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Ucur B, Shiels OJ, Blanksby SJ, Trevitt AJ. Observation of Solvent-Dependence in the Mechanism of Neutral-Catalyzed Isomerization of para-Aminobenzoic Acid Protomers. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1128-1137. [PMID: 38523556 DOI: 10.1021/jasms.3c00433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Proton-transfer reactions are commonplace during electrospray ionization (ESI) mass spectrometry experiments and are often responsible for imparting charge to analyte molecules. Multiple protonation-site isomers (protomers) can arise for polyfunctional molecules and these isomers can interconvert via solvent-mediated proton transfer reactions during various stages of the ESI process. Studying the populations and interconversion of protonation isomers provides key insight into the ESI process, ion-molecule interactions, and ion dissociation mechanisms. An archetype molecule to study protomer interconversion fundamentals in this context is para-aminobenzoic acid (pABA), where both the amino and carboxylic acid protomers are typically formed under ESI and the mechanisms for interconversion are still under refinement. Using ion-trap mass spectrometry reaction kinetics (2.5 mTorr, 300 K), this study examines gas-phase interconversion catalysis of pABA protomers by seven neutral species, which are commen solvents and additives used for ESI: water, formic acid, methanol, ethanol, propanol, ammonia, and acetonitrile. Three distinct reaction cases are reported: (i) formic acid, methanol, ethanol, propanol, and ammonia each catalyze the interconversion between the amino and carboxylic acid protomers via a n = 1 solvent-molecule vehicle mechanism; (ii) for water, however, a n = 6 adduct complex is detected and this suggests that the observed protomer interconversion occurs through a Grotthuss mechanism, in accord with literature reports; (iii) acetonitrile inhibits proton transfer by the formation of particularly stable n = 1 and 2 adduct complexes. The second-order rate constants for the protomer interconversion are observed to increase in the following order: H2O < HCO2H < MeOH < EtOH < PrOH < NH3. Potential energy schemes are reported for all neutral-catalyzed proton transfer reactions using the DSD-PBEP86-D3(BJ)/aug-cc-pVDZ level of theory. A central transition state, which connects the protonation site adducts, is shown to be the key rate-limiting step. The energy of this transition state is sensitive to the proton affinity of the neutral solvent, and this is supported by the correlation between the reaction rate and the solvent proton affinity.
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Affiliation(s)
- Boris Ucur
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Oisin J Shiels
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Stephen J Blanksby
- Central Analytical Research Facility and the School of Chemistry and Physics, Queensland University of Technology, Brisbane 4001, Australia
| | - Adam J Trevitt
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
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2
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Sengupta PK. Excited state proton transfer based two color fluorescence: Perspectives and some biophysical applications. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Nandy A, Pramanik U, Mahato P, Shekhar S, Paul BK, Mukherjee S. Contrasting Thermodynamics Governs the Interaction of 3-Hydroxyflavone with the N-Isoform and B-Isoform of Human Serum Albumin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8570-8579. [PMID: 32600049 DOI: 10.1021/acs.langmuir.0c01362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Herein we report the interaction of 3-hydroxyflavone (3HF) with various isomeric forms of Human Serum Albumin (HSA), namely, the N-isoform (or native HSA at pH 7.4) and the B-isoform (at pH 9.2). Spectroscopic signatures of 3HF reveal that the interaction of 3HF with the N-isoform of HSA results in significant lowering of absorbance of the neutral species (λabs ∼ 345 nm) with concomitant increase of the anionic species (λabs ∼ 416 nm) whereas interaction with the B-isoform of HSA leads to selective enhancement of absorbance of the anionic species. The fluorescence profile of 3HF displays marked increase of intensity of the proton transferred tautomer (λem ∼ 538 nm) as well as the anionic species (λem ∼ 501 nm) for both the forms of the protein. However, analyses of the associated thermodynamics through temperature-dependent isothermal titration calorimetric (ITC) indicate that the interaction of 3HF with the N-isoform of HSA is more enthalpic in the lower temperature limit while the entropy contribution predominates in the higher temperature limit. Consequently, the 3HF-HSA (N-isoform at pH 7.4) interaction reveals an unusual thermodynamic signature of a positive heat capacity change (ΔCp = 3.84 kJ mol-1K-1) suggesting the instrumental role of hydrophobic hydration. On the contrary, the 3HF-HSA (B-isoform at pH 9.2) interaction shows qualitatively reverse effect. Consequently, the interaction is found to be characterized by an enthalpy-dominated hydrophobic effect (negative heat capacity change, ΔCp = -1.15 kJ mol-1K-1) which is rationalized on the basis of the nonclassical hydrophobic effect.
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Affiliation(s)
- Atanu Nandy
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Ushasi Pramanik
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Paritosh Mahato
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Shashi Shekhar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Bijan K Paul
- Department of Chemistry, Mahadevananda Mahavidyalaya, Barrackpore, Kolkata 700120, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
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Zou Z, Liao X, Yang L, Huang Z, Yang H, Yan Q, Zhang Y, Qing Z, Zhang L, Feng F, Yang R. Human Serum Albumin-Occupying-Based Fluorescence Turn-On Analysis of Antiepileptic Drug Tiagabine Hydrochloride. Anal Chem 2020; 92:3555-3562. [DOI: 10.1021/acs.analchem.9b03507] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhen Zou
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Xiaodou Liao
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Le Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410112, P. R. China
| | - Ziyun Huang
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Hua Yang
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Qi Yan
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Yufei Zhang
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Zhihe Qing
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Lihua Zhang
- College of Chemistry and Environmental Engineering, Shanxi Datong University, Datong, Shanxi 037009, P. R. China
| | - Feng Feng
- College of Chemistry and Environmental Engineering, Shanxi Datong University, Datong, Shanxi 037009, P. R. China
| | - Ronghua Yang
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410112, P. R. China
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5
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Das S, Sarmah S, Singha Roy A. Monitoring fluorescence emission behaviors of dietary polyphenols in a serum albumin environment. NEW J CHEM 2020. [DOI: 10.1039/c9nj03938d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Kaempferol can be used as a multi-wavelength fluorescent probe due to its dual emission characteristics in a serum albumin environment.
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Affiliation(s)
- Sourav Das
- Department of Chemistry
- National Institute of Technology Meghalaya
- Shillong-793003
- India
| | - Sharat Sarmah
- Department of Chemistry
- National Institute of Technology Meghalaya
- Shillong-793003
- India
| | - Atanu Singha Roy
- Department of Chemistry
- National Institute of Technology Meghalaya
- Shillong-793003
- India
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Vanossi D, Caselli M, Pavesi G, Borsari C, Linciano P, Costi MP, Ponterini G. Excited-state intramolecular proton transfer in a bioactive flavonoid provides fluorescence observables for recognizing its engagement with target proteins. Photochem Photobiol Sci 2019; 18:2270-2280. [DOI: 10.1039/c9pp00026g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Intra- vs. intermolecular hydrogen-bond formation and ESIPT in a bioactive flavonoid result in different emission properties and provide a clue for recognizing its binding to target proteins.
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Affiliation(s)
- Davide Vanossi
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia (UNIMORE)
- 41125 Modena
- Italy
| | - Monica Caselli
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia (UNIMORE)
- 41125 Modena
- Italy
| | - Giorgia Pavesi
- Department of Life Sciences
- University of Modena and Reggio Emilia (UNIMORE)
- 41125 Modena
- Italy
| | - Chiara Borsari
- Department of Life Sciences
- University of Modena and Reggio Emilia (UNIMORE)
- 41125 Modena
- Italy
| | - Pasquale Linciano
- Department of Life Sciences
- University of Modena and Reggio Emilia (UNIMORE)
- 41125 Modena
- Italy
| | - Maria Paola Costi
- Department of Life Sciences
- University of Modena and Reggio Emilia (UNIMORE)
- 41125 Modena
- Italy
| | - Glauco Ponterini
- Department of Life Sciences
- University of Modena and Reggio Emilia (UNIMORE)
- 41125 Modena
- Italy
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7
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Pahari B, Chakraborty S, Sengupta PK. Molecular insight into the inclusion of the dietary plant flavonol fisetin and its chromophore within a chemically modified γ-cyclodextrin: Multi-spectroscopic, molecular docking and solubility studies. Food Chem 2018; 260:221-230. [DOI: 10.1016/j.foodchem.2018.03.128] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 03/22/2018] [Accepted: 03/27/2018] [Indexed: 12/20/2022]
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8
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Yang L, Yang W, Wu Z, Yi Z. Binding of hydroxylated polybrominated diphenyl ethers with human serum albumin: Spectroscopic characterization and molecular modeling. LUMINESCENCE 2017; 32:978-987. [DOI: 10.1002/bio.3280] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 12/01/2016] [Accepted: 12/16/2016] [Indexed: 01/23/2023]
Affiliation(s)
- Lulu Yang
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area College of Chemistry and Bioengineering; Guilin University of Technology; Guilin China
| | - Wu Yang
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area College of Chemistry and Bioengineering; Guilin University of Technology; Guilin China
| | - Zhiwei Wu
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area College of Chemistry and Bioengineering; Guilin University of Technology; Guilin China
| | - Zhongsheng Yi
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area College of Chemistry and Bioengineering; Guilin University of Technology; Guilin China
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9
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Pharmacologically Active Plant Flavonols as Proton Transfer Based Multiparametric Fluorescence Probes Targeting Biomolecules: Perspectives and Prospects. REVIEWS IN FLUORESCENCE 2016 2017. [DOI: 10.1007/978-3-319-48260-6_4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Pawar SK, Punith R, Naik RS, Seetharamappa J. Spectroscopic and molecular modeling approaches to investigate the binding of proton pump inhibitors to human serum albumin. J Biomol Struct Dyn 2016; 35:3205-3220. [DOI: 10.1080/07391102.2016.1251337] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Suma K. Pawar
- Department of Chemistry, Karnatak University, Dharwad 580003, India
| | - Reeta Punith
- Department of Chemistry, Karnatak University, Dharwad 580003, India
| | - Roopa S. Naik
- Department of Chemistry, Karnatak University, Dharwad 580003, India
| | - J. Seetharamappa
- Department of Chemistry, Karnatak University, Dharwad 580003, India
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11
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Bhattacharjee S, Chakraborty S, Sengupta PK, Bhowmik S. Exploring the Interactions of the Dietary Plant Flavonoids Fisetin and Naringenin with G-Quadruplex and Duplex DNA, Showing Contrasting Binding Behavior: Spectroscopic and Molecular Modeling Approaches. J Phys Chem B 2016; 120:8942-52. [DOI: 10.1021/acs.jpcb.6b06357] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Snehasish Bhattacharjee
- Department of Biophysics, Molecular Biology & Bioinformatics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Sandipan Chakraborty
- Department
of Microbiology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, India
| | - Pradeep K. Sengupta
- Department of Biophysics, Molecular Biology & Bioinformatics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Sudipta Bhowmik
- Department of Biophysics, Molecular Biology & Bioinformatics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700009, India
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12
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Zhang J, Chen W, Tang B, Zhang W, Chen L, Duan Y, Zhu Y, Zhu Y, Zhang Y. Interactions of 1-hydroxypyrene with bovine serum albumin: insights from multi-spectroscopy, docking and molecular dynamics simulation methods. RSC Adv 2016. [DOI: 10.1039/c6ra00981f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Combining multi-spectroscopy, docking with MD simulations, the interactions of 1-hydroxypyrene with BSA and the adverse effects on BSA were investigated.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Marine Environmental Sciences of China (Xiamen University)
- College of Environment and Ecology
- Xiamen University
- Xiamen
- China
| | - Weixiao Chen
- State Key Laboratory of Marine Environmental Sciences of China (Xiamen University)
- College of Environment and Ecology
- Xiamen University
- Xiamen
- China
| | - Bowen Tang
- College of Pharmaceutical Sciences
- Xiamen University
- Xiamen 361102
- China
| | - Wei Zhang
- State Key Laboratory of Marine Environmental Sciences of China (Xiamen University)
- College of Environment and Ecology
- Xiamen University
- Xiamen
- China
| | - Linfeng Chen
- State Key Laboratory of Marine Environmental Sciences of China (Xiamen University)
- College of Environment and Ecology
- Xiamen University
- Xiamen
- China
| | - Ying Duan
- State Key Laboratory of Marine Environmental Sciences of China (Xiamen University)
- College of Environment and Ecology
- Xiamen University
- Xiamen
- China
| | - Yuxiu Zhu
- State Key Laboratory of Marine Environmental Sciences of China (Xiamen University)
- College of Environment and Ecology
- Xiamen University
- Xiamen
- China
| | - Yaxian Zhu
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- China
| | - Yong Zhang
- State Key Laboratory of Marine Environmental Sciences of China (Xiamen University)
- College of Environment and Ecology
- Xiamen University
- Xiamen
- China
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13
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Siraj N, El-Zahab B, Hamdan S, Karam TE, Haber LH, Li M, Fakayode SO, Das S, Valle B, Strongin RM, Patonay G, Sintim HO, Baker GA, Powe A, Lowry M, Karolin JO, Geddes CD, Warner IM. Fluorescence, Phosphorescence, and Chemiluminescence. Anal Chem 2015; 88:170-202. [PMID: 26575092 DOI: 10.1021/acs.analchem.5b04109] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Noureen Siraj
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Bilal El-Zahab
- Department of Mechanical and Materials Engineering, Florida International University , Miami, Florida 33174, United States
| | - Suzana Hamdan
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Tony E Karam
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Louis H Haber
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Min Li
- Process Development Center, Albemarle Corporation , Baton Rouge, Louisiana 70805, United States
| | - Sayo O Fakayode
- Department of Chemistry, Winston-Salem State University , Winston-Salem, North Carolina 27110, United States
| | - Susmita Das
- Department of Civil Engineering, Adamas Institute of Technology , Barasat, Kolkata 700126, West Bengal India
| | - Bertha Valle
- Department of Chemistry, Texas Southern University , Houston, Texas 77004, United States
| | - Robert M Strongin
- Department of Chemistry, Portland State University , Portland, Oregon 97207, United States
| | - Gabor Patonay
- Department of Chemistry, Georgia State University , Atlanta, Georgia 30302-4098, United States
| | - Herman O Sintim
- Department of Chemistry and Biochemistry, University of Maryland , College Park, Maryland 20742, United States
| | - Gary A Baker
- Department of Chemistry, University of Missouri Columbia , Columbia, Missouri 65211-7600, United States
| | - Aleeta Powe
- Department of Chemistry, University of Louisville , Louisville, Kentucky 40208, United States
| | - Mark Lowry
- Department of Chemistry, Portland State University , Portland, Oregon 97207, United States
| | - Jan O Karolin
- Institute of Fluorescence, University of Maryland Baltimore County , Baltimore, Maryland 21202, United States
| | - Chris D Geddes
- Institute of Fluorescence, University of Maryland Baltimore County , Baltimore, Maryland 21202, United States
| | - Isiah M Warner
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
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14
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Smail K, Tchouar N, Barj M, Marekha B, Idrissi A. Luteolin organic solvent interactions. A molecular dynamics simulation analysis. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.09.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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