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Szabó CL, Sebák F, Bodor A. Monitoring Protein Global and Local Parameters in Unfolding and Binding Studies: The Extended Applicability of the Diffusion Coefficient─Molecular Size Empirical Relations. Anal Chem 2022; 94:7885-7891. [PMID: 35617314 DOI: 10.1021/acs.analchem.2c00481] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Protein unfolding and denaturation are main issues in biochemical and pharmaceutical research. Using a global parameter, the translational diffusion coefficient D, folded, unfolded, and intrinsically disordered proteins of a given molar mass M can be distinguished based on their distinct hydrodynamic properties. For broader applications, we provide generalized, PFG-NMR-based empirical D-M relations validated at different temperatures and ready to use with the corresponding corrections in different media. We demonstrate that these relations enable a more accurate molecular mass determination and show fewer potential errors than those of the common methods based on small-molecular diffusion standards. We monitor unfolding of three model proteins using 8 M urea and dimethyl sulfoxide (DMSO)-water mixtures as denaturing agents, highlighting the effect of disulfide bonds. Denaturation in 8 M urea is pH-dependent; in addition, for proteins with highly stable disulfide bonds, a reducing agent (TCEP) is required to achieve complete unfolding. Regarding the effect of local parameters, we show that at low DMSO concentrations─common conditions in pharmaceutical binding studies─the PFG-NMR-derived global parameters are not significantly affected. Still, the atomic environments can change, and the bound solvent molecule can inhibit the binding of a partner molecule. Using proteins with natural isotopic abundance, this effect can be proven by fast 1H-15N 2D correlation spectra. Our results enable fast and easy estimation of protein molecular mass and the degree of folding in various media; moreover, the effect of the cosolvent on the atomic-level structure can be traced without the need of isotope labeling.
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Affiliation(s)
- Csenge Lilla Szabó
- Institute of Chemistry, Analytical and BioNMR Laboratory, Eötvös Loránd University, Pázmány Péter sétány 1/a, Budapest 1117, Hungary.,Hevesy György PhD School of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/a, Budapest 1117, Hungary
| | - Fanni Sebák
- Institute of Chemistry, Analytical and BioNMR Laboratory, Eötvös Loránd University, Pázmány Péter sétány 1/a, Budapest 1117, Hungary
| | - Andrea Bodor
- Institute of Chemistry, Analytical and BioNMR Laboratory, Eötvös Loránd University, Pázmány Péter sétány 1/a, Budapest 1117, Hungary
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Balueva AS, Musina EI, Nikolaeva YA, Karasik AA, Sinyashin OG. Complexes of Phosphorus-containing Cyclophanes and Cryptands with Metals, Anions, and Organic Substrates. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428019110022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Karasik AA, Strelnik ID, Musina EI, Dayanova IR, Elistratova JG, Mustafina AR, Sinyashin OG. Luminescent complexes of 1,5-diaza-3,7-diphosphacyclooctanes with coinage metals. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1539854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Andrey A. Karasik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Igor D. Strelnik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Elvira I. Musina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Irina R. Dayanova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Julia G. Elistratova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Asiya R. Mustafina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Oleg G. Sinyashin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan, Russia
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Spiridonova YS, Musina EI, Dayanova IR, Naumova OE, Litvinov IA, Karasik AA. Synthesis and Structure of N-Pyridyl-Containing Cyclic Aminomethylphosphines. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218110038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Karasik AA, Musina EI, Balueva AS, Strelnik ID, Sinyashin OG. Cyclic aminomethylphosphines as ligands. Rational design and unpredicted findings. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2016-1022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract:Rational design of title ligands and their transition metal complexes gave the high effective catalysts for hydrogen economy and perspective “stimuli-responsive” luminescent materials. Together with the above novel cyclic aminomehtylphospine ligands have showed a row of unpredicted properties like spontaneous formation of macrocyclic molecules, unique reversible slitting of macrocycles on to the smaller cycles, rapid interconversion of the isomers catalyzed by both acids and transitional metals, bridging behavior of usually chelating ligands and unexpected high influence of handling substituents on N-atoms on to the catalytic and luminescent properties of P-complexes.
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Affiliation(s)
- Andrey A. Karasik
- 1A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, Arbuzov str. 8, 420088, Kazan, Russia
| | - Elvira I. Musina
- 1A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, Arbuzov str. 8, 420088, Kazan, Russia
| | - Anna S. Balueva
- 1A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, Arbuzov str. 8, 420088, Kazan, Russia
| | - Igor D. Strelnik
- 1A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, Arbuzov str. 8, 420088, Kazan, Russia
| | - Oleg G. Sinyashin
- 1A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, Arbuzov str. 8, 420088, Kazan, Russia
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Karasik AA. Cyclic aminomethylphosphines as ligands: Balancing between rational design and unpredicted findings. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1211656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Andrey A. Karasik
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan, Russia
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Musina EI, Fesenko TI, Strelnik ID, Polyancev FM, Latypov SK, Lönnecke P, Hey-Hawkins E, Karasik AA, Sinyashin OG. Synthesis and unique reversible splitting of 14-membered cyclic aminomethylphosphines on to 7-membered heterocycles. Dalton Trans 2015; 44:13565-72. [PMID: 26135988 DOI: 10.1039/c5dt01910a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A novel type of 14-membered cyclic polyphosphine, namely 1,8-diaza-3,6,10,13-tetraphosphacyclotetradecanes 2a–4ahas been synthesized by the condensation of 1,2-bis(phenylphosphino)ethane, formaldehyde and alkylamines (isopropylamine, ethylamine and cyclohexylamine) as a RRRR/SSSS-stereoisomer. The structure of macrocycle 2a was investigated by NMR-spectroscopy and X-ray crystal structure analysis. The unique reversible processes of macrocycles 2a–4a splitting onto the corresponding rac- (2b–4b) and meso- (2c–4c) stereoisomers of 1-aza-3,6-diphosphacycloheptanes were discovered.
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Affiliation(s)
- Elvira I Musina
- A.E. Arbuzov Institute of Organic and Physical Chemistry of KSC RAS, Arbuzov str. 8, Kazan, 420088, Russian Federation.
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Mamedov VA, Kalinin AA, Zhukova NA, Syakaev VV, Rizvanov IK, Latypov SK, Sinyashin OG. A short and efficient protocol for the synthesis of imidazo[1,5- a ]quinoxalin-4-ones from 3-aroylquinoxalinones and compounds with the aminomethylene moiety. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Heterocyclic Phosphines with P-C-X Fragments (X=O, N, P). ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Spiridonova YS, Balueva AS, Krivolapov DB, Litvinov IA, Musina EI, Karasik AA, Sinyashin OG. New aminomethylphosphines with cyanophenyl substituents at the nitrogen atoms. Russ Chem Bull 2014. [DOI: 10.1007/s11172-013-0360-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Chelating cyclic aminomethylphosphines and their transition metal complexes as a promising basis of bioinspired mimetic catalysts. MENDELEEV COMMUNICATIONS 2013. [DOI: 10.1016/j.mencom.2013.09.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Latypov SK, Strelnik AG, Ignatieva SN, Hey-Hawkins E, Balueva AS, Karasik AA, Sinyashin OG. Structure and Dynamics of P,N-Containing Heterocycles and Their Metal Complexes in Solution. J Phys Chem A 2012; 116:3182-93. [PMID: 22414208 DOI: 10.1021/jp209281c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Shamil K. Latypov
- State Budgetary-Funded Institution of Science, A. E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, 420088 Kazan, 8 Arbuzov str., Russia
| | - Anna G. Strelnik
- State Budgetary-Funded Institution of Science, A. E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, 420088 Kazan, 8 Arbuzov str., Russia
| | - Svetlana N. Ignatieva
- State Budgetary-Funded Institution of Science, A. E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, 420088 Kazan, 8 Arbuzov str., Russia
| | - Evamarie Hey-Hawkins
- Institut für Anorganische Chemie der Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Anna S. Balueva
- State Budgetary-Funded Institution of Science, A. E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, 420088 Kazan, 8 Arbuzov str., Russia
| | - Andrey A. Karasik
- State Budgetary-Funded Institution of Science, A. E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, 420088 Kazan, 8 Arbuzov str., Russia
| | - Oleg G. Sinyashin
- State Budgetary-Funded Institution of Science, A. E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Sciences, 420088 Kazan, 8 Arbuzov str., Russia
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Mikhaylov D, Gryaznova T, Dudkina Y, Khrizanphorov M, Latypov S, Kataeva O, Vicic DA, Sinyashin OG, Budnikova Y. Electrochemical nickel-induced fluoroalkylation: synthetic, structural and mechanistic study. Dalton Trans 2011; 41:165-72. [PMID: 22086156 DOI: 10.1039/c1dt11299f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrocatalytic generation of nickel catalysts in low oxidation states by reduction of nickel complexes with various ligands (2,2'-bipyridine, 2,2':6',2''-terpyridine, (S,S)-2,6-bis(4-phenyl-2-oxazolin-2-yl)-pyridine) in the presence of olefinic substrates and fluoroalkyl halides leads to new organic products derived from addition-dimerization processes. Due to the presence of two stereocenters in the dimerization products two diastereomers were characterized by a variety of analytical techniques including multi-dimensional NMR methods and X-ray single crystal diffraction. The formation of dimers was prevented by the inclusion of the hydrogen atom donor tributyltin hydride. The cyclic voltammetry study of selected nickel complexes along with fluoroalkyl halides demonstrated that Ni(I)L is the active form of the catalyst.
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Affiliation(s)
- Dmitry Mikhaylov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences, 8, Arbuzov str., 420088, Kazan, Russian Federation
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New malonate macrocycle bearing two isosteviol moieties and its adduct with fullerene C60. MENDELEEV COMMUNICATIONS 2011. [DOI: 10.1016/j.mencom.2011.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Romanova IP, Bogdanov AV, Mironov VF, Shaikhutdinova GR, Larionova OA, Latypov SK, Balandina AA, Yakhvarov DG, Gubaidullin AT, Saifina AF, Sinyashin OG. Deoxygenation of Some α-Dicarbonyl Compounds by Tris(diethylamino)phosphine in the Presence of Fullerene C60. J Org Chem 2011; 76:2548-57. [DOI: 10.1021/jo102332e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Irina P. Romanova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Andrey V. Bogdanov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Vladimir F. Mironov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Gulnara R. Shaikhutdinova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Olga A. Larionova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Shamil K. Latypov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Alsu A. Balandina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Dmitry G. Yakhvarov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Aidar T. Gubaidullin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Alina F. Saifina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
| | - Oleg G. Sinyashin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, Arbuzov str., 8 Kazan 420088 Russia
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