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Bowen H, Durrani R, Delavault A, Durand E, Chenyu J, Yiyang L, Lili S, Jian S, Weiwei H, Fei G. Application of deep eutectic solvents in protein extraction and purification. Front Chem 2022; 10:912411. [PMID: 36147253 PMCID: PMC9485462 DOI: 10.3389/fchem.2022.912411] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/26/2022] [Indexed: 11/15/2022] Open
Abstract
Deep eutectic solvents (DESs) are a mixture of hydrogen bond donor (HBD) and hydrogen bond acceptor (HBA) molecules that can consist, respectively, of natural plant metabolites such as sugars, carboxylic acids, amino acids, and ionic molecules, which are for the vast majority ammonium salts. Media such as DESs are modular tools of sustainability that can be pointed toward the extraction of bioactive molecules due to their excellent physicochemical properties, their relatively low price, and accessibility. The present review focuses on the application of DESs for protein extraction and purification. The in-depth effects and principles that apply to DES-mediated extraction using various renewable biomasses will be discussed as well. One of the most important observations being made is that DESs have a clear ability to maintain the biological and/or functional activity of the extracted proteins, as well as increase their stability compared to traditional solvents. They demonstrate true potential for a reproducible but more importantly, scalable protein extraction and purification compared to traditional methods while enabling waste valorization in some particular cases.
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Affiliation(s)
- Hou Bowen
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, China
| | - Rabia Durrani
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an, Zhejiang, China
| | - André Delavault
- Technical Biology, Institute of Process Engineering in Life Sciences II, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Erwann Durand
- CIRAD, UMR QUALISUD, Montpellier, France
- Qualisud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, Université de la Réunion, Montpellier, France
| | - Jiang Chenyu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an, Zhejiang, China
| | - Long Yiyang
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, China
| | - Song Lili
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an, Zhejiang, China
| | - Song Jian
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, Zhejiang, China
| | - Huan Weiwei
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, Zhejiang, China
- *Correspondence: Gao Fei, ; Huan Weiwei,
| | - Gao Fei
- Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou, China
- *Correspondence: Gao Fei, ; Huan Weiwei,
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Li A, Zhai H, Li J, He Q. Practical Applications of Supramolecular Extraction with Macrocycles. CHEM LETT 2020. [DOI: 10.1246/cl.200409] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Aimin Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Huijuan Zhai
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Jilian Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Qing He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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4
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Yokoyama T, Mizuguchi M. Transthyretin Amyloidogenesis Inhibitors: From Discovery to Current Developments. J Med Chem 2020; 63:14228-14242. [DOI: 10.1021/acs.jmedchem.0c00934] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Takeshi Yokoyama
- Faculty of Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0914, Japan
| | - Mineyuki Mizuguchi
- Faculty of Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0914, Japan
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Soltanmohammadi F, Jouyban A, Shayanfar A. New aspects of deep eutectic solvents: extraction, pharmaceutical applications, as catalyst and gas capture. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01316-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Abstract
AbstractIon exchange is one of the promising methods for downstream processing in biotechnology. Its advantages are based on selectivity and therefore obtaining of products with reasonable concentration and purity, mild conditions, simple operation and saving of time and energy for product separation. Additional advantage is the possiblein situextraction of ionogenic products from the fermentation broth, including removal of potential inhibitors during the fermentation process.In the case of biotechnology, ion exchange could be considered in two separate ways: ion-exchange solvent extraction and traditional liquid/solid ion exchange by ion-exchange resins. Both approaches have been studied.In this paper, this approach is shown on two important case studies: L(+)-lactic acid and L-lysine recovery from fermentation processes.
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Affiliation(s)
- Venko N. Beschkov
- Institute of Chemical Engineering, Bulgarian Academy of Sciences, Sofia1113, Bulgaria
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7
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Guo X, Liu Z, Zheng Y, Li Y, Li L, Liu H, Chen Z, Wu L. Review on the Structures and Activities of Transthyretin Amyloidogenesis Inhibitors. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:1057-1081. [PMID: 32210536 PMCID: PMC7071892 DOI: 10.2147/dddt.s237252] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 02/24/2020] [Indexed: 12/26/2022]
Abstract
Transthyretin (TTR) is a tetrameric protein, and its dissociation, aggregation, deposition, and misfolding are linked to several human amyloid diseases. As the main transporter for thyroxine (T4) in plasma and cerebrospinal fluid, TTR contains two T4-binding sites, which are docked with T4 and subsequently maintain the structural stability of TTR homotetramer. Affected by genetic disorders and detrimental environmental factors, TTR degrades to monomer and/or form amyloid fibrils. Reasonably, stabilization of TTR might be an efficient strategy for the treatment of TTR-related amyloidosis. However, only 10-25% of T4 in the plasma is bound to TTR under physiological conditions. Expectedly, T4 analogs with different structures aiming to bind to T4 pockets may displace the functions of T4. So far, a number of compounds including both natural and synthetic origin have been reported. In this paper, we summarized the potent inhibitors, including bisaryl structure-based compounds, flavonoids, crown ethers, and carboranes, for treating TTR-related amyloid diseases and the combination modes of some compounds binding to TTR protein.
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Affiliation(s)
- Xiaohua Guo
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
| | - Zhaowen Liu
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
| | - Yizhou Zheng
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
| | - Yamei Li
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
| | - Linfu Li
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
| | - Hai Liu
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
| | - Zhixi Chen
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
| | - Longhuo Wu
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, People's Republic of China
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8
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Affiliation(s)
- Takeshi Yokoyama
- Faculty of Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0914, Japan
| | - Mineyuki Mizuguchi
- Faculty of Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0914, Japan
- Graduate School of Innovative Life Science, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
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9
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Aqueous biphasic systems formed by deep eutectic solvent and new-type salts for the high-performance extraction of pigments. Talanta 2018; 181:210-216. [DOI: 10.1016/j.talanta.2018.01.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 12/25/2017] [Accepted: 01/05/2018] [Indexed: 12/20/2022]
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10
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Pan W, Mao L, Shi M, Fu Y, Jiang X, Feng W, He Y, Xu D, Yuan L. The cytochrome c–cyclo[6]aramide complex as a supramolecular catalyst in methanol. NEW J CHEM 2018. [DOI: 10.1039/c7nj02741a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hydrogen-bonded aromatic amide macrocycle forms a host–guest complex with cytochrome c, which acts as a supramolecular catalyst for the oxidation of benzhydrol even at low temperatures.
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Affiliation(s)
- Wang Pan
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
| | - Lijun Mao
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
| | - Mingsong Shi
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
| | - Yonghong Fu
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
| | - Xiaomin Jiang
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
| | - Wen Feng
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
| | - Youzhou He
- Chongqing Key Laboratory of Catalysis & Functional Organic Molecules, College of Environment and Resources, Chongqing Technology and Business University
- Chongqing 400067
- China
| | - Dingguo Xu
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
| | - Lihua Yuan
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University
- Chengdu 610064
- China
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11
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Aqueous biphasic systems containing PEG-based deep eutectic solvents for high-performance partitioning of RNA. Talanta 2017; 170:266-274. [DOI: 10.1016/j.talanta.2017.04.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/01/2017] [Accepted: 04/09/2017] [Indexed: 11/20/2022]
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12
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Xu K, Wang Y, Ding X, Huang Y, Li N, Wen Q. Magnetic solid-phase extraction of protein with deep eutectic solvent immobilized magnetic graphene oxide nanoparticles. Talanta 2016; 148:153-62. [DOI: 10.1016/j.talanta.2015.10.079] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 10/22/2015] [Accepted: 10/26/2015] [Indexed: 10/22/2022]
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13
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Effect of sodium chloride on solute–solvent interactions in aqueous polyethylene glycol–sodium sulfate two-phase systems. J Chromatogr A 2015; 1425:51-61. [PMID: 26615710 DOI: 10.1016/j.chroma.2015.11.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 01/01/2023]
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14
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Vahidnia M, Pazuki G, Abdolrahimi S. Impact of polyethylene glycol as additive on the formation and extraction behavior of ionic-liquid based aqueous two-phase system. AIChE J 2015. [DOI: 10.1002/aic.15035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mohammad Vahidnia
- Chemical Engineering Dept.; Amirkabir University of Technology (Tehran Polytechnic); Tehran Iran
| | - Gholamreza Pazuki
- Chemical Engineering Dept.; Amirkabir University of Technology (Tehran Polytechnic); Tehran Iran
| | - Shiva Abdolrahimi
- Chemical Engineering Dept.; Amirkabir University of Technology (Tehran Polytechnic); Tehran Iran
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15
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Selective extraction of histidine derivatives by metal affinity with a copper(II)–chelating ligand complex in an aqueous two-phase system. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 990:73-9. [DOI: 10.1016/j.jchromb.2015.03.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 03/25/2015] [Accepted: 03/29/2015] [Indexed: 11/23/2022]
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16
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A green deep eutectic solvent-based aqueous two-phase system for protein extracting. Anal Chim Acta 2015; 864:9-20. [DOI: 10.1016/j.aca.2015.01.026] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/14/2015] [Accepted: 01/18/2015] [Indexed: 11/23/2022]
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17
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Li Y, Lu X, Luo Q, Xu Z, Wu J. Extraction and mechanistic investigation of trace dibutyl phthalate using an ionic liquid aqueous two-phase system. NEW J CHEM 2015. [DOI: 10.1039/c5nj00232j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ionic liquid aqueous two-phase system was applied to extract trace dibutyl phthalate from water samples together with the HPLC-UV method.
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Affiliation(s)
- Yuliang Li
- School of Environmental Science and Engineering
- Chang'an University
- Xi'an
- China
| | - Xiaojia Lu
- School of Environmental Science and Engineering
- Chang'an University
- Xi'an
- China
| | - Qinxin Luo
- School of Environmental Science and Engineering
- Chang'an University
- Xi'an
- China
| | - Zhongyu Xu
- School of Environmental Science and Engineering
- Chang'an University
- Xi'an
- China
| | - Jingfeng Wu
- School of Environmental Science and Engineering
- Chang'an University
- Xi'an
- China
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18
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Lee CC, Maestre-Reyna M, Hsu KC, Wang HC, Liu CI, Jeng WY, Lin LL, Wood R, Chou CC, Yang JM, Wang AHJ. Crowning proteins: modulating the protein surface properties using crown ethers. Angew Chem Int Ed Engl 2014; 53:13054-8. [PMID: 25287606 PMCID: PMC4288931 DOI: 10.1002/anie.201405664] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/16/2014] [Indexed: 11/18/2022]
Abstract
Crown ethers are small, cyclic polyethers that have found wide-spread use in phase-transfer catalysis and, to a certain degree, in protein chemistry. Crown ethers readily bind metallic and organic cations, including positively charged amino acid side chains. We elucidated the crystal structures of several protein-crown ether co-crystals grown in the presence of 18-crown-6. We then employed biophysical methods and molecular dynamics simulations to compare these complexes with the corresponding apoproteins and with similar complexes with ring-shaped low-molecular-weight polyethylene glycols. Our studies show that crown ethers can modify protein surface behavior dramatically by stabilizing either intra- or intermolecular interactions. Consequently, we propose that crown ethers can be used to modulate a wide variety of protein surface behaviors, such as oligomerization, domain–domain interactions, stabilization in organic solvents, and crystallization.
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Affiliation(s)
- Cheng-Chung Lee
- Institute of Biological Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 (Taiwan); Core Facilities for Protein Structural Analysis, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 (Taiwan)
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Lee CC, Maestre-Reyna M, Hsu KC, Wang HC, Liu CI, Jeng WY, Lin LL, Wood R, Chou CC, Yang JM, Wang AHJ. Crowning Proteins: Modulating the Protein Surface Properties using Crown Ethers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405664] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Phase equilibrium and chloramphenicol partitioning in aqueous two-phase system composed of 1-hydroxylhexyl-3-methylimidazolium chloride–salt. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2013.12.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Sattari M, Rounaghi GH, Deiminiat B, Mohajeri M. A complexation study of 15-crown-5 with Co2+ cation in some pure and mixed organic solvents. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363214030281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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22
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Li Y, Tan L, Li H, Xu Z, Zuo X, Tang Y. An artificial receptor fabricated by target recognition determinant imprinting for selective capture of α-amanitin. J Chromatogr A 2014; 1324:190-7. [DOI: 10.1016/j.chroma.2013.11.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 11/21/2013] [Accepted: 11/22/2013] [Indexed: 11/30/2022]
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23
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Kurnia KA, Freire MG, Coutinho JAP. Effect of Polyvalent Ions in the Formation of Ionic-Liquid-Based Aqueous Biphasic Systems. J Phys Chem B 2013; 118:297-308. [DOI: 10.1021/jp411933a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kiki A. Kurnia
- Departamento de Química,
CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Mara G. Freire
- Departamento de Química,
CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - João A. P. Coutinho
- Departamento de Química,
CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal
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24
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Chen Y, Rodgers MT. Structural and energetic effects in the molecular recognition of acetylated amino acids by 18-crown-6. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2012; 23:2020-2030. [PMID: 22926972 DOI: 10.1007/s13361-012-0466-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 07/25/2012] [Accepted: 07/31/2012] [Indexed: 06/01/2023]
Abstract
Absolute 18-crown-6 (18C6) binding affinities of four protonated acetylated amino acids (AcAAs) are determined using guided ion beam tandem mass spectrometry techniques. The AcAAs examined in this work include: N-terminal acetylated lysine (N(α)-AcLys), histidine (N(α)-AcHis), and arginine (N(α)-AcArg) as well as side chain acetylated lysine (N(ε)-AcLys). The kinetic-energy-dependent cross sections for collision-induced dissociation (CID) of the (AcAA)H(+)(18C6) complexes are analyzed using an empirical threshold law to extract absolute 0 and 298 K (AcAA)H(+)-18C6 bond dissociation energies (BDEs) after accounting for the effects of multiple collisions, kinetic and internal energy distributions of the reactants, and unimolecular dissociation lifetimes. Theoretical electronic structure calculations are performed to determine stable geometries and energetics for neutral and protonated 18C6 and the AcAAs as well as the proton bound complexes of these species, (AcAA)H(+)(18C6), at the B3LYP/6-311+G(2d,2p)//B3LYP/6-31 G* and M06/6-311+G(2d,2p)//B3LYP/6-31G* levels of theory. For all four (AcAA)H(+)(18C6) complexes, loss of neutral 18C6 corresponds to the most favorable dissociation pathway. At elevated energies, products arising from sequential dissociation of the primary CID product, H(+)(AcAA), are also observed. Protonated N(α)-AcLys exhibits a greater 18C6 binding affinity than other protonated N(α)-AcAAs, suggesting that the side chains of Lys residues are the preferred binding sites for 18C6 complexation to peptides and proteins. N(α)-AcLys exhibits a greater 18C6 binding affinity than N(ε)-AcLys, suggesting that binding of 18C6 to the side chain of Lys residues is more favorable than to the N-terminal amino group of Lys.
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Affiliation(s)
- Yu Chen
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
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25
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Conductance behavior of ionic liquids, 1-alkyl-3-methylimidazolium bromide, in aqueous d-xylose solutions. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.02.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Chen Y, Rodgers MT. Structural and Energetic Effects in the Molecular Recognition of Amino Acids by 18-Crown-6. J Am Chem Soc 2012; 134:5863-75. [DOI: 10.1021/ja211021h] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yu Chen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - M. T. Rodgers
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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27
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Oshima T, Muto H, Baba Y. Dominant structural factors for complexation and denaturation of proteins using carboxylic acid receptors. Anal Chim Acta 2012; 710:102-10. [PMID: 22123118 DOI: 10.1016/j.aca.2011.10.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 09/30/2011] [Accepted: 10/13/2011] [Indexed: 10/16/2022]
Abstract
Complexation accompanied by denaturation of protein with synthetic carboxylic acid receptors was investigated, to evaluate the key factors for recognition of proteins. The synthetic receptors used were tetraphenylporphyrin (TPP) derivatives and receptors bearing multiple (2-8) carboxylic acid groups. The complexation behavior was quantified from the absorption in the far UV CD spectrum attributed to the secondary structure of the protein. TPP derivatives bearing multiple carboxylic acid groups in the side chains exhibited higher affinity than other receptors that were smaller and had fewer carboxylic acid groups. As the degree of complexation was influenced by the pH and ionic strength in aqueous solution, electrostatic interaction was one of the most important factors for the recognition of proteins. Complexation was also estimated by observation of fluorescence quenching of the TPP derivatives. The stoichiometry of the complexes between lysozyme and the porphyrins was investigated by quantitative analysis of the denaturation using CD spectra. From the results of Job plots and slope analysis for the amount of denatured protein, formation of 1:1 complexes was confirmed. The equilibrium association constants (K(ass)) for lysozyme and the TPP receptors ranged from 0.6×10(6) to 1.1×10(6)M(-1). The lytic activity of lysozyme was partially lost in the presence of anionic TPP derivatives, due to complexation and denaturation.
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Affiliation(s)
- Tatsuya Oshima
- Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Nishi, Miyazaki, Japan.
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28
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Oshima T, Baba Y. Recognition of exterior protein surfaces using artificial ligands based on calixarenes, crown ethers, and tetraphenylporphyrins. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-0088-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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29
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Complexation study of dibenzo-18-crown-6 with UO2 2+ cation in binary mixed non-aqueous solutions. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-0053-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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