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Gao Y, Wang B, Hu S, Zhu T, Zhang JZH. An efficient method to predict protein thermostability in alanine mutation. Phys Chem Chem Phys 2022; 24:29629-29639. [PMID: 36449314 DOI: 10.1039/d2cp04236c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The relationship between protein sequence and its thermodynamic stability is a critical aspect of computational protein design. In this work, we present a new theoretical method to calculate the free energy change (ΔΔG) resulting from a single-point amino acid mutation to alanine in a protein sequence. The method is derived based on physical interactions and is very efficient in estimating the free energy changes caused by a series of alanine mutations from just a single molecular dynamics (MD) trajectory. Numerical calculations are carried out on a total of 547 alanine mutations in 19 diverse proteins whose experimental results are available. The comparison between the experimental ΔΔGexp and the calculated values shows a generally good correlation with a correlation coefficient of 0.67. Both the advantages and limitations of this method are discussed. This method provides an efficient and valuable tool for protein design and engineering.
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Affiliation(s)
- Ya Gao
- School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Bo Wang
- Shanghai Engineering Research Center of Molecular Therapeutics & New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
| | - Shiyu Hu
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062, China
| | - Tong Zhu
- Shanghai Engineering Research Center of Molecular Therapeutics & New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China. .,NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062, China
| | - John Z H Zhang
- Shanghai Engineering Research Center of Molecular Therapeutics & New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China. .,NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062, China.,Shenzhen Institute of Synthetic Biology, Faculty of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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2
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Shirkov L, Sladek V. Ab initio relativistic potential energy surface with analytical long-range part of benzene-Rn complex and its application to intermolecular vibrations. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Denisov GS, Denisov IG. More about properties of Morse oscillator. Spectrochim Acta A Mol Biomol Spectrosc 2021; 262:120111. [PMID: 34237688 DOI: 10.1016/j.saa.2021.120111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Using Birge-Sponer extrapolation we have analyzed the approximation of the potential of a real diatomic molecule by the Morse model, which implies a constant value of anharmonicity ωx. The real values of ωx*(v) for each vibrational level are estimated from transition frequencies between neighboring levels. The dependence of ωx* on the vibrational quantum number v up to dissociation is calculated from the literature data for the ground electronic state of H2, O2, Be2, Li2, ArXe, Xe2, Kr2 and the excited state of Li2. Characteristic features of deviations of the anharmonicity parameter x* - x from the Morse model are described.
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Affiliation(s)
- G S Denisov
- Department of Physics, St. Petersburg State University, 3 Uljanovskaya str., Petergof, St. Petersburg 198504, Russia
| | - I G Denisov
- Department of Biochemistry, University of Illinois, Urbana, IL 61801, USA.
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4
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Affiliation(s)
- Junzi Liu
- Department of Chemistry The Johns Hopkins University Baltimore Maryland USA
| | - Lan Cheng
- Department of Chemistry The Johns Hopkins University Baltimore Maryland USA
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5
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Yang L, Lu J, Chen H, Ruckenstein E, Qin Y, Wang T, Sun W, Wang C. Screening and Improving Porous Materials for Ultradeep Desulfurization of Gasoline. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04836] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li Yang
- Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
| | - Jiafeng Lu
- Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
| | - Houyang Chen
- Department of Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200, United States
| | - Eli Ruckenstein
- Department of Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200, United States
| | - Yuanhang Qin
- Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
| | - Tielin Wang
- Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
| | - Wei Sun
- Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
| | - Cunwen Wang
- Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
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Abstract
The normal boiling point (NBP) is a fundamental property of liquids and marks the intersection of the Gibbs energies of the liquid and the gas-phase at ambient pressure. This work provides the first comprehensive demonstration of the calculation of boiling points of atomic liquids through first-principles molecular-dynamics simulations. To this end, thermodynamic integration (TDI) and perturbation theory (TPT) are combined with a density-functional theory (DFT) Hamiltonian, which provides absolute Gibbs energies, internal energies, and entropies of atomic liquids with an accuracy of a few meV/atom. Linear extrapolation to the intersection with the Gibbs energy of a non-interacting gas-phase eventually pins-down the NBPs. While these direct results can already be quite accurate, they are susceptible to a systematic over or underbinding of the employed density functional. It is shown how this dependency can be strongly reduced and the robustness of the method increased through a simple linear correction termed λ-scaling. Eventually, by carefully tuning of the technical parameters of the approach, the walltime per element is reduced from weeks to about a day (10-20k core-hours), enabling extensive testing for B, Al, Na, K, Ca, Sr, Ba, Mn, Cu, Xe, and Hg. This comprehensive benchmark demonstrates the excellent performance and robustness of the approach with a mean absolute deviation (MAD) of less than 2% from experimental NBPs and very similar accuracy for liquid entropies (MAD 2.3 J (mol K)-1, 2% relative). In some cases, the uncertainties in the predictions are several times smaller than the variation between literature values, allowing us to clear out long-standing ambiguities in the NBPs of B and Ba.
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Affiliation(s)
- Jan-Michael Mewes
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4, 53115 Bonn, Germany. and Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, 0632 Auckland, New Zealand
| | - Odile R Smits
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, 0632 Auckland, New Zealand
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7
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Shirkov L, Sladek V, Makarewicz J. Ab initio relativistic potential energy surfaces of benzene-Xe complex with application to intermolecular vibrations. J Chem Phys 2020; 152:114116. [PMID: 32199439 DOI: 10.1063/1.5140728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The benzene-Xe (BXe) complex in its electronic ground state is studied using ab initio methods. Since this complex contains the heavy Xe atom, the relativistic effects cannot be neglected. We test two different approaches that describe the scalar relativistic effects in the framework of the coupled-cluster level of theory with single, double, and perturbative triple excitations, used for the interaction energy calculations. The first one is based on the small core pseudopotential (PP), and the second one is based on the explicit treatment of scalar relativistic effects using the Douglas-Kroll-Hess (DKH) Hamiltonian. A few basis sets are tested with the PP and DKH, and for each one, the analytical potential energy surface (PES) is constructed. It is shown that the difference between PESs determined with PP and DKH methods is small, if the orbitals of the 4d subshell in Xe are correlated. We select the most appropriate approach for the calculation of the potential energy surface of BXe, with respect to accuracy and computational cost. The optimal level of theory includes a small Dunning's basis set for the benzene monomer and a larger PP basis set for Xe supplemented by midbond functions. The PES obtained using such an approach provides a reasonable accuracy when compared to the empirical one derived from the microwave spectra of BXe. The empirical and the theoretical values of intermolecular vibrational energies agree within 0.5 cm-1 up to second overtones. The vibrational energy level pattern of BXe is characterized by a distinct polyad structure.
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Affiliation(s)
- Leonid Shirkov
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland
| | - Vladimir Sladek
- Institute of Chemistry - Centre for Glycomics, Slovak Academy of Sciences, 845 38 Bratislava, Slovakia and Agency for Medical Research and Development (AMED), Chiyoda-ku, Japan
| | - Jan Makarewicz
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland
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Ma M, Liu L, Zhu H, Lu J, Tan G. Structural evolution and ligand effects of (Au1L2)n, (Au2L3)n, and (Au3L4)n [n = 1–3, L = SCH3,P(CH3)2,PH2,Cl] clusters. Molecular Simulation 2019. [DOI: 10.1080/08927022.2019.1630736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Miaomiao Ma
- College of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi, People’s Republic of China
| | - Liren Liu
- College of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi, People’s Republic of China
| | - Hengjiang Zhu
- College of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi, People’s Republic of China
- Key Laboratory of Mineral Luminescence Materials and Micro structures of Xinjiang Uygur Autonomous Region, Urumqi, People’s Republic of China
| | - Junzhe Lu
- College of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi, People’s Republic of China
- Key Laboratory of Mineral Luminescence Materials and Micro structures of Xinjiang Uygur Autonomous Region, Urumqi, People’s Republic of China
| | - Guiping Tan
- College of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi, People’s Republic of China
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Montes RJ, Ladd AJC, Butler JE. Transverse migration and microfluidic concentration of DNA using Newtonian buffers. Biomicrofluidics 2019; 13:044104. [PMID: 31893007 PMCID: PMC6932854 DOI: 10.1063/1.5110718] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 06/30/2019] [Indexed: 06/10/2023]
Abstract
We present experimental evidence that DNA can be concentrated due to an electrohydrodynamic coupling between a pressure-driven flow and a parallel electric field. The effects of buffer properties on the process were measured in a microfluidic channel. The concentration rates and the efficiency of trapping DNA were quantified as functions of the ion and polymer concentrations of the buffer solution. Buffers with large ion concentrations hindered the ability to trap DNA, reducing the short-time efficiency of the concentration process from nearly 100% to zero. Importantly, DNA was trapped in the microfluidic channel even when the buffer solution lacked any measurable viscoelastic response. These observations indicate that electrohydrodynamic migration drives the concentration of DNA. We found no evidence of viscoelastic migration in these experiments.
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Affiliation(s)
- Ryan J Montes
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA
| | - Anthony J C Ladd
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA
| | - Jason E Butler
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA
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Jerabek P, Smits OR, Mewes JM, Peterson KA, Schwerdtfeger P. Solid Oganesson via a Many-Body Interaction Expansion Based on Relativistic Coupled-Cluster Theory and from Plane-Wave Relativistic Density Functional Theory. J Phys Chem A 2019; 123:4201-4211. [DOI: 10.1021/acs.jpca.9b01947] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul Jerabek
- Department for Molecular Theory and Spectroscopy, Max-Planck-Institut für Kohlenforschung (KOFO), Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Odile R. Smits
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, Private Bag 102904, 0632 Auckland, New Zealand
| | - Jan-Michael Mewes
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, Private Bag 102904, 0632 Auckland, New Zealand
| | - Kirk A. Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Peter Schwerdtfeger
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, Private Bag 102904, 0632 Auckland, New Zealand
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11
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Smits OR, Jerabek P, Pahl E, Schwerdtfeger P. Ein hundert Jahre altes Experiment auf dem Prüfstand: hochgenaue Ab-Initio-Monte-Carlo-Schmelzsimulationen von Radon. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803353] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Odile R. Smits
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland Neuseeland
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norwegen
| | - Paul Jerabek
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland Neuseeland
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norwegen
| | - Elke Pahl
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland Neuseeland
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norwegen
| | - Peter Schwerdtfeger
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland Neuseeland
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norwegen
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12
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Smits OR, Jerabek P, Pahl E, Schwerdtfeger P. A Hundred-Year-Old Experiment Re-evaluated: Accurate Ab Initio Monte Carlo Simulations of the Melting of Radon. Angew Chem Int Ed Engl 2018; 57:9961-9964. [DOI: 10.1002/anie.201803353] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Odile R. Smits
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland New Zealand
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norway
| | - Paul Jerabek
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland New Zealand
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norway
| | - Elke Pahl
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland New Zealand
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norway
| | - Peter Schwerdtfeger
- The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Science; Massey University (Albany); 0632 Auckland New Zealand
- The Centre for Advanced Study (CAS) at the; Norwegian Academy of Science and Letters; Drammensveien 78 0271 Oslo Norway
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Abstract
A relation M_{SHS→LJ} between the set of nonisomorphic sticky-hard-sphere clusters M_{SHS} and the sets of local energy minima M_{LJ} of the (m,n)-Lennard-Jones potential V_{mn}^{LJ}(r)=ɛ/n-m[mr^{-n}-nr^{-m}] is established. The number of nonisomorphic stable clusters depends strongly and nontrivially on both m and n and increases exponentially with increasing cluster size N for N≳10. While the map from M_{SHS}→M_{SHS→LJ} is noninjective and nonsurjective, the number of Lennard-Jones structures missing from the map is relatively small for cluster sizes up to N=13, and most of the missing structures correspond to energetically unfavorable minima even for fairly low (m,n). Furthermore, even the softest Lennard-Jones potential predicts that the coordination of 13 spheres around a central sphere is problematic (the Gregory-Newton problem). A more realistic extended Lennard-Jones potential chosen from coupled-cluster calculations for a rare gas dimer leads to a substantial increase in the number of nonisomorphic clusters, even though the potential curve is very similar to a (6,12)-Lennard-Jones potential.
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Affiliation(s)
- Lukas Trombach
- Centre for Theoretical Chemistry and Physics, New Zealand Institute for Advanced Study, Massey University Auckland, Private Bag 102904, 0632 Auckland, New Zealand
| | - Robert S Hoy
- Department of Physics, University of South Florida, Tampa, Florida 33620, USA
| | - David J Wales
- University Chemical Laboratories, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Peter Schwerdtfeger
- Centre for Theoretical Chemistry and Physics, New Zealand Institute for Advanced Study, Massey University Auckland, Private Bag 102904, 0632 Auckland, New Zealand
- Centre for Advanced Study (CAS) at the Norwegian Academy of Science and Letters, Drammensveien 78, NO-0271 Oslo, Norway
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