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Trefulka M, Ostatná V. Mixing nitrogenous ligands in osmium(VI)ligand-polysaccharide complexes. Voltammetric sensing. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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2
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Adsorption/desorption behavior of hyaluronic acid fragments at charged hydrophobic surface. Carbohydr Polym 2022; 277:118831. [PMID: 34893248 DOI: 10.1016/j.carbpol.2021.118831] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 12/11/2022]
Abstract
This work reveals the growing potential of novel electrochemical methods that are applicable for polysaccharides. It was shown for the first time that the molecules of hyaluronic acid (HA) exhibit electrochemical response using phase-sensitive alternating current (AC) voltammetry in phase-out mode. Adsorption and desorption processes of HA fragments at a charged interface of mercury electrode were observed in buffered HA solutions. Electrostatic and hydrophobic manners of interactions were distinguished for native hyaluronan fragments in a wide electric potential range. The AC voltammetry response depended on the temperature, concentration, and length of HA chains. Results of this work open possibilities for further structural characterization of widely used HA fragments and understanding manners of interactions with charged hydrophobic surfaces that could be useful in the future for understanding HA interactions at biological levels.
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3
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Moulaee K, Neri G. Electrochemical Amino Acid Sensing: A Review on Challenges and Achievements. BIOSENSORS 2021; 11:502. [PMID: 34940259 PMCID: PMC8699811 DOI: 10.3390/bios11120502] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/18/2021] [Accepted: 11/25/2021] [Indexed: 05/05/2023]
Abstract
The rapid growth of research in electrochemistry in the last decade has resulted in a significant advancement in exploiting electrochemical strategies for assessing biological substances. Among these, amino acids are of utmost interest due to their key role in human health. Indeed, an unbalanced amino acid level is the origin of several metabolic and genetic diseases, which has led to a great need for effective and reliable evaluation methods. This review is an effort to summarize and present both challenges and achievements in electrochemical amino acid sensing from the last decade (from 2010 onwards) to show where limitations and advantages stem from. In this review, we place special emphasis on five well-known electroactive amino acids, namely cysteine, tyrosine, tryptophan, methionine and histidine. The recent research and achievements in this area and significant performance metrics of the proposed electrochemical sensors, including the limit of detection, sensitivity, stability, linear dynamic range(s) and applicability in real sample analysis, are summarized and presented in separate sections. More than 400 recent scientific studies were included in this review to portray a rich set of ideas and exemplify the capabilities of the electrochemical strategies to detect these essential biomolecules at trace and even ultra-trace levels. Finally, we discuss, in the last section, the remaining issues and the opportunities to push the boundaries of our knowledge in amino acid electrochemistry even further.
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Affiliation(s)
- Kaveh Moulaee
- Department of Engineering, University of Messina, C.Da Di Dio, I-98166 Messina, Italy;
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran 16846-13114, Iran
| | - Giovanni Neri
- Department of Engineering, University of Messina, C.Da Di Dio, I-98166 Messina, Italy;
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Electrochemistry of chitosan amino-glycan and BSA protein mixture under seawater conditions. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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5
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Yan Z, He M, Zhang Y, Hu G, Li H. Methylene blue-enhanced electrochemical oxidation of tyrosine residues in native/denatured bovine serum albumin and HIV-1 Tat peptide. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Trefulka M, Černocká H, Havran L, Hasoň S, Fojt L, Ostatná V. Voltammetric sensing of glycans modified by osmium(VI)ligand complexes. The influence of N-acetyl neuraminic acid. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Špaček J, Fojta M. Electroanalysis of unnatural base pair content in plasmid DNA generated in a semi-synthetic organism. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Trefulka M, Ostatná V. Cyclic and square wave voltammetry of chitooligosaccharides modified by osmium(VI) tetramethylethylenediamine. Bioelectrochemistry 2020; 133:107494. [PMID: 32120319 DOI: 10.1016/j.bioelechem.2020.107494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 02/22/2020] [Indexed: 11/18/2022]
Abstract
Compounds containing vicinal diol (glycol) groups, including saccharides, could be modified with sixvalent osmium complexes with nitrogenous ligands, particularly with N,N,N',N'-tetramethylethylenediamine (Os(VI)tem). The modification products are electrochemically active. Here we show that aminosaccharides can also be modified by Os(VI)tem. We studied chitosan oligosaccharides in their acetylated and deacetylated form in 0.2 M Na-phosphate, pH 6.9. Deacetylated chitosan oligosaccharides with free amino groups modified by Os(VI)tem yielded two peaks (peak I' at -0.15 V and peak II' at about -0.38 V) despite the fact that these oligomers contain only one glycol group on the non-reducing end of the molecule. The electrochemical behavior of Os(VI)tem modified deacetylated chitosan oligomers differs from Os(VI)tem modified simple saccharides, containing only glycol groups, predominantly in peak I'. Our results suggest that free amino groups are involved in Os(VI)tem modification of chitosan oligomers.
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Affiliation(s)
- Mojmír Trefulka
- Institute of Biophysics, The Czech Academy of Sciences, Královopolská 135, 61265 Brno, Czech Republic
| | - Veronika Ostatná
- Institute of Biophysics, The Czech Academy of Sciences, Královopolská 135, 61265 Brno, Czech Republic.
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9
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Římánková L, Hasoň S, Daňhel A, Fojta M, Ostatná V. Catalytic and redox activity of nucleic acids at mercury electrodes: Roles of nucleobase residues. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Distinguishing the glycan isomers 2,3-sialyllactose and 2,6-sialyllactose by voltammetry after modification with osmium(VI) complexes. Anal Chim Acta 2019; 1067:56-62. [PMID: 31047149 DOI: 10.1016/j.aca.2019.03.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/19/2019] [Accepted: 03/28/2019] [Indexed: 11/22/2022]
Abstract
Altered glycosylation is a universal feature of cancer cells and certain glycans are well-known markers of tumor progression. In this work we studied two glycan isomers, 2,3-sialyllactose (3-SL) and 2,6-sialyllactose (6-SL), frequently appearing in glycoproteins connected with cancer. A combination of square wave voltammetry and glycan modification with osmium(VI) N,N,N',N'-tetramethylethylenediamine (Os(VI)tem) allowed to distinguish between these regioisomers, since the 6-SL molecule can bind three Os(VI), while the 3-SL only two Os(VI) moieties, as experiments using capillary electrophoresis, inductively coupled plasma mass spectrometry and thin layer chromatography showed. A similar pattern of Os(VI)-modification was found for isomers of sialyl-N-acetyllactosamine and sialylgalactose. Covalent adducts of Os(VI)tem with glycans yielded three reduction voltammetric peaks. The ratio of peak I/peak II heights depends on the content of individual regioisomer in the sample. Our proposed approach allows the determination of isomer percentage representation in the mixture after one voltammogram recording. These results show a new appropriate method for the discrimination of glycan isomers containing terminal sialic acid important for distinguishing between cancerous and non-cancerous origin of biomarkers.
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Kroutil O, Kabeláč M, Dorčák V, Vacek J. Structures of Peptidic H‐wires at Mercury Surface: Molecular Dynamics Study. ELECTROANAL 2019. [DOI: 10.1002/elan.201900314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Ondřej Kroutil
- Institute of Physics and Biophysics, Faculty of ScienceUniversity of South Bohemia Branisovska 1760 370 05 Ceske Budejovice Czech Republic
| | - Martin Kabeláč
- Department of Chemistry, Faculty of ScienceUniversity of South Bohemia Branisovska 31 370 05 Ceske Budejovice Czech Republic
| | - Vlastimil Dorčák
- Institute of Biophysics of the CAS Kralovopolska 135 612 65 Brno Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and DentistryPalacky University Hnevotinska 3 775 15 Olomouc Czech Republic
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Danhel A, Ligmajer F, Sikola T, Walcarius A, Fojta M. Electrodeposition of silver amalgam particles on ITO – Towards novel electrode material. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.12.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Paleček E, Heyrovský M, Dorčák V. J. Heyrovský's Oscillographic Polarography. Roots of Present Chronopotentiometric Analysis of Biomacromolecules. ELECTROANAL 2018. [DOI: 10.1002/elan.201800109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Emil Paleček
- Institute of Biophysics of the CAS; Královopolská 135 612 65 Brno Czech Republic
| | - Michael Heyrovský
- J. Heyrovský Institute of Physical Chemistry of the CAS; Dolejškova 2155/3 182 23 Prague 8 Czech Republic
| | - Vlastimil Dorčák
- Institute of Biophysics of the CAS; Královopolská 135 612 65 Brno Czech Republic
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Novak D, Viskupicova J, Zatloukalova M, Heger V, Michalikova S, Majekova M, Vacek J. Electrochemical behavior of sarco/endoplasmic reticulum Ca-ATPase in response to carbonylation processes. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.01.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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15
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Strmečki S, Paleček E. Adsorption/desorption of biomacromolecules involved in catalytic hydrogen evolution. Bioelectrochemistry 2017; 120:87-93. [PMID: 29197257 DOI: 10.1016/j.bioelechem.2017.11.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 11/23/2017] [Accepted: 11/25/2017] [Indexed: 11/19/2022]
Abstract
Previously, it has been shown that proteins and some polysaccharides (PSs) catalyse hydrogen evolution, producing electrochemical signals on mercury electrodes. The catalytic hydrogen evolution reaction (CHER) of the above-mentioned biomacromolecules was studied by voltammetric and chronopotentiometric stripping (CPS) methods. To obtain more information about electrode processes involving CHER, here we used protein such as BSA, and chitosan as a PS; in addition, we investigated dextran as a control PS not involved in CHER. We studied biomacromolecules by phase-sensitive alternating current (AC) voltammetry. Using phase-in AC voltammetry, for CHER-involved biomacromolecules we observed a CHER peak at highly negative potentials, similar to that observed with other voltammetric and CPS methods. On the other hand, by means of the adsorption/desorption processes studied in phase-out AC voltammetry, we uncovered a sharp and narrow decrease of capacitive current in the potential range of the CHER peak, denominated as the tensammetric minimum. This minimum was closely related to the CHER peak, as demonstrated by similar dependences on specific conditions affecting the CHER peak such as buffer capacity and pH. A tensammetric minimum was not observed for dextran. Our results suggest specific organization of biopolymer layers at negative potentials observed only in biomacromolecules involved in CHER.
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Affiliation(s)
- Slađana Strmečki
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Bijenička 54, 10 000 Zagreb, Croatia.
| | - Emil Paleček
- Institute of Biophysics, Academy of the Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
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Strmečki S, Trefulka M, Zatloukalová P, Durech M, Vojtesek B, Paleček E. Immunoassays of chemically modified polysaccharides, glycans in glycoproteins and ribose in nucleic acids. Anal Chim Acta 2016; 955:108-115. [PMID: 28088277 DOI: 10.1016/j.aca.2016.12.013] [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: 08/19/2016] [Revised: 12/08/2016] [Accepted: 12/16/2016] [Indexed: 01/23/2023]
Abstract
Glycosylation of proteins plays an important role in health and diseases. At present new simple and inexpensive methods of glycoprotein analysis are sought. We developed a monoclonal antibody Manost 2.1 in mice after immunization with the adduct of mannan with Os(VI)temed complex (temed is N,N,N',N'-tetramethylethylenediamine). The specificity of this antibody to different biomolecules treated with Os(VI)temed was tested using dot blot immunoassay. Manost 2.1 showed specificity toward Os(VI)temed-modified polysaccharides, glycoproteins and ribonucleotide at the 3'-end in DNA. The antibody recognized neither the unmodified compounds nor the non-glycosylated proteins treated with Os(VI)temed. We also performed western blotting and Coomassie silver blue staining of mixtures of biomacromolecules treated with Os(VI)temed and identified specifically the modified glycoproteins. The immunochemical method using Manost 2.1 was compared with electrochemical analyses based on redox signals of the Os(VI)temed adducts, with similar results in terms of sensitivity. This new antibody-based approach opens the door for rapid and inexpensive analysis of glycans and glycoproteins in various scientific and medical fields, including cancer research and the future application of glycoprotein detection in clinical practice.
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Affiliation(s)
- Slađana Strmečki
- Institute of Biophysics, Academy of the Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czechia
| | - Mojmír Trefulka
- Institute of Biophysics, Academy of the Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czechia
| | - Pavlína Zatloukalová
- Masaryk Memorial Cancer Institute, Regional Centre for Applied Molecular Oncology, Žluty kopec 7, 656 53 Brno, Czechia
| | - Michal Durech
- Masaryk Memorial Cancer Institute, Regional Centre for Applied Molecular Oncology, Žluty kopec 7, 656 53 Brno, Czechia
| | - Borivoj Vojtesek
- Masaryk Memorial Cancer Institute, Regional Centre for Applied Molecular Oncology, Žluty kopec 7, 656 53 Brno, Czechia
| | - Emil Paleček
- Institute of Biophysics, Academy of the Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czechia; Masaryk Memorial Cancer Institute, Regional Centre for Applied Molecular Oncology, Žluty kopec 7, 656 53 Brno, Czechia.
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Joda H, Sedova A, Awan W, Flechsig GU. The Osmium Tetroxide Bipyridine-labeled DNA Probe: Hairpin Conformations and Characterization of Redox-label Behavior. ELECTROANAL 2016. [DOI: 10.1002/elan.201600523] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hamdi Joda
- University at Albany; State University of New York; 1400 Washington Ave. Albany NY 12222 US
- Current affiliation: Department of Biochemistry and Molecular Biology; Miller School of Medicine; University of Miami; 1011 NW 15th Street Miami FL 33136 US
| | - Ada Sedova
- University at Albany; State University of New York; 1400 Washington Ave. Albany NY 12222 US
- Current affiliation: Scientific Computing Group; National Center for Computational Sciences; Oak Ridge National Laboratory; 1 Bethel Valley Rd. Oak Ridge TN 37831 US
| | - Waqas Awan
- University at Albany; State University of New York; 1400 Washington Ave. Albany NY 12222 US
| | - Gerd-Uwe Flechsig
- University at Albany; State University of New York; 1400 Washington Ave. Albany NY 12222 US
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Ozkan SA, Uslu B. From mercury to nanosensors: Past, present and the future perspective of electrochemistry in pharmaceutical and biomedical analysis. J Pharm Biomed Anal 2016; 130:126-140. [PMID: 27210510 DOI: 10.1016/j.jpba.2016.05.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 05/02/2016] [Accepted: 05/03/2016] [Indexed: 02/07/2023]
Abstract
Polarography was the first developed automated method of voltage-controlled electrolysis with dropping mercury electrode (DME). Then, hanging mercury drop and static mercury drop electrodes were added as an alternative indicator electrode. In this way, polarography turned formally into voltammetry with mercury electrodes in the electroreduction way. Solid electrodes such as noble metal and carbon based electrodes can be used for the investigation of the compounds for both oxidation and reduction directions, which is called voltammetry. The voltammetric and polarographic techniques are more sensitive, reproducible, and easily used electroanalytical methods that can be alternative to more frequently used separation and spectrometric methods. Furthermore, in some cases there is a relationship between voltammetry and pharmaceutical samples, and the knowledge of the mechanism of their electrode reactions can give a useful clue in elucidation of the mechanism of their interaction with living cells. The voltammetric and polarographic analysis of drugs in pharmaceutical preparations are by far the most common use of electrochemistry for analytical pharmaceutical problems. Recent trends and challenges in the electrochemical methods for the detection of DNA hybridization and pathogens are available. Low cost, small sample requirement and possibility of miniaturization justifies their increasing development.
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Affiliation(s)
- Sibel A Ozkan
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06100 Ankara, Turkey.
| | - Bengi Uslu
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06100 Ankara, Turkey
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Fast-scan cyclic voltammetry with thiol-modified mercury electrodes distinguishes native from denatured BSA. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.10.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Abstract
Saenger sequencing has led the advances in molecular biology, while faster and cheaper next generation technologies are urgently needed. A newer approach exploits nanopores, natural or solid-state, set in an electrical field, and obtains base sequence information from current variations due to the passage of a ssDNA molecule through the pore. A hurdle in this approach is the fact that the four bases are chemically comparable to each other which leads to small differences in current obstruction. 'Base calling' becomes even more challenging because most nanopores sense a short sequence and not individual bases. Perhaps sequencing DNA via nanopores would be more manageable, if only the bases were two, and chemically very different from each other; a sequence of 1s and 0s comes to mind. Osmylated DNA comes close to such a sequence of 1s and 0s. Osmylation is the addition of osmium tetroxide bipyridine across the C5-C6 double bond of the pyrimidines. Osmylation adds almost 400% mass to the reactive base, creates a sterically and electronically notably different molecule, labeled 1, compared to the unreactive purines, labeled 0. If osmylated DNA were successfully sequenced, the result would be a sequence of osmylated pyrimidines (1), and purines (0), and not of the actual nucleobases. To solve this problem we studied the osmylation reaction with short oligos and with M13mp18, a long ssDNA, developed a UV-vis assay to measure extent of osmylation, and designed two protocols. Protocol A uses mild conditions and yields osmylated thymidines (1), while leaving the other three bases (0) practically intact. Protocol B uses harsher conditions and effectively osmylates both pyrimidines, but not the purines. Applying these two protocols also to the complementary of the target polynucleotide yields a total of four osmylated strands that collectively could define the actual base sequence of the target DNA.
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Paleček E, Tkáč J, Bartošík M, Bertók T, Ostatná V, Paleček J. Electrochemistry of nonconjugated proteins and glycoproteins. Toward sensors for biomedicine and glycomics. Chem Rev 2015; 115:2045-108. [PMID: 25659975 PMCID: PMC4360380 DOI: 10.1021/cr500279h] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Indexed: 02/07/2023]
Affiliation(s)
- Emil Paleček
- Institute
of Biophysics Academy of Science of the Czech Republic, v.v.i., Královopolská
135, 612 65 Brno, Czech Republic
| | - Jan Tkáč
- Institute
of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
| | - Martin Bartošík
- Regional
Centre for Applied Molecular Oncology, Masaryk
Memorial Cancer Institute, Žlutý kopec 7, 656 53 Brno, Czech Republic
| | - Tomáš Bertók
- Institute
of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
| | - Veronika Ostatná
- Institute
of Biophysics Academy of Science of the Czech Republic, v.v.i., Královopolská
135, 612 65 Brno, Czech Republic
| | - Jan Paleček
- Central
European Institute of Technology, Masaryk
University, Kamenice
5, 625 00 Brno, Czech Republic
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Dorčák V, Vargová V, Ostatná V, Paleček E. Lysine, Arginine, and Histidine Residues in Peptide-Catalyzed Hydrogen Evolution at Mercury Electrodes. ELECTROANAL 2015. [DOI: 10.1002/elan.201400644] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Bowater RP, Cobb AM, Pivonkova H, Havran L, Fojta M. Biophysical and electrochemical studies of protein–nucleic acid interactions. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-014-1405-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Jang SK, Jang JR, Choe WS, Lee S. Harnessing denatured protein for controllable bipolar doping of a monolayer graphene. ACS APPLIED MATERIALS & INTERFACES 2015; 7:1250-1256. [PMID: 25546483 DOI: 10.1021/am507246v] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, we demonstrated tunable p- and/or n-type doping of chemical vapor deposition-grown graphene with the use of protein bovine serum albumin (BSA) as a dopant. BSA undergoes protonation or deprotonation reaction subject to solution pH, thereby acting as either an electron donor or an electron acceptor on the graphene surface layered with denatured BSA through π-stacking interaction. This direct annealing of graphene with denatured BSA of amphoteric nature rendered facilitated fabrication of a p- and/or n-type graphene transistor by modulating pH-dependent net charges of the single dopant. Following AFM confirmation of the BSA/graphene interface assembly, the carrier transport properties of BSA-doped graphene transistors were assessed by I-V measurement and Raman spectra to show effective charge modulation of the graphene enabled by BSA doping at various pH conditions. The protein-mediated bipolar doping of graphene demonstrated in our work is simple, scalable, and straightforward; the proposed scheme is therefore expected to provide a useful alternative for fabricating graphene transistors of novel properties and promote their implementation in practice.
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Affiliation(s)
- Sung Kyu Jang
- SKKU Advanced Institute of Nanotechnology (SAINT), §School of Chemical Engineering, and ∥College of Information and Communication Engineering, Sungkyunkwan University (SKKU) , Suwon 440-746, Korea
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Havlikova M, Zatloukalova M, Ulrichova J, Dobes P, Vacek J. Electrocatalytic assay for monitoring methylglyoxal-mediated protein glycation. Anal Chem 2015; 87:1757-63. [PMID: 25539570 DOI: 10.1021/ac503705d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Protein glycation is a complex process that plays an important role in diabetes mellitus, aging, and the regulation of protein function in general. As a result, current methodological research on proteins is focused on the development of novel approaches for investigating glycation and the possibility of monitoring its modulation and selective inhibition. In this paper, a first sensing strategy for protein glycation is proposed, based on protein electroactivity measurement. Concretely, the label-free method proposed is based on the application of a constant-current chronopotentiometric stripping (CPS) analysis at Hg-containing electrodes. The glycation process was monitored as the decrease in the electrocatalytic protein signal, peak H, observed at highly negative potentials at around -1.8 V (vs Ag/AgCl3 M KCl), which was previously ascribed to a catalytic hydrogen evolution reaction (CHER). Using this method, a model protein bovine serum albumin was investigated over 3 days of incubation with the glycation agent methylglyoxal in the absence or presence of the glycation inhibitor aminoguanidine (pimagedine). The electrochemical methodology presented here could open up new possibilities in research on protein glycation and oxidative modification. The methodology developed also provides a new option for the analysis of protein intermolecular interactions using electrochemical sensors, which was demonstrated by the application of a silver solid amalgam electrode (AgSAE) for monitoring the glycation process in samples of bovine serum albumin, human serum albumin, and lysozyme.
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Affiliation(s)
- Marika Havlikova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University , Hnevotinska 3, 775 15 Olomouc, Czech Republic
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Riman D, Bartosova Z, Halouzka V, Vacek J, Jirovsky D, Hrbac J. Facile preparation of nanostructured copper-coated carbon microelectrodes for amperometric sensing of carbohydrates. RSC Adv 2015. [DOI: 10.1039/c5ra00831j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
We report a novel method for fabricating nanostructured copper-coated carbon cylindrical fiber microelectrodes with high efficiency in carbohydrate non-enzymatic and label-free amperometric sensing in batch and flow-detection arrangements.
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Affiliation(s)
- D. Riman
- Department of Analytical Chemistry
- Palacky University
- Faculty of Science
- CZ-771 46 Olomouc
- Czech Republic
| | - Z. Bartosova
- Department of Analytical Chemistry
- Palacky University
- Faculty of Science
- CZ-771 46 Olomouc
- Czech Republic
| | - V. Halouzka
- Department of Physics and Materials Engineering
- Faculty of Technology
- Tomas Bata University in Zlin
- 76001 Zlin
- Czech Republic
| | - J. Vacek
- Department of Medical Chemistry and Biochemistry
- Faculty of Medicine and Dentistry
- Palacky University
- 775 15 Olomouc
- Czech Republic
| | - D. Jirovsky
- Department of Analytical Chemistry
- Palacky University
- Faculty of Science
- CZ-771 46 Olomouc
- Czech Republic
| | - J. Hrbac
- Department of Chemistry
- Masaryk University
- Brno 625 00
- Czech Republic
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27
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Nabid MR, Bide Y, Habibi Z. Synthesis of a yolk/shell Fe3O4@poly(ionic liquid)s-derived nitrogen doped graphitic porous carbon materials and its application as support for nickel catalysts. RSC Adv 2015. [DOI: 10.1039/c4ra10374b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of yolk/shell spheres including a movable magnetic core, a poly(ionic liquid)s-derived porous carbon shell, and nickel nanoparticles confined within the porous shell is reported.
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Affiliation(s)
- Mohammad Reza Nabid
- Faculty of Chemistry
- Department of Polymer
- Shahid Beheshti University
- Tehran
- Iran
| | - Yasamin Bide
- Faculty of Chemistry
- Department of Polymer
- Shahid Beheshti University
- Tehran
- Iran
| | - Zahra Habibi
- Faculty of Chemistry
- Department of Polymer
- Shahid Beheshti University
- Tehran
- Iran
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28
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Trefulka M, Paleček E. Direct chemical modification and voltammetric detection of glycans in glycoproteins. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.08.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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29
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Paleček E, Římánková L. Chitosan catalyzes hydrogen evolution at mercury electrodes. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.04.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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30
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Večerková R, Hernychová L, Dobeš P, Vrba J, Josypčuk B, Bartošík M, Vacek J. Investigation of protein FTT1103 electroactivity using carbon and mercury electrodes. Surface-inhibition approach for disulfide oxidoreductases using silver amalgam powder. Anal Chim Acta 2014; 830:23-31. [PMID: 24856508 DOI: 10.1016/j.aca.2014.04.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 04/22/2014] [Accepted: 04/28/2014] [Indexed: 10/25/2022]
Abstract
Recently, it was shown that electrochemical methods can be used for analysis of poorly water-soluble proteins and for study of their structural changes and intermolecular (protein-ligand) interactions. In this study, we focused on complex electrochemical investigation of recombinant protein FTT1103, a disulfide oxidoreductase with structural similarity to well described DsbA proteins. This thioredoxin-like periplasmic lipoprotein plays an important role in virulence of bacteria Francisella tularensis. For electrochemical analyses, adsorptive transfer (ex situ) square-wave voltammetry with pyrolytic graphite electrode, and alternating-current voltammetry and constant-current chronopotentiometric stripping analysis with mercury electrodes, including silver solid amalgam electrode (AgSAE) were used. AgSAE was used in poorly water-soluble protein analysis for the first time. In addition to basic redox, electrocatalytic and adsorption/desorption characterization of FTT1103, electrochemical methods were also used for sensitive determination of the protein at nanomolar level and study of its interaction with surface of AgSA microparticles. Proposed electrochemical protocol and AgSA surface-inhibition approach presented here could be used in future for biochemical studies focused on proteins associated with membranes as well as on those with disulfide oxidoreductase activity.
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Affiliation(s)
- Renata Večerková
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hnevotinska 3, Olomouc 775 15, Czech Republic
| | - Lenka Hernychová
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Zluty kopec 7, Brno 656 53, Czech Republic
| | - Petr Dobeš
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Zluty kopec 7, Brno 656 53, Czech Republic
| | - Jiří Vrba
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hnevotinska 3, Olomouc 775 15, Czech Republic
| | - Bohdan Josypčuk
- J. Heyrovský Institute of Physical Chemistry of AS CR, v.v.i., Department of Biomimetic Electrochemistry, Dolejskova 3, Prague 182 23, Czech Republic
| | - Martin Bartošík
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Zluty kopec 7, Brno 656 53, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hnevotinska 3, Olomouc 775 15, Czech Republic.
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31
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Paleček E, Černocká H, Ostatná V, Navrátilová L, Brázdová M. Electrochemical sensing of tumor suppressor protein p53–deoxyribonucleic acid complex stability at an electrified interface. Anal Chim Acta 2014; 828:1-8. [DOI: 10.1016/j.aca.2014.03.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 03/21/2014] [Accepted: 03/24/2014] [Indexed: 10/25/2022]
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32
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Vacek J, Vrba J, Zatloukalová M, Kubala M. Electrochemical oxidation of proteins using ionic liquids as solubilizers, adsorption solvents and electrolytes. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.06.115] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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33
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Strmečki S, Plavšić M. An ex situ electrocatalytic analysis of κ-, ι-, and λ-carrageenan on mercury electrode in seawater. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2013.10.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Kurzątkowska K, Ostatná V, Hamley IW, Doneux T, Paleček E. Electrochemical sensing of 2D condensation in amyloid peptides. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.05.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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35
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Vargová V, Zivanović M, Dorčák V, Paleček E, Ostatná V. Catalysis of Hydrogen Evolution by Polylysine, Polyarginine and Polyhistidine at Mercury Electrodes. ELECTROANAL 2013. [DOI: 10.1002/elan.201300170] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Trefulka M, Paleček E. Modification of Poly- and Oligosaccharides with Os(VI)pyridine. Voltammetry of the Os(VI) Adducts Obtained by Ligand Exchange. ELECTROANAL 2013. [DOI: 10.1002/elan.201300191] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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37
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Černocká H, Ostatná V, Paleček E. Enzymatic activity and catalytic hydrogen evolution in reduced and oxidized urease at mercury surfaces. Anal Chim Acta 2013; 789:41-6. [DOI: 10.1016/j.aca.2013.06.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 06/08/2013] [Accepted: 06/16/2013] [Indexed: 10/26/2022]
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38
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Vacek J, Zatloukalova M, Havlikova M, Ulrichova J, Kubala M. Changes in the intrinsic electrocatalytic nature of Na+/K+ ATPase reflect structural changes on ATP-binding: Electrochemical label-free approach. Electrochem commun 2013. [DOI: 10.1016/j.elecom.2012.11.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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39
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Somji M, Dounin V, Muench SB, Schulze H, Bachmann TT, Kerman K. Electroanalysis of amino acid substitutions in bioengineered acetylcholinesterase. Bioelectrochemistry 2012; 88:110-3. [DOI: 10.1016/j.bioelechem.2012.07.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Revised: 07/01/2012] [Accepted: 07/13/2012] [Indexed: 10/28/2022]
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40
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Trefulka M, Paleček E. Voltammetric determination of Os(VI)-modified oligosaccharides at nanomolar level. Bioelectrochemistry 2012; 88:8-14. [DOI: 10.1016/j.bioelechem.2012.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 04/24/2012] [Accepted: 04/24/2012] [Indexed: 01/05/2023]
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41
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Toh RJ, Bonanni A, Pumera M. Oxidation of DNA bases is influenced by their position in the DNA strand. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2012.06.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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42
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Affiliation(s)
- Emil Paleček
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612
65 Brno, Czech Republic
| | - Martin Bartošík
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612
65 Brno, Czech Republic
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