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Havran L, Vacek J, Dorčák V. Free and Bound Histidine in Reactions at Mercury Electrode. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dorčák V, Černocká H, Paleček E. Bovine Serum Albumin Catalysed Hydrogen and Deuterium Evolution at Mercury Electrodes. Chempluschem 2020; 85:1596-1601. [PMID: 33210475 DOI: 10.1002/cplu.202000348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/04/2020] [Indexed: 11/09/2022]
Abstract
The hydrogen evolution reaction (HER), catalysed by proteins at mercury electrodes and reflected in chronopotentiometric stripping peak H, provides a label-free and reagentless analytical technique that is sensitive to protein structure. Here we show how the kinetic isotope effect affected the HER catalysed by the protein bovine serum albumin (BSA). We found that the deuteron bond, which is stronger than that of a proton, contributed to less effective transport of deuterons mediated by BSA at the Hg|D2 O interface, and enhanced structural stability of the surface-attached native BSA in D2 O solution. A structural transition was also observed in the surface-attached urea-denatured BSA, and is probably due to the destabilisation of some secondary structural remnants retained by the 17 SS-bonds. Because the catalytically active groups involved in proton or deuteron transfer in native proteins are often exposed towards solutions and their protons exchange almost instantly, no signs of H/D exchange were observed in native BSA using peak H under the given conditions.
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Affiliation(s)
- Vlastimil Dorčák
- Department of Biophysical Chemistry and Molecular Oncology, Institute of Biophysics of the Czech Academy of Sciences, v.v.i., Kralovopolska 135, 612 65, Brno, Czech Republic
| | - Hana Černocká
- Department of Biophysical Chemistry and Molecular Oncology, Institute of Biophysics of the Czech Academy of Sciences, v.v.i., Kralovopolska 135, 612 65, Brno, Czech Republic
| | - Emil Paleček
- Department of Biophysical Chemistry and Molecular Oncology, Institute of Biophysics of the Czech Academy of Sciences, v.v.i., Kralovopolska 135, 612 65, Brno, Czech Republic
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Šestáková I, Navrátil T, Josypčuk B. Metal Exchange Reactions in Metallothioneins Explored by Electrochemical Methods. ELECTROANAL 2019. [DOI: 10.1002/elan.201900276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ivana Šestáková
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3 182 23 Prague 8 Czech Republic
| | - Tomáš Navrátil
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3 182 23 Prague 8 Czech Republic
| | - Bohdan Josypčuk
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3 182 23 Prague 8 Czech Republic
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Černocká H, Izadi N, Ostatná V, Strmečki S. BSA‐Polysaccharide Interactions at Negatively Charged Electrode Surface. Effects of Current Density. ELECTROANAL 2019. [DOI: 10.1002/elan.201900231] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hana Černocká
- Institute of BiophysicsAcademy of the Sciences of the Czech Republic v.v.i., Kralovopolska 135 612 65 Brno Czech Republic
| | - Nasim Izadi
- Institute of BiophysicsAcademy of the Sciences of the Czech Republic v.v.i., Kralovopolska 135 612 65 Brno Czech Republic
- Department of Experimental Biology, Faculty of ScienceMasaryk University Kotlarska 2 611 37 Brno Czech Republic
| | - Veronika Ostatná
- Institute of BiophysicsAcademy of the Sciences of the Czech Republic v.v.i., Kralovopolska 135 612 65 Brno Czech Republic
| | - Slađana Strmečki
- Institute of BiophysicsAcademy of the Sciences of the Czech Republic v.v.i., Kralovopolska 135 612 65 Brno Czech Republic
- Ruđer Bošković InstituteDivision for Marine and Environmental Research Bijenička 54 10 000 Zagreb Croatia
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Melníková E, Izadi N, Gál M, Ostatná V. Chronopotentiometric Analysis of Proteins at Charged Electrode Surfaces. ELECTROANAL 2019. [DOI: 10.1002/elan.201900239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eva Melníková
- Slovak University of Technology, Faculty of Chemical and Food TechnologyDepartment of Inorganic Technology Radlinského 9 812 37 Bratislava Slovakia
| | - Nasim Izadi
- Institute of Biophysics of the Czech Academy of Sciences Královopolská 135 61265 Brno Czech Republic
- Department of Experimental Biology, Faculty of ScienceMasaryk University Kotlářská 2 61137 Brno Czech Republic
| | - Miroslav Gál
- Slovak University of Technology, Faculty of Chemical and Food TechnologyDepartment of Inorganic Technology Radlinského 9 812 37 Bratislava Slovakia
| | - Veronika Ostatná
- Institute of Biophysics of the Czech Academy of Sciences Královopolská 135 61265 Brno Czech Republic
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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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Pepin R, Layton ED, Liu Y, Afonso C, Tureček F. Where Does the Electron Go? Stable and Metastable Peptide Cation Radicals Formed by Electron Transfer. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:164-181. [PMID: 27709510 DOI: 10.1007/s13361-016-1512-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 09/12/2016] [Accepted: 09/15/2016] [Indexed: 06/06/2023]
Abstract
Electron transfer to doubly and triply charged heptapeptide ions containing polar residues Arg, Lys, and Asp in combination with nonpolar Gly, Ala, and Pro or Leu generates stable and metastable charge-reduced ions, (M + 2H)+●, in addition to standard electron-transfer dissociation (ETD) fragment ions. The metastable (M + 2H)+● ions spontaneously dissociate upon resonant ejection from the linear ion trap, giving irregularly shaped peaks with offset m/z values. The fractions of stable and metastable (M + 2H)+● ions and their mass shifts depend on the presence of Pro-4 and Leu-4 residues in the peptides, with the Pro-4 sequences giving larger fractions of the stable ions while showing smaller mass shifts for the metastables. Conversion of the Asp and C-terminal carboxyl groups to methyl esters further lowers the charge-reduced ion stability. Collisional activation and photodissociation at 355 nm of mass-selected (M + 2H)+● results in different dissociations that give sequence specific MS3 spectra. With a single exception of charge-reduced (LKGLADR + 2H)+●, the MS3 spectra do not produce ETD sequence fragments of the c and z type. Hence, these (M + 2H)+● ions are covalent radicals, not ion-molecule complexes, undergoing dramatically different dissociations in the ground and excited electronic states. The increased stability of the Pro-4 containing (M + 2H)+● ions is attributed to radicals formed by opening of the Pro ring and undergoing further stabilization by hydrogen atom migrations. UV-VIS photodissociation action spectroscopy and time-dependent density functional theory calculations are used in a case in point study of the stable (LKGPADR + 2H)+● ion produced by ETD. In contrast to singly-reduced peptide ions, doubly reduced (M + 3H)+ ions are stable only when formed from the Pro-4 precursors and show all characteristics of even electron ions regarding no photon absorption at 355 nm or ion-molecule reactions, and exhibiting proton driven collision induced dissociations. Graphical Abstract ᅟ.
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Affiliation(s)
- Robert Pepin
- Department of Chemistry, University of Washington, Bagley Hall, Box 351700, Seattle, WA, 98195-1700, USA
| | - Erik D Layton
- Department of Chemistry, University of Washington, Bagley Hall, Box 351700, Seattle, WA, 98195-1700, USA
| | - Yang Liu
- Department of Chemistry, University of Washington, Bagley Hall, Box 351700, Seattle, WA, 98195-1700, USA
| | - Carlos Afonso
- INSA Rouen, UNIROUEN, CNRS, COBRA, Normandie University, 76000, Rouen, France
| | - František Tureček
- Department of Chemistry, University of Washington, Bagley Hall, Box 351700, Seattle, WA, 98195-1700, USA.
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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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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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11
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Electrochemical reduction and oxidation signals of angiotensin peptides. Role of individual amino acid residues. Electrochem commun 2013. [DOI: 10.1016/j.elecom.2013.03.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Paleček E, Bartošík M, Ostatná V, Trefulka M. Electrocatalysis in proteins, nucleic acids and carbohydrates. CHEM REC 2012; 12:27-45. [DOI: 10.1002/tcr.201100029] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Indexed: 11/06/2022]
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Živanović M, Aleksić M, Ostatná V, Doneux T, Paleček E. Polylysine-Catalyzed Hydrogen Evolution at Mercury Electrodes. ELECTROANAL 2010. [DOI: 10.1002/elan.201000088] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ostatná V, Černocká H, Paleček E. Protein Structure-Sensitive Electrocatalysis at Dithiothreitol-Modified Electrodes. J Am Chem Soc 2010; 132:9408-13. [DOI: 10.1021/ja102427y] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Veronika Ostatná
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno; Czech Republic
| | - Hana Černocká
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno; Czech Republic
| | - Emil Paleček
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno; Czech Republic
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Paleček E, Heyrovský M, Janík B, Kaláb D, Pechan Z. From DC polarographic presodium wave of proteins to electrochemistry of biomacromolecules. ACTA ACUST UNITED AC 2010. [DOI: 10.1135/cccc2009511] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
History of electrochemistry of proteins and nucleic acids is briefly reviewed. The ability of proteins to catalyze hydrogen evolution at Hg electrodes was discovered almost 80 years ago in J. Heyrovský’s laboratory. This phenomenon was not sufficiently appreciated for several decades. Recently it has been shown that using constant current chronopotentiometric stripping (CPS) with hanging mercury drop, solid amalgam or Hg-film electrodes the CPS peak H is obtained with nanomolar concentrations of peptides and proteins. This peak is derived from the presodium wave but it has some new properties useful in protein research. It is sensitive to changes in protein structures and to protein redox states, representing a new tool for protein analysis applicable in biomedicine. Electroactivity of nucleic acids was discovered about 50 years ago. Electrochemistry of DNA and RNA is now a booming field because of its potential use in sensors for DNA hybridization and DNA damage. Quite recently it has been shown that electrochemistry can be applied also in polysaccharide analysis. A review with 99 references.
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Doneux T, Dorcák V, Palecek E. Influence of the interfacial peptide organization on the catalysis of hydrogen evolution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1347-1353. [PMID: 19743826 DOI: 10.1021/la9024603] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The hydrogen evolution reaction is catalyzed by peptides and proteins adsorbed on electrode materials with high overpotentials for this reaction, such as mercury. The catalytic response characteristics are known to be very sensitive to the composition and structure of the investigated biomolecule, opening the way to the implementation of a label-free, reagentless electroanalytical method in protein analysis. Herein, it is shown using the model peptide Cys-Ala-Ala-Ala-Ala-Ala that the interfacial organization significantly influences the catalytic behavior. This peptide forms at the electrode two distinct films, depending on the concentration and accumulation time. The low-coverage film, composed of flat-lying molecules (area per molecule of approximately 250-290 A(2)), yields a well-defined catalytic peak at potentials around -1.75 V. The high-coverage film, made of upright-oriented peptides (area per molecule of approximately 43 A(2)), is catalytically more active and the peak is observed at potentials less negative by approximately 0.4 V. The higher activity, evidenced by constant-current chronopotentiometry and cyclic voltammetry, is attributed to an increase in the acid dissociation constant of the amino acid residues as a result of the low permittivity of the interfacial region, as inferred from impedance measurements. An analogy is made to the known differences in acidic-basic behaviors of solvent-exposed and hydrophobic domains of proteins.
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Affiliation(s)
- Th Doneux
- Institute of Biophysics ASCR, v.v.i., 612 65 Brno, Czech Republic
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Bartosík M, Ostatná V, Palecek E. Electrochemistry of riboflavin-binding protein and its interaction with riboflavin. Bioelectrochemistry 2009; 76:70-5. [PMID: 19446502 DOI: 10.1016/j.bioelechem.2009.04.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 04/16/2009] [Accepted: 04/20/2009] [Indexed: 10/20/2022]
Abstract
Riboflavin-binding protein (RBP, a carrier of riboflavin) plays an essential role in embryo development. Electrochemical studies of the riboflavin-RBP interactions have been so far limited to changes in polarographic and voltammetric responses of riboflavin because of lack of methods capable to detect electrochemical changes in the RBP responses. Here we used constant current chronopotentiometric stripping analysis (CPSA) with the hanging mercury drop electrode (HMDE) and square wave voltammetry (SWV) with carbon paste electrode (CPE) to investigate RBP. We found that CPSA of RBP produces electrocatalytic peak H, capable to discriminate between apoprotein and holoprotein forms of RBP. This peak is suitable for studies of RBP-riboflavin interaction at nanomolar concentrations. We observed no sign of a release of riboflavin from holoprotein adsorbed at the HMDE surface. SWV at CPE required higher concentrations of RBP and displayed almost identical oxidation peaks of apoprotein and holoprotein.
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Affiliation(s)
- Martin Bartosík
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic
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Dorčák V, Bartošík M, Ostatná V, Paleček E, Heyrovský M. Interaction of Biomacromolecules with Surfaces Viewed by Electrochemical Methods. ELECTROANAL 2009. [DOI: 10.1002/elan.200804433] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Huska D, Adam V, Zitka O, Kukacka J, Prusa R, Kizek R. Chronopotentiometric Stripping Analysis of Gelatinase B, Collagen and Their Interaction. ELECTROANAL 2009. [DOI: 10.1002/elan.200804440] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Dorčák V, Paleček E. Electrochemical Determination of Thioredoxin Redox States. Anal Chem 2009; 81:1543-8. [DOI: 10.1021/ac802274p] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Vlastimil Dorčák
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i, Královopolská 135, CZ-612 65 Brno, Czech Republic
| | - Emil Paleček
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i, Královopolská 135, CZ-612 65 Brno, Czech Republic
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Paleček E, Ostatná V. Ionic strength-dependent structural transition of proteins at electrode surfaces. Chem Commun (Camb) 2009:1685-7. [DOI: 10.1039/b822274f] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Paleček E, Ostatná V. Potential-dependent surface denaturation of BSA in acid media. Analyst 2009; 134:2076-80. [DOI: 10.1039/b912602c] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Ostatná V, Kuralay F, Trnková L, Paleček E. Constant Current Chronopotentiometry and Voltammetry of Native and Denatured Serum Albumin at Mercury and Carbon Electrodes. ELECTROANAL 2008. [DOI: 10.1002/elan.200804206] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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