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The Effect of Natural Osmolyte Mixtures on the Temperature-Pressure Stability of the Protein RNase A. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/zpch-2017-1039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In biological cells, osmolytes appear as complex mixtures with variable compositions, depending on the particular environmental conditions of the organism. Based on various spectroscopic, thermodynamic and small-angle scattering data, we explored the effect of two different natural osmolyte mixtures, which are found in shallow-water and deep-sea shrimps, on the temperature and pressure stability of a typical monomeric protein, RNase A. Both natural osmolyte mixtures stabilize the protein against thermal and pressure denaturation. This effect seems to be mainly caused by the major osmolyte components of the osmolyte mixtures, i.e. by glycine and trimethylamine-N-oxide (TMAO), respectively. A minor compaction of the structure, in particular in the unfolded state, seems to be largely due to TMAO. Differences in thermodynamic properties observed for glycine and TMAO, and hence also for the two osmolyte mixtures, are most likely due to different solvation properties and interactions with the protein. Different from TMAO, glycine seems to interact with the amino acid side chains and/or the backbone of the protein, thus competing with hydration water and leading to a less hydrated protein surface.
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Combined pressure and temperature denaturation of ribonuclease A produces alternate denatured states. Biochem Biophys Res Commun 2016; 473:834-839. [DOI: 10.1016/j.bbrc.2016.03.135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 03/29/2016] [Indexed: 01/12/2023]
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3
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Gandhi A, Cui Y, Zhou M, Shah NP. Effect of KCl substitution on bacterial viability of Escherichia coli (ATCC 25922) and selected probiotics. J Dairy Sci 2014; 97:5939-51. [DOI: 10.3168/jds.2013-7681] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 06/14/2014] [Indexed: 11/19/2022]
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Kilimann KV, Doster W, Vogel RF, Hartmann C, Gänzle MG. Protection by sucrose against heat-induced lethal and sublethal injury of Lactococcus lactis: An FT-IR study. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2006; 1764:1188-97. [PMID: 16781903 DOI: 10.1016/j.bbapap.2006.04.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Revised: 04/19/2006] [Accepted: 04/25/2006] [Indexed: 11/26/2022]
Abstract
The heat inactivation of Lactococcus lactis was studied by determination of cell counts, and by FT-IR spectroscopy recording the average structure of cell proteins. Cell counts were measured after incubation milk buffer or milk buffer with 1. 5 M sucrose, and FT-IR spectra were recorded in (2)H(2)O or (2)H(2)O with 1. 5 M sucrose in the range of 6-75 degrees Celsius. Sucrose protected L. lactis against heat inactivation. The cell counts differed by up to 6-log cycles after treatment in milk buffer as compared to milk buffer with sucrose. The (1)H/(2)H exchange in proteins, and secondary structure elements were detected by the analysis of amide I', amide II and amide II' bands. A reduced (1)H/(2)H exchange as well as a lower content of disordered structural elements was observed when sucrose was present. Conformational fluctuations of native proteins as indicated by the (1)H/(2)H exchange were apparent already at sublethal temperatures. The loss of viability of L. lactis occurred in the same temperature range as the loss of the protein secondary structure. These results demonstrate that sucrose protects L. lactis against heat inactivation, and that the increased heat stability of proteins in the presence of sucrose contributed to this enhanced heat resistance.
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Affiliation(s)
- Klaus V Kilimann
- Lehrstuhl für Fluidmechanik und Prozessautomation, Technische Universität München, Weihenstephaner Steig 23, D-85350 Freising, Germany
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Ribó M, Font J, Benito A, Torrent J, Lange R, Vilanova M. Pressure as a tool to study protein-unfolding/refolding processes: The case of ribonuclease A. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2006; 1764:461-9. [PMID: 16388998 DOI: 10.1016/j.bbapap.2005.11.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2005] [Revised: 11/09/2005] [Accepted: 11/14/2005] [Indexed: 10/25/2022]
Abstract
This paper gives an overview of the application of high-pressure to study the folding/unfolding processes of proteins using Ribonuclease A as a model protein. A particular focus is the study of pressure-equilibrium unfolding and folding kinetics using variants and the information obtained by comparing these with the wild-type enzyme.
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Affiliation(s)
- M Ribó
- Laboratori d'Enginyeria de Proteïnes, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Campus de Montilivi s/n, 17071 Girona, Spain
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Dzwolak W, Kato M, Taniguchi Y. Fourier transform infrared spectroscopy in high-pressure studies on proteins. BIOCHIMICA ET BIOPHYSICA ACTA 2002; 1595:131-44. [PMID: 11983392 DOI: 10.1016/s0167-4838(01)00340-5] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Several aspects of the application of Fourier transform infrared spectroscopy (FTIR) in high-pressure studies on proteins are reviewed. Basic methodological considerations regarding spectral band assignments, quantitative analysis, and choice of pressure calibrants are also placed within the scope of this paper. This work attempts to evaluate recent developments in the field of high-pressure FTIR of proteins and its prospects for future. Particular attention is paid to the phenomenon of protein aggregation.
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Affiliation(s)
- Wojciech Dzwolak
- Department of Applied Chemistry, College of Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, Japan
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Dzwolak W, Kato M, Shimizu A, Taniguchi Y. Fourier-transform infrared spectroscopy study of the pressure-induced changes in the structure of the bovine alpha-lactalbumin: the stabilizing role of the calcium ion. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1433:45-55. [PMID: 10446358 DOI: 10.1016/s0167-4838(99)00150-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The Fourier-transform infrared spectroscopy (FTIR) technique with a diamond anvil cell has been applied for examination of the pressure-induced changes occurring in the secondary structure of the alpha-lactalbumin. This is the first high-pressure FTIR study of a calcium-binding protein which simultaneously takes into account spectral changes in both the calcium-ion-binding carboxyl groups' band and the amide I/I' vibrational band. Spectral behavior of three kinds of the protein: the undeuterated holoform, the fully deuterated holoform, and the undeuterated apoform was compared in the pressure range from 0.1 MPa up to 740 MPa. We found that the binding of calcium remarkably stabilizes the alpha-lactalbumin against pressure as it is followed approximately by a 200-MPa increase of the value of pressure at which denaturation occurs. A quantitative analysis of the band of antisymmetrical stretching vibrations of the calcium-binding carboxyl groups revealed that the pressure-induced changes in the calcium-binding loop occur in two stages. Binding of the calcium ion seemingly increases the pressure-stability of the calcium-binding loop to a higher degree than the pressure-stability of the secondary structure of the alpha-lactalbumin. We have also discussed in detail the complex pressure-enhanced H/D exchange in the alpha-lactalbumin. Finally, we have proposed a new assignment of major peaks in the helical region of the amide I/I' spectral band of the partially deuterated alpha-lactalbumin.
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Affiliation(s)
- W Dzwolak
- Department of Chemistry, College of Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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Takeda N, Nakano K, Kato M, Taniguchi Y. Pressure-induced structural rearrangements of bovine pancreatic trypsin inhibitor studied by FTIR spectroscopy. BIOSPECTROSCOPY 1998; 4:209-16. [PMID: 9639111 DOI: 10.1002/(sici)1520-6343(1998)4:3%3c209::aid-bspy6%3e3.0.co;2-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Fourier transform infrared (FTIR) spectroscopy combined with resolution enhancement techniques, second-derivative and difference spectroscopies, have been used to characterize pressure-induced changes in the structural rearrangements of bovine pancreatic trypsin inhibitor (BPTI) in D2O solution at 25.0 degrees C. According to the observed changes in the amide I' band up to 550 MPa, the secondary structure elements of BPTI, such as the alpha-helix, 3(10)-helix, beta-sheet, and beta-turn, are scarcely rearranged except for the loop structure of residues of 9-17 and 36-43. The polypeptide backbone is not extensively unfolded up to 550 MPa. The minor pressure-induced structural rearrangements are completely reversible. A further increase in pressure above 1000 MPa associated with the precipitation of BPTI in D2O buffer solution induces the partial structural rearrangements of the alpha-helix, beta-turn and/or 3(10)-helix, and beta-sheet. The polypeptide backbone of BPTI is not fully unfolded even above 1000 MPa. Most of the protected backbone amide protons involved in the beta-sheet remain intact in the pressure range where BPTI is not precipitated, while those involved in the alpha-helix and beta-turn and/or 3(10)-helix are exchanged with solvent deuterons. The protected backbone amide protons located near the surface regions are more easily exchanged with solvent deuterons by application of high pressure than those involved in the core.
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Affiliation(s)
- N Takeda
- Department of Chemistry, Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga, Japan
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Takeda N, Nakano K, Kato M, Taniguchi Y. Pressure-induced structural rearrangements of bovine pancreatic trypsin inhibitor studied by FTIR spectroscopy. ACTA ACUST UNITED AC 1998. [DOI: 10.1002/(sici)1520-6343(1998)4:3<209::aid-bspy6>3.0.co;2-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Fusi P, Goossens K, Consonni R, Grisa M, Puricelli P, Vecchio G, Vanoni M, Zetta L, Heremans K, Tortora P. Extreme heat- and pressure-resistant 7-kDa protein P2 from the archaeon Sulfolobus solfataricus is dramatically destabilized by a single-point amino acid substitution. Proteins 1997; 29:381-90. [PMID: 9365992 DOI: 10.1002/(sici)1097-0134(199711)29:3<381::aid-prot11>3.0.co;2-j] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study reports the characterization of the recombinant 7-kDa protein P2 from Sulfolobus solfataricus and the mutants F31A and F31Y with respect to temperature and pressure stability. As observed in the NMR, FTIR, and CD spectra, wild-type protein and mutants showed substantially similar structures under ambient conditions. However, midpoint transition temperatures of the denaturation process were 361, 334, and 347 K for wild type, F31A, and F31Y mutants, respectively: thus, alanine substitution of phenylalanine destabilized the protein by as much as 27 K. Midpoint transition pressures for wild type and F31Y mutant could not be accurately determined because they lay either beyond (wild type) or close to (F31Y) 14 kbar, a pressure at which water undergoes a phase transition. However, a midpoint transition pressure of 4 kbar could be determined for the F31A mutant, implying a shift in transition of at least 10 kbar. The pressure-induced denaturation was fully reversible; in contrast, thermal denaturation of wild type and mutants was only partially reversible. To our knowledge, both the pressure resistance of protein P2 and the dramatic pressure and temperature destabilization of the F31A mutant are unprecedented. These properties may be largely accounted for by the role of an aromatic cluster where Phe31 is found at the core, because interactions among aromatics are believed to be almost pressure insensitive; furthermore, the alanine substitution of phenylalanine should create a cavity with increased compressibility and flexibility, which also involves an impaired pressure and temperature resistance.
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Affiliation(s)
- P Fusi
- Dipartimento di Fisiologia e Biochimica generali, Università di Milano, Italy
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McKelvy ML, Britt TR, Davis BL, Gillie JK, Lentz LA, Leugers A, Nyquist RA, Putzig CL. Infrared Spectroscopy. Anal Chem 1996. [DOI: 10.1021/a1960003c] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marianne L. McKelvy
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
| | - Thomas R. Britt
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
| | - Bradley L. Davis
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
| | - J. Kevin Gillie
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
| | - L. Alice Lentz
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
| | - Anne Leugers
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
| | - Richard A. Nyquist
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
| | - Curtis L. Putzig
- Analytical Sciences Laboratory, The Dow Chemical Company, Michigan Division, Midland, Michigan 48667
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Ikushima Y, Saito N, Arai M. Promotion of lipase-catalyzed esterification of N-valeric acid and citronellol in supercritical carbon dioxide in the near-critical region. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1996. [DOI: 10.1252/jcej.29.551] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Norio Saito
- National Industrial Research Institute of Tohoku
| | - Masahiko Arai
- Institute for Chemical Reaction Science, Tohoku University
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