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Ageeva AA, Doktorov AB, Polyakov NE, Leshina TV. Chiral Linked Systems as a Model for Understanding D-Amino Acids Influence on the Structure and Properties of Amyloid Peptides. Int J Mol Sci 2022; 23:ijms23063060. [PMID: 35328481 PMCID: PMC8955658 DOI: 10.3390/ijms23063060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/10/2022] [Indexed: 01/27/2023] Open
Abstract
In this review, we provide an illustration of the idea discussed in the literature of using model compounds to study the effect of substitution of L- for D-amino acid residues in amyloid peptides. The need for modeling is due to the inability to study highly disordered peptides by traditional methods (high-field NMR, X-ray). At the same time, the appearance of such peptides, where L-amino acids are partially replaced by D-analogs is one of the main causes of Alzheimer’s disease. The review presents examples of the use diastereomers with L-/D-tryptophan in model process—photoinduced electron transfer (ET) for studying differences in reactivity and structure of systems with L- and D-optical isomers. The combined application of spin effects, including those calculated using the original theory, fluorescence techniques and molecular modeling has demonstrated a real difference in the structure and efficiency of ET in diastereomers with L-/D-tryptophan residues. In addition, the review compared the factors governing chiral inversion in model metallopeptides and Aβ42 amyloid.
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Affiliation(s)
- Aleksandra A. Ageeva
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (N.E.P.); (T.V.L.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Alexander B. Doktorov
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (N.E.P.); (T.V.L.)
- Correspondence: author:
| | - Nikolay E. Polyakov
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (N.E.P.); (T.V.L.)
| | - Tatyana V. Leshina
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (N.E.P.); (T.V.L.)
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Ohno K, Kishimoto N, Iwamoto T, Satoh H, Watanabe H. High performance global exploration of isomers and isomerization channels on quantum chemical potential energy surface of H 5 C 2 NO 2. J Comput Chem 2021; 42:192-204. [PMID: 33146910 DOI: 10.1002/jcc.26446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/14/2020] [Accepted: 10/16/2020] [Indexed: 11/07/2022]
Abstract
High performance global exploration of isomers and isomerization channels on the quantum chemical potential energy surface (PES) is performed for H5 C2 NO2 by using the scaled hypersphere search-anharmonic downward distortion following (SHS-ADDF) method. A multi-node operation, NeoGRRM, has achieved high performance exploration calculations for the large system by submitting SHS-ADDF sub-jobs into many cores in parallel and unifying the results of sub-jobs into the total lists of the main-job. Global exploration of equilibrium (EQ) and transition-state structures at the level of B3LYP/6-31G(d) gave 3210 EQs and 23278 TSs. Nine compounds were found in the low energy regions of 0-100 kJ/mol; the lowest energy compound is N-methylcarbamic acid, the second is methyl carbamate, and the third is glycine (the most fundamental amino acid). Interconversion pathways between the conformers of each of the low energy compounds were surveyed. Isomerization channels around glycine were explored in detail. The lowest energy barriers around some of the EQs turned to be negative after zero-point energy corrections. This indicates that those structures cannot exist as independent structures because they spontaneously collapse into more stable structures. The global PES search showed various interesting dissociating channels which indicate synthon reaction pathways in the reverse directions.
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Affiliation(s)
- Koichi Ohno
- Institute for Quantum Chemical Exploration, Tokyo, Japan.,Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Naoki Kishimoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Hiroko Satoh
- Institute for Quantum Chemical Exploration, Tokyo, Japan.,Department of Chemistry, University of Zurich, Zurich, Switzerland.,Research Organization of Information and Systems (ROIS), Tokyo, Japan
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Ageeva AA, Babenko SV, Polyakov NE, Leshina TV. NMR investigation of photoinduced chiral inversion in (R)/(S)-naproxen–(S)-tryptophan linked system. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kaur R, Rani N, Vikas. Gas-Phase Stereoinversion in Aspartic Acid: Reaction Pathways, Computational Spectroscopic Analysis, and Its Astrophysical Relevance. ACS OMEGA 2018; 3:14431-14447. [PMID: 31458129 PMCID: PMC6645146 DOI: 10.1021/acsomega.8b01721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/15/2018] [Indexed: 05/16/2023]
Abstract
Noncatalytic reaction pathways for the gas-phase stereoinversion in aspartic acid are mapped employing a global reaction route mapping strategy using quantum mechanical computations. The species including the transition states (TSs) traced along the stereoinversion pathways are characterized using rotational and vibrational computational spectroscopic analysis while accounting for the vibrational corrections to rotational constants and anharmonic effects. Notably, the TS structures traced along the stereochemical pathways resemble the achiral ammonium ylide and imine intermediates as observed in the Strecker synthesis of chiral amino acids. A few of the probable stereoinversion pathways proposed proceed through the proton or hydrogen atom transfer. The feasibility of the pathways under conditions akin to interstellar medium (ISM) is further discussed in terms of natural bond orbital analysis. The stereoinversion pathways proposed in this work may proceed via photoirradiation in the ISM, which though can be revealed by exploring the excited-state potential energy surface. In this context, the spectroscopic data generated in this work can provide valuable assistance toward the astrophysical detection of chiral molecules in outer space.
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Affiliation(s)
- Ramanpreet Kaur
- Quantum Chemistry Group, Department
of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Namrata Rani
- Quantum Chemistry Group, Department
of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Vikas
- Quantum Chemistry Group, Department
of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
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Rani N, Vikas. Mechanism and Kinetics of the Gas-Phase Stereoinversion in Proteinogenic l-Threonine and Its Astrophysical Relevance. J Phys Chem A 2018; 122:7572-7586. [DOI: 10.1021/acs.jpca.8b06659] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Namrata Rani
- Quantum Chemistry Group, Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Vikas
- Quantum Chemistry Group, Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
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Kaur R, Vikas. Conflict in the Mechanism and Kinetics of the Barrierless Reaction between SH and NO 2 Radicals. J Phys Chem A 2018; 122:1926-1937. [PMID: 29457904 DOI: 10.1021/acs.jpca.7b06916] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There are some unsettled issues regarding the mechanism and kinetics of an important atmospheric reaction of NO2 radical with the SH radical. The existing mechanism is based on the formation of HSO and NO radicals, both of which can result only along one barrierless channel. However, the detection of NO radical has never been reported though the formation of HSO radical has been followed in some studies to determine the rate constants. The latter are mainly obtained by monitoring the SH decay, but rate constants are reported to be highly conflicting among the existing studies reporting its value ranging from 10-10 to 10-12 cm3 molecule-1 sec-1. The present work attempts to resolve these issues by exploring various reaction pathways through the global reaction route mapping of the potential energy surface at the level of spin-unrestricted and spin-restricted coupled-cluster and density functional theories. The initial association of two radicals was found to proceed via two barrierless modes: (1) S-N association leading to HSNO2 and, (2) S-O association resulting in HSONO, in particular the cis-isomer. The kinetics of the barrierless pathways was investigated through rate constants computed using canonical variational transition state theory (CVTST) along with their temperature and pressure dependence investigated using the master equation. The rate constants calculated using spin-unrestricted methods are found to be in agreement with experimentally observed range of rate constant, and the formation of cis-HSONO (via mode 2) is observed to be the main contributing channel. Contrary to the results of spin-restricted calculations, the barrierless channel (mode 1) leading to the formation of HSNO2 is predicted to involve two bottlenecks when results using spin-unrestricted calculations were analyzed. Notably, the spin-unrestricted calculations predict a prereaction complex for the formation of S-N bond (via mode 1) which has been treated using Miller's unified transition state theory with a two transition state model. The fate of all the species involved in the reaction is critically evaluated in the present work, and the predictions made can be a subject of further experimental and theoretical studies involving radical-radical reactions.
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Affiliation(s)
- Ramanpreet Kaur
- Quantum Chemistry Group, Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University , Chandigarh 160014, India
| | - Vikas
- Quantum Chemistry Group, Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University , Chandigarh 160014, India
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7
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From nitrogen inversion in amines to stereoinversion in aminium salts: role of a single water molecule. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2090-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ohno K, Kishimoto N, Iwamoto T, Satoh H. Global exploration of isomers and isomerization channels on the quantum chemical potential energy surface of H3
CNO3. J Comput Chem 2017; 38:669-687. [DOI: 10.1002/jcc.24732] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 12/23/2016] [Accepted: 12/29/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Koichi Ohno
- Institute for Quantum Chemical Exploration, Kaigan 3-9-15; Minato-ku Tokyo 108-0022 Japan
- Department of Chemistry; Graduate School of Science, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba-ku; Sendai Miyagi 980-8577 Japan
| | - Naoki Kishimoto
- Department of Chemistry; Graduate School of Science, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba-ku; Sendai Miyagi 980-8577 Japan
| | - Takeaki Iwamoto
- Department of Chemistry; Graduate School of Science, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba-ku; Sendai Miyagi 980-8577 Japan
| | - Hiroko Satoh
- Institute for Quantum Chemical Exploration, Kaigan 3-9-15; Minato-ku Tokyo 108-0022 Japan
- Department of Chemistry; University of Zurich; Zurich 8057 Switzerland
- Research Organization of Information and Systems (ROIS); Tokyo 105-0001 Japan
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Vikas V, Sangwan P, Kaur R. Chemical pathways for poly-anionic isomerisation in the metastable anions of tetra-deprotonated naphthalene: an intra-molecular inter-ring proton-transfer. Phys Chem Chem Phys 2017; 19:11571-11580. [DOI: 10.1039/c7cp01006k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An intra-molecular proton-transfer between the two different aromatic rings of naphthalene in the metastable isomeric tetra-anionic species of naphthalene is revealed by this computational work.
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Affiliation(s)
- Vikas Vikas
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
| | - Poonam Sangwan
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
| | - Ramanpreet Kaur
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
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Ohno K. Study of Potential Energy Surfaces towards Global Reaction Route Mapping. CHEM REC 2016; 16:2198-2218. [PMID: 27059804 DOI: 10.1002/tcr.201500284] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Indexed: 11/11/2022]
Abstract
The potential energy surface (PES) is just a theoretical construct based on the Born-Oppenheimer approximation, but it underlies various phenomena, including molecular vibrations, collisional ionizations, and chemical reactions. This account describes how a new idea for global reaction route mapping (GRRM), which had seemed to be impossible for chemical systems with more than three atoms, was born and has been developed during the course of the study of the PES. GRRM has pioneered new fields of chemistry. Furthermore, techniques for GRRM are still developing, and GRRM is further extending its application to various areas of chemistry and chemical physics.
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Affiliation(s)
- Koichi Ohno
- Institute for Quantum Chemical Exploration, Minato-ku, Tokyo, 108-0022, Japan.
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Kaur R, Vikas V. Exploring the role of a single water molecule in the tropospheric reaction of glycolaldehyde with an OH radical: a mechanistic and kinetics study. RSC Adv 2016. [DOI: 10.1039/c6ra01299j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work reveals that though a single-water molecule decelerates the atmospheric reaction between the glycolaldehyde and OH radical, however, it facilitates the cis–trans interconversion along the hydrogen-abstraction pathways.
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Affiliation(s)
- Ramanpreet Kaur
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
| | - Vikas Vikas
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
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12
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Ohno K, Tokoyama H, Yamakado H. A quantum chemical study of novel carbon structures: Prism carbon tubes. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.06.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Exploring the metastability and the pathways for polyanionic isomerization in the dianions and trianions of doubly- and triply-deprotonated benzene. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1695-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Kaur G, Vikas. Exploring the mechanism of isomerisation and water-migration in the water-complexes of amino-acid l-proline: electrostatic potential and vibrational analysis. RSC Adv 2015. [DOI: 10.1039/c5ra06088e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work reveals interesting pathways for water-migration and neutral ↔ zwitterionic isomerisation in the water complexes of l-proline.
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Affiliation(s)
- Gurpreet Kaur
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh – 160014
- India
| | - Vikas
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh – 160014
- India
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15
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Kaur G, Vikas V. Water-catalysis in the gas phase reaction of dithioformic acid with hydroxyl radical: global reaction route mapping of oxidative pathways for hydrogen abstraction. RSC Adv 2015. [DOI: 10.1039/c5ra08741d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Through the advanced quantum mechanical computations, this work investigates the catalytic-role of single water-molecule during hydrogen abstraction, in dithioformic acid, by the OH radical.
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Affiliation(s)
- Gurpreet Kaur
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh – 160014
- India
| | - Vikas Vikas
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh – 160014
- India
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