1
|
Belik AY, Rybkin AY, Goryachev NS, Sadkov AP, Filatova NV, Buyanovskaya AG, Talanova VN, Klemenkova ZS, Romanova VS, Koifman MO, Terentiev AA, Kotelnikov AI. Nanoparticles of water-soluble dyads based on amino acid fullerene C 60 derivatives and pyropheophorbide: Synthesis, photophysical properties, and photodynamic activity. Spectrochim Acta A Mol Biomol Spectrosc 2021; 260:119885. [PMID: 33993022 DOI: 10.1016/j.saa.2021.119885] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 04/22/2021] [Accepted: 04/25/2021] [Indexed: 06/12/2023]
Abstract
Synthesis, spectral properties, and photodynamic activity of water-soluble amino acid fullerene C60 derivatives (AFD) and four original AFD-PPa dyads, obtained by covalent addition of dye pyropheophorbide (PPa) to AFD, were studied. In aqueous solution, these AFD-PPa dyads form nanoassociates as a result of self-assembly. In this case, a significant change in the absorption spectra and strong quenching of the dye fluorescence in the structure of the dyads were observed. A comparison of superoxide or singlet oxygen generation efficiency of the studied compounds in an aqueous solution showed the photodynamic mechanism switching from type II (singlet oxygen generation of the native dye) to I type (superoxide generation of dyads). All dyads have pronounced phototoxicity on cells Hela with IC50 9.2 µM, 9.2 µM, 12.2 µM for dyads Val-C60-PPa, Ala-C60-PPa and Pro-C60-PPa, respectively. Such facilitation of type I photodynamic mechanism could be perspective against hypoxic tumors.
Collapse
Affiliation(s)
- A Yu Belik
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Oblast 142432, Russia.
| | - A Yu Rybkin
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Oblast 142432, Russia
| | - N S Goryachev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Oblast 142432, Russia; Lomonosov Moscow State University, Moscow 119991, Russia
| | - A P Sadkov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Oblast 142432, Russia
| | - N V Filatova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Oblast 142432, Russia
| | - A G Buyanovskaya
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 117813, Russia
| | - V N Talanova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 117813, Russia
| | - Z S Klemenkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 117813, Russia
| | - V S Romanova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 117813, Russia
| | - M O Koifman
- Ivanovo State University of Chemistry and Technology, Ivanovo 153000, Russia
| | - A A Terentiev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Oblast 142432, Russia; Lomonosov Moscow State University, Moscow 119991, Russia
| | - A I Kotelnikov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Oblast 142432, Russia; Lomonosov Moscow State University, Moscow 119991, Russia
| |
Collapse
|
2
|
Tat'yanenko LV, Dobrokhotova OV, Fadeev MA, Eremeev AB, Utyonishev AN, Tkachev VV, Goryachev NS, Kotelnikov AI, Fedorov BS. The Effect of Nitroxyalkyl Succinimides on Activity of Cyclic Guanosine Monophosphate Phosphodiesterase. Bull Exp Biol Med 2020; 168:330-333. [PMID: 31940127 DOI: 10.1007/s10517-020-04702-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Indexed: 11/29/2022]
Abstract
The effect of N-nitroxymethyl succinimide (1), N-(2-nitroxyethyl) succinimide (2) and N-(3-nitroxypropyl) succinimide (3) on enzymatic activity of cyclic guanosine monophosphate (cGMP) phosphodiesterase was studied and crystal structure of compound (2) was determined. It was shown that all studied N-nitroxy succinimides inhibited cGMP phosphodiesterase in a concentration range of 0.1-0.001 mM. Compound (2) noncompetitively and reversibly inhibited hydrolytic function of enzyme with Ki=1.7×10-5 М. Inhibition constant for the reference compound N-(2-nitroethyl) nicotinamide (nicorandil) was 3×10-5 М.
Collapse
Affiliation(s)
- L V Tat'yanenko
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
| | - O V Dobrokhotova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
| | - M A Fadeev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
| | - A B Eremeev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
| | - A N Utyonishev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
| | - V V Tkachev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
| | - N S Goryachev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia. .,M. V. Lomonosov Moscow State University, Moscow, Russia.
| | - A I Kotelnikov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia.,M. V. Lomonosov Moscow State University, Moscow, Russia
| | - B S Fedorov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
| |
Collapse
|
3
|
Pokidova OV, Batova EV, Sadkov AP, Eremeev AB, Fedorov BS, Kotelnikov AI. The Reactivity of 3-Hydroxy-6-methyl-2-ethylpyridine 2-Nitroxysuccinate and Reference Drugs in Model NO-Generating Systems. Dokl Chem 2019. [DOI: 10.1134/s0012500819060016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
4
|
Belik AY, Kukushkin VI, Rybkin AY, Goryachev NS, Mikhailov PA, Romanova VS, Kraevaya OA, Troshin PA, Kotelnikov AI. Application of SERS and SEF Spectroscopy for Detection of Water-Soluble Fullerene–Chlorin Dyads and Chlorin e6. Dokl Phys Chem 2018. [DOI: 10.1134/s0012501618070023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
5
|
Kotelnikova RA, Smolina AV, Zhilenkov AV, Soldatova YV, Faingold II, Troshin PA, Kotelnikov AI. Interaction of water-soluble pentaamino acid fullerene derivatives with membranes of phosphatidylcholine liposomes. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2082-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
6
|
Tat'yanenko LV, Sanina NA, Dobrokhotova OV, Kotelnikov AI, Goryachev NS, Pihteleva II, Kozub GI, Kondrateva TA. Action of Iron Nitrosyl Complexes, NO Donors, on the Activity of Sarcoplasmic Reticulum Ca 2+-ATPase and Cyclic Guanosine Monophosphate Phosphodiesterase. DOKL BIOCHEM BIOPHYS 2018. [PMID: 29536300 DOI: 10.1134/s1607672918010039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effect of iron nitrosyl complexes, NO donors, of a general formula [Fe2(L)2(NO)4] with functional sulfur-containing ligands (L-3-nitro-phenol-2-yl, 4-nitro-phenol-2-yl, or 1-methyl-tetrazol-5-yl) on the activity of sarcoplasmic reticulum Ca2+-ATPase and cyclic guanosine monophosphate phosphodiesterase (cGMP PDE) was studied. The test complexes uncoupled the hydrolytic and transport functions of Ca2+- ATPase, thus disturbing the balance of Ca2+ ions in cells, which may affect the formation of thrombi and adhesion of metastatic cells to the endothelium of capillaries. They also inhibited the activity of cGMP PDE, thereby contributing to the accumulation of the second messenger cGMP. The studied iron nitrosyl complexes can be considered as potential drugs.
Collapse
Affiliation(s)
- L V Tat'yanenko
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia.
| | - N A Sanina
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
| | - O V Dobrokhotova
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
| | - A I Kotelnikov
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
| | - N S Goryachev
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
| | - I I Pihteleva
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
| | - G I Kozub
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
| | - T A Kondrateva
- Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
| |
Collapse
|
7
|
Poletaeva DA, Khakina EA, Kukushkin VI, Rybkin AY, Goryachev NS, Belik AY, Zhilenkov AV, Troshin PA, Kotelnikova RA, Kotelnikov AI. Application of SERS spectroscopy for detection of water-soluble fullerene C60 derivatives and their covalent conjugates with dyes. Dokl Phys Chem 2015. [DOI: 10.1134/s0012501615010017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Syrtsova LA, Sanina NA, Kabachkov EN, Shkondina NI, Kotelnikov AI, Aldoshin SM. Exchange of cysteamine, thiol ligand in binuclear cationic tetranitrosyl iron complex, for glutathione. RSC Adv 2014. [DOI: 10.1039/c4ra01766h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper describes the comparative study of the decomposition of two iron nitrosyl complexes (NICs) with a cysteamine thiolate ligand {Fe2[S(CH2)2NH3]2(NO)4}SO4·2.5H2O (I) and a glutathione (GSH)-ligand, [Fe2(SC10H17N3O6)2(NO)4]SO4·2H2O (II), which spontaneously evolve NO in aqueous medium.
Collapse
Affiliation(s)
- L. A. Syrtsova
- Department of Kinetics of Chemical and Biological Processes
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences
- 142432 Chernogolovka, Russian Federation
| | - N. A. Sanina
- Department of Structure of Matter
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences
- 142432 Chernogolovka, Russian Federation
| | - E. N. Kabachkov
- Department of functional inorganic materials
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences
- 142432 Chernogolovka, Russian Federation
| | - N. I. Shkondina
- Department of Kinetics of Chemical and Biological Processes
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences
- 142432 Chernogolovka, Russian Federation
| | - A. I. Kotelnikov
- Department of Kinetics of Chemical and Biological Processes
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences
- 142432 Chernogolovka, Russian Federation
| | - S. M. Aldoshin
- Department of Structure of Matter
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences
- 142432 Chernogolovka, Russian Federation
| |
Collapse
|
9
|
Kotelnikova RA, Smolina AV, Grigoryev VV, Faingold II, Mischenko DV, Rybkin AY, Poletayeva DA, Vankin GI, Zamoyskiy VL, Voronov II, Troshin PA, Kotelnikov AI, Bachurin SO. Influence of water-soluble derivatives of [60]fullerene on therapeutically important targets related to neurodegenerative diseases. Med Chem Commun 2014. [DOI: 10.1039/c4md00194j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water soluble fullerene derivatives I and II were shown to behave as promising neuroprotective agents that improve cognitive functioning in animals.
Collapse
Affiliation(s)
| | | | - V. V. Grigoryev
- Institute of Physiologically Active Compounds of Russian Academy of Sciences
- Chernogolovka
- Russia
| | | | | | | | | | - G. I. Vankin
- Institute of Physiologically Active Compounds of Russian Academy of Sciences
- Chernogolovka
- Russia
| | - V. L. Zamoyskiy
- Institute of Physiologically Active Compounds of Russian Academy of Sciences
- Chernogolovka
- Russia
| | | | | | | | - S. O. Bachurin
- Institute of Physiologically Active Compounds of Russian Academy of Sciences
- Chernogolovka
- Russia
| |
Collapse
|
10
|
Barinov AV, Goryachev NS, Poletaeva DA, Rybkin AY, Kornev AB, Troshin PA, Schmitt FJ, Renger G, Eichler HJ, Kotelnikov AI. Photodynamic activity of hybrid nanostructure on the basis of polycationic fullerene derivative and xanthene dye eosine Y. ACTA ACUST UNITED AC 2012. [DOI: 10.1134/s1995078012040039] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
11
|
Medvedev ES, Kotelnikov AI, Goryachev NS, Ortega JM, Stuchebryukhov AA. Kinetics of reduction of bacteriochlorophyll dimer in reaction centers of photosynthetic bacteria. Russ J Phys Chem B 2011. [DOI: 10.1134/s1990793111020217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
12
|
Medvedev ES, Kotelnikov AI, Barinov AV, Psikha BL, Ortega JM, Popović DM, Stuchebrukhov AA. Protein dynamics control of electron transfer in photosynthetic reaction centers from Rps. sulfoviridis. J Phys Chem B 2008; 112:3208-16. [PMID: 18284231 PMCID: PMC2855845 DOI: 10.1021/jp709924w] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the cycle of photosynthetic reaction centers, the initially oxidized special pair of bacteriochlorophyll molecules is subsequently reduced by an electron transferred over a chain of four hemes of the complex. Here, we examine the kinetics of electron transfer between the proximal heme c-559 of the chain and the oxidized special pair in the reaction center from Rps. sulfoviridis in the range of temperatures from 294 to 40 K. The experimental data were obtained for three redox states of the reaction center, in which one, two, or three nearest hemes of the chain are reduced prior to special pair oxidation. The experimental kinetic data are analyzed in terms of a Sumi-Marcus-type model developed in our previous paper,1 in which similar measurements were reported on the reaction centers from Rps. viridis. The model allows us to establish a connection between the observed nonexponential electron-transfer kinetics and the local structural relaxation dynamics of the reaction center protein on the microsecond time scale. The activation energy for relaxation dynamics of the protein medium has been found to be around 0.1 eV for all three redox states, which is in contrast to a value around 0.4-0.6 eV in Rps. viridis.1 The possible nature of the difference between the reaction centers from Rps. viridis and Rps. sulfoviridis, which are believed to be very similar, is discussed. The role of the protein glass transition at low temperatures and that of internal water molecules in the process are analyzed.
Collapse
Affiliation(s)
- E. S. Medvedev
- The Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - A. I. Kotelnikov
- The Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - A. V. Barinov
- The Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - B. L. Psikha
- The Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - J. M. Ortega
- Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla-CSIC, 41092 Seville, Spain
| | - D. M. Popović
- Department of Chemistry, University of California, Davis, California 95616
| | | |
Collapse
|
13
|
Medvedev ES, Kotelnikov AI, Goryachev NS, Psikha BL, Ortega JM, Stuchebrukhov AA. Protein dynamics control of electron transfer in reaction centers fromRps. viridis. Molecular Simulation 2006. [DOI: 10.1080/08927020600880802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
14
|
Medvedev DM, Medvedev ES, Kotelnikov AI, Stuchebrukhov AA. Analysis of the kinetics of the membrane potential generated by cytochrome c oxidase upon single electron injection. Biochimica et Biophysica Acta (BBA) - Bioenergetics 2005; 1710:47-56. [PMID: 16242114 DOI: 10.1016/j.bbabio.2005.08.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2005] [Revised: 08/26/2005] [Accepted: 08/30/2005] [Indexed: 10/25/2022]
Abstract
In a recent work from this group (Popovic, D. M.; Stuchebrukhov A. A. FEBS Lett. 2004, 566, 126), a model of proton pumping by cytochrome c oxidase (CcO) was proposed. The key element of the model is His291 (bovine notation), a histidine ligand to enzyme's CuB redox center, which plays the role of the pump element. The model assumes that upon electron transfer between heme a and the binuclear catalytic center of the enzyme, two sequential proton transfers occur: First, a proton from Glu242 is transferred to an unprotonated His291, then a second proton, after reprotonation of Glu242 from the negative side of the membrane, is transferred to a hydroxyl group in the binuclear center, a water molecule is formed, and the first proton, due to proton-proton repulsion, is expelled from His291 to the positive side of the membrane, resulting in a pumping event. In the process the free energy of water formation (i.e., reduction of oxygen) is transformed into a proton gradient across the membrane. The model possesses specific kinetic features. It assumes, for example, that upon electron transfer the first proton is transferred to the proton-loading site of the pump, His291, and not to the catalytic center of the enzyme. Here, we analyze the kinetic properties of the proposed model, and calculate the time dependence of the membrane potential generated by CcO upon a single electron injection into the enzyme. These data are directly compared with recent experimental measurements of the membrane potential generated by CcO. Specifically, F to O, and O to E transitions will be discussed. Several enzymes from different organisms (bovine, two bacterial enzymes, and several mutants) are compared and discussed in detail. The kinetic description, however, is phenomenological, and does not include explicitly the nature of the groups involved in proton translocation, except in terms of their position depth within the membrane; thus, the kinetic equations developed here are in fact describe a generic model, similar, e.g., to that proposed earlier by Peter Rich (P.R. Rich, Towards an understanding of the chemistry of oxygen reduction and proton translocation in the iron-copper respiratory oxidases. Aust. J. Plant Physiol. 22 (1995) 479-486), and which is based on the idea of displacement of the pumped protons by the chemical ones.
Collapse
Affiliation(s)
- D M Medvedev
- Chemistry Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | | | | | | |
Collapse
|
15
|
Kotelnikov AI, Ortega JM, Medvedev ES, Psikha BL, Garcia D, Mathis P. Effect of protein relaxation on electron transfer from the cytochrome subunit to the bacteriochlorophyll dimer in Rps. sulfoviridis reaction centers within mixed adiabatic/nonadiabatic model. Bioelectrochemistry 2002; 56:3-8. [PMID: 12009432 DOI: 10.1016/s1567-5394(02)00036-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The broad set of nonexponential electron transfer (ET) kinetics in reaction centers (RC) from Rhodopseudomonas sulfoviridis in temperature range 297-40 K are described within a mixed adiabatic/nonadiabatic model. The key point of the model is the combination of Sumi-Marcus and Rips-Jortner approaches which can be represented by the separate contributions of temperature-independent vibrational (v) and temperature-dependent diffusive (d) coordinates to the preexponential factor, to the free energy of reaction DeltaG=DeltaG(v)+DeltaG(d)(T) and to the reorganization energy lambda=lambda(v)+lambda(d)(T). The broad distribution of protein dielectric relaxation times along the diffusive coordinate is considered within the Davidson-Cole formalism.
Collapse
Affiliation(s)
- A I Kotelnikov
- Institute of Problems of Chemical Physics RAS, Chernogolovka, 142432 Moscow region, Russia.
| | | | | | | | | | | |
Collapse
|
16
|
Kotelnikov AI, Medvedev ES, Medvedev DM, Stuchebrukhov AA. Kinetic Treatment of Coupled Electron and Proton Transfer in Flash-Photolysis Experiments on Carbon Monoxide-Inhibited Mixed-Valence Cytochrome c Oxidase. J Phys Chem B 2001. [DOI: 10.1021/jp010001t] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. I. Kotelnikov
- Department of Chemistry, University of California, Davis, California 95616, and Institute of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow, Russia
| | - E. S. Medvedev
- Department of Chemistry, University of California, Davis, California 95616, and Institute of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow, Russia
| | - D. M. Medvedev
- Department of Chemistry, University of California, Davis, California 95616, and Institute of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow, Russia
| | - A. A. Stuchebrukhov
- Department of Chemistry, University of California, Davis, California 95616, and Institute of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow, Russia
| |
Collapse
|
17
|
Pastukhov AV, Vogel VR, Kotelnikov AI. Enzyme-like effect of metmyoglobin on the thermal cis-trans isomerization of stilbazolium betaine. J Biol Inorg Chem 2000; 5:307-12. [PMID: 10907741 DOI: 10.1007/pl00010659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A photochromic compound, stilbazolium betaine M, when associated with metmyoglobin undergoes an accelerated thermal cis-trans isomerization. A study of the pH and ionic strength dependence of the isomerization reaction rate of the photochrome associated with metmyoglobin was performed. A comparative investigation of the reaction carried out in the presence of three proteins, metmyoglobin, apomyoglobin, and human albumin, indicates a specific influence of the heme pocket environment on the reaction. Possible mechanisms of the reaction acceleration are considered.
Collapse
Affiliation(s)
- A V Pastukhov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region.
| | | | | |
Collapse
|
18
|
|
19
|
Kotelnikova RA, Kotelnikov AI, Bogdanov GN, Romanova VS, Kuleshova EF, Parnes ZN, Vol'pin ME. Membranotropic properties of the water soluble amino acid and peptide derivatives of fullerene C60. FEBS Lett 1996; 389:111-4. [PMID: 8766810 DOI: 10.1016/0014-5793(96)00537-6] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The modifying effects of the products of the equimolar addition Of DL-alanine and DL-alanyl-DL-alanine to fullerene C60 on the structure and permeability of the lipid bilayer of phosphatidylcholine liposomes has been studied using the luminescence probe technique. It is shown that these water soluble amino acid and dipeptide derivatives of fullerene (C60-AD) are quenchers of pyrene fluorescence and erythrosine phosphorescence of in both a water solution and liposomes. To study the permeability of the lipid bilayer a procedure based on the triplet probe technique has been developed. It has been found that the C60-AD derivatives under study are able to localize inside the artificial membrane, to penetrate into the liposomes through the lipid bilayer and to perform activated transmembrane transport of bivalent metal ions.
Collapse
Affiliation(s)
- R A Kotelnikova
- Institute of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow, Russian Federation
| | | | | | | | | | | | | |
Collapse
|
20
|
Likhtenstein GI, Kulikov AV, Kotelnikov AI, Levchenko LA. Methods of physical labels--a combined approach to the study of microstructure and dynamics in biological systems. J Biochem Biophys Methods 1986; 12:1-28. [PMID: 3080515 DOI: 10.1016/0165-022x(86)90047-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The physical principles of several new approaches to the investigation of biological and model systems are discussed, including versions of the spin label method based on relaxation measurements, and also the methods of triplet, Mössbauer, electron-scattering and radical-pair labels and probes. It is shown that all these methods make it possible to investigate molecular mobility of the medium with the correlation frequencies tau c-1 = 10(-3) -10(11) s-1, to measure the rate constants of collisions Ktr = 10(3) -10(10) M-1 s-1, to measure the distance between centers up to 100 A and finally, to evaluate the immersion depths of paramagnetic and chromophore centers in matrices up to 40 A. The combined approach is demonstrated with examples from studies of the structure of nitrogenase, the reaction centers of photosynthetic bacteria and sarcoplasmic reticulum membranes and from studies of the molecular dynamics of proteins and membranes.
Collapse
|