = {283A}, author = {Cragnolini, Tristan and Laurin, Yoann and Philippe Derreumaux and Pasquali, Samuela} } @article {2013|1498, title = {coarse-grained models for protein folding ang aggregation}, journal = {Methods Mol. Biol.}, volume = {924}, year = {2013}, pages = {585{\textendash}600}, author = {Philippe Derreumaux} } @article {2013|1923, title = {Coarse-Grained Simulations of RNA and DNA Duplexes}, journal = {J. Phys. Chem. B}, volume = {117}, number = {27}, year = {2013}, month = {jul}, pages = {8047{\textendash}8060}, doi = {10.1021/jp400786b}, author = {Cragnolini, Tristan and Philippe Derreumaux and Pasquali, Samuela} } @article {2013|1887, title = {Communication: Simulated tempering with fast on-the-fly weight determination}, journal = {J. Chem. Phys.}, volume = {138}, number = {6}, year = {2013}, month = {feb}, pages = {061102}, doi = {10.1063/1.4792046}, author = {Phuong Hoang Nguyen and Okamoto, Yuko and Philippe Derreumaux} } @article {2013|1924, title = {Conformational Ensemble and Polymorphism of the All-Atom Alzheimer{\textquoteright}s A beta(37-42) Amyloid Peptide Oligomers}, journal = {J. Phys. Chem. B}, volume = {117}, number = {19}, year = {2013}, month = {may}, pages = {5831{\textendash}5840}, doi = {10.1021/jp401563n}, author = {Phuong Hoang Nguyen and Philippe Derreumaux} } @article {2012|1920, title = {The Coarse-Grained OPEP Force Field for Non-Amyloid and Amyloid Proteins}, journal = {J. Phys. Chem. B}, volume = {116}, number = {30}, year = {2012}, month = {aug}, pages = {8741{\textendash}8752}, doi = {10.1021/jp301665f}, author = {Y Chebaro and Pasquali, Samuela and Philippe Derreumaux} } @article {2012|1955, title = {Configurational entropy: an improvement of the quasiharmonic approximation using configurational temperature}, journal = {Phys. Chem. Chem. Phys.}, volume = {14}, number = {20}, year = {2012}, pages = {877{\textendash}886}, doi = {10.1039/c1cp21779h}, author = {Phuong Hoang Nguyen and Philippe Derreumaux} } @article {2011|1610, title = {Carbon Nanotube Inhibits the Formation of beta-Sheet-Rich Oligomers of the Alzheimer{\textquoteright}s Amyloid-beta(16-22) Peptide}, journal = {Biophys. J.}, volume = {101}, number = {9}, year = {2011}, month = {nov}, pages = {2267{\textendash}2276}, doi = {10.1016/j.bpj.2011.09.046}, author = {Li, Huiyu and Luo, Yin and Philippe Derreumaux and Wei, Guanghong} } @conference {2011|1611, title = {Characterization of the Aggregation Pathway for a 20-mer of GNNQQNY using Coarse-Grained and All-Atom Representations}, booktitle = {Biophys. J.}, volume = {100}, number = {3}, year = {2011}, month = {feb}, pages = {Biophys Soc}, author = {Nasica-Labouze, Jessica and Meli, Massimiliano and Philippe Derreumaux and Colombo, Giorgio and Mousseau, Normand} } @article {2009|2017, title = {The Conversion of Helix H2 to beta-Sheet Is Accelerated in the Monomer and Dimer of the Prion Protein upon T183A Mutation}, journal = {J. Phys. Chem. B}, volume = {113}, number = {19}, year = {2009}, month = {may}, pages = {6942{\textendash}6948}, doi = {10.1021/jp900334s}, author = {Y Chebaro and Philippe Derreumaux} } @article {2008|1884, title = {The complex folding pathways of protein A suggest a multiple-funnelled energy landscape}, journal = {J. Chem. Phys.}, volume = {128}, number = {4}, year = {2008}, month = {jan}, pages = {045101}, doi = {10.1063/1.2812562}, author = {St-Pierre, Jean-Francois and Mousseau, Normand and Philippe Derreumaux} } @article {2007|1985, title = {A coarse-grained protein force field for folding and structure prediction}, journal = {Proteins: Struct., Funct., Bioinf.}, volume = {69}, number = {2}, year = {2007}, month = {nov}, pages = {394{\textendash}408}, doi = {10.1002/prot.21505}, author = {Maupetit, Julien and Pierre Tuffery and Philippe Derreumaux} } @article {2007|1882, title = {Coarse-grained protein molecular dynamics simulations}, journal = {J. Chem. Phys.}, volume = {126}, number = {2}, year = {2007}, month = {jan}, pages = {025101}, doi = {10.1063/1.2408414}, author = {Philippe Derreumaux and Mousseau, Normand} } @article {2007|2013, title = {Computational Simulations of the Early Steps of Protein Aggregation}, journal = {Prion}, volume = {1}, number = {1}, year = {2007}, month = {jan}, pages = {3{\textendash}8}, author = {Wei, Guanghong and Mousseau, Normand and Philippe Derreumaux} } @article {2007|1776, title = {The conserved glycine/alanine residue of the active-site loop containing the putative acetylCoA-binding motif is essential for the overall structural integrity of Mesorhizobium loti arylamine N-acetyltransferase 1}, journal = {Biochem. Biophys. Res. Commun.}, volume = {361}, number = {1}, year = {2007}, month = {sep}, pages = {256{\textendash}262}, doi = {10.1016/j.bbrc.2007.07.034}, author = {Atmane, Noureddine and Dairou, Julien and Flatters, Delphine and Martins, Marta and Pluvinage, Benjamin and Philippe Derreumaux and Dupret, Jean-Marie and Rodrigues-Lima, Fernando} } @article {2006|1880, title = {The conformations of the amyloid-beta (21-30) fragment can be described by three families in solution}, journal = {J. Chem. Phys.}, volume = {125}, number = {8}, year = {2006}, month = {aug}, pages = {084911}, doi = {10.1063/1.2337628}, author = {Chen, Wei and Mousseau, Normand and Philippe Derreumaux} } @article {2004|1978, title = {Complex folding pathways in a simple beta-hairpin}, journal = {Proteins: Struct., Funct., Bioinf.}, volume = {56}, number = {3}, year = {2004}, month = {aug}, pages = {464{\textendash}474}, doi = {10.1002/prot.20127}, author = {Wei, GH and Mousseau, N and Philippe Derreumaux} } @article {2004|1807, title = {The C-terminal domain of Escherichia coli Hfq increases the stability of the hexamer}, journal = {Eur. J. Biochem.}, volume = {271}, number = {7}, year = {2004}, month = {apr}, pages = {1258{\textendash}1265}, doi = {10.1111/j.1432-1033.2004.04026.x}, author = {Arluison, V and Folichon, M and Marco, S and Philippe Derreumaux and Pellegrini, O and Seguin, J and Hajnsdorf, E and Regnier, P} } @article {2001|1989, title = {Computer simulations aimed at structure prediction of supersecondary motifs in proteins}, journal = {Proteins-structure Function and Genetics}, volume = {45}, number = {2}, year = {2001}, month = {nov}, pages = {159{\textendash}166}, doi = {10.1002/prot.1135}, author = {Forcellino, F and Philippe Derreumaux} } @article {1993|1907, title = {COMPARISON OF THE IR AND RAMAN VIBRATIONAL FREQUENCIES AND INTENSITIES OF ALKANES USING THE AMBER AND SPASIBA FORCE-FIELDS - APPLICATION TO ETHANE, AND GAUCHE-N-BUTANE AND TRANS-N-BUTANE}, journal = {J. Mol. Struct.}, volume = {295}, year = {1993}, month = {may}, pages = {223{\textendash}232}, doi = {10.1016/0022-2860(93)85022-M}, author = {Philippe Derreumaux and LAGANT, P and VERGOTEN, G} } @article {1989|1912, title = {CONFORMATIONAL STUDIES OF NEUROACTIVE LIGANDS .1. FORCE-FIELD AND VIBRATIONAL-SPECTRA OF CRYSTALLINE ACETYLCHOLINE}, journal = {J. Phys. Chem.}, volume = {93}, number = {4}, year = {1989}, month = {feb}, pages = {1338{\textendash}1350}, doi = {10.1021/j100341a033}, author = {Philippe Derreumaux and WILSON, KJ and VERGOTEN, G and PETICOLAS, WL} } @article {1989|1913, title = {CONFORMATIONAL STUDIES OF NEUROACTIVE LIGANDS .2. SOLUTION-STATE CONFORMATIONS OF ACETYLCHOLINE}, journal = {J. Phys. Chem.}, volume = {93}, number = {4}, year = {1989}, month = {feb}, pages = {1351{\textendash}1357}, doi = {10.1021/j100341a034}, author = {WILSON, KJ and Philippe Derreumaux and VERGOTEN, G and PETICOLAS, WL} }