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Brindell M, Stawoska I, Orzeł L, Labuz P, Stochel G, van Eldik R. Application of high pressure laser flash photolysis in studies on selected hemoprotein reactions. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2008; 1784:1481-92. [PMID: 18778796 DOI: 10.1016/j.bbapap.2008.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Revised: 07/14/2008] [Accepted: 08/04/2008] [Indexed: 12/31/2022]
Abstract
This article focuses on the application of high pressure laser flash photolysis for studies on selected hemoprotein reactions with the objective to establish details of the underlying reaction mechanisms. In this context, particular attention is given to the reactions of small molecules such as dioxygen, carbon monoxide, and nitric oxide with selected hemoproteins (hemoglobin, myoglobin, neuroglobin and cytochrome P450(cam)), as well as to photo-induced electron transfer reactions occurring in hemoproteins (particularly in various types of cytochromes). Mechanistic conclusions based on the interpretation of the obtained activation volumes are discussed in this account.
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Affiliation(s)
- Małgorzata Brindell
- Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland
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Hamdane D, Vasseur-Godbillon C, Baudin-Creuza V, Hoa GHB, Marden MC. Reversible Hexacoordination of α-Hemoglobin-stabilizing Protein (AHSP)/α-Hemoglobin Versus Pressure. J Biol Chem 2007; 282:6398-404. [PMID: 17194704 DOI: 10.1074/jbc.m610543200] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Using high hydrostatic pressure or hydrogen peroxide as perturbing agents, we demonstrate a protective effect of the chaperone AHSP for the alpha-chains of Hb. High pressure induces an irreversible aggregation of the ferrous deoxy alpha-chains, whereas the AHSP/alpha-Hb complex shows reversible hexacoordination of the alpha-Hb without protein aggregation. Upon pressure release, the relaxation kinetics of the transition from the hexacoordinated to pentacoordinated form of alpha-Hb in the presence of AHSP exhibit a biphasic shape. High pressure did not induce dissociation of alpha-Hb from its chaperone, as evidenced by the ligand binding kinetics that show a unique rate for the AHSP/alpha-Hb complex. For both free alpha-Hb and the AHSP/alpha-Hb complex, the bimolecular rate constant of CO binding (k(CO)(on)) versus pressure exhibits a bell shape, attributed to the transition of the rate-determining step from the chemical barrier to the migration of CO within the protein matrix. These results reveal a plasticity of the alpha-Hb active site in the presence of the chaperone and indicate that the AHSP was still active at 300 MPa. The ferric state of the AHSP/alpha-Hb complex shows hexacoordination even at atmospheric pressures, indicating a His-Fe-His binding scheme as previously observed in neuroglobin and cytoglobin. The reaction with hydrogen peroxide of ferric alpha-Hb within the complex also demonstrates a protection against aggregation.
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Affiliation(s)
- Djemel Hamdane
- INSERM U779, University of Paris XI, 94275 Le Kremlin-Bicêtre, France
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The interpretation and mechanistic significance of activation volumes for organometallic reactions. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2006. [DOI: 10.1016/s0065-3160(06)41001-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Hamdane D, Kiger L, Hoa GHB, Dewilde S, Uzan J, Burmester T, Hankeln T, Moens L, Marden MC. High Pressure Enhances Hexacoordination in Neuroglobin and Other Globins. J Biol Chem 2005; 280:36809-14. [PMID: 16100391 DOI: 10.1074/jbc.m506253200] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The techniques of high applied pressure and flash photolysis have been combined to study ligand rebinding to neuroglobin (Ngb) and tomato Hb, globins that may display a His-Fe-His hexacoordination in the absence of external ligands. High pressure induces a moderate decrease in the His association rate and a large decrease in His dissociation rate, thus leading to an enhancement of the overall His affinity. The overall structural difference between penta- and hexacoordinated globins may be rather small and can be overcome by external modifications such as high pressure. Over the pressure range 0.1-700 MPa (7 kbar), the globins may show a loss of over a factor of 100 in the amplitude of the bimolecular rebinding phase after photodissociation. The kinetic data show that pressure induces a moderate increase of the rate for ligand binding from the correlated pair state (just after photodissociation) and a large (factor of 1000) decrease in rate for migration through the protein. The effect on the ligand migration phase was similar for both the external ligands (such as oxygen) as for the internal (histidine) ligand, suggesting the dominant role of protein fluctuations, rather than specific chemical barriers. Thus high pressure efficiently closes the protein migration channels; however, contrary to the effect of high viscosity, high pressure induces a greater decrease in rate for ligand migration toward the exterior (heme to the solvent) versus inward migration, as if the presence of the ligand itself induces an additional steric constraint.
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Affiliation(s)
- Djemel Hamdane
- INSERM U473, 78 rue du General Leclerc, 94275 Le Kremlin-Bicêtre, France
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Uchida T, Ishimori K, Morishima I. Unusual pressure effects on ligand rebinding to the human myoglobin Leucine 29 mutants. J Biol Chem 2000; 275:30309-16. [PMID: 10906339 DOI: 10.1074/jbc.m910287199] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Using high pressure flash photolysis, we revealed that the side chain of Leu(29) controls the reaction volume of the ligand migration process in myoglobin, which is the primary factor for the unusual activation volume of ligand binding in some Leu(29) mutants. As we previously reported (Adachi, S., Sunohara, N., Ishimori, K., and Morishima, I. (1992) J. Biol. Chem. 267, 12614-12621), CO bimolecular rebinding in the L29A mutant was unexpectedly decelerated by pressurization, suggesting that the rate-determining step is switched to ligand migration. However, very slow CO bimolecular rebinding of the mutants implies that bond formation is still the rate-determining step. To gain further insights into effects of the side chain on ligand binding, we prepared some new Leu(29) mutants to measure the CO and O(2) rebinding reaction rates under high hydrostatic pressure. CO bimolecular rebinding in the mutants bearing Gly or Ser at position 29 was also decelerated upon pressurization, resulting in apparent positive activation volumes (DeltaV), as observed for O(2) binding. Based on the three-state model, we concluded that the increased space available to ligands in these mutants enhances the volume difference between the geminate and deoxy states (DeltaV(32)), which shifts the apparent activation volume to the positive side, and that the apparent positive activation volume is not due to contribution of the ligand migration process to the rate-determining step.
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Affiliation(s)
- T Uchida
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan
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Drljaca A, Hubbard CD, van Eldik R, Asano T, Basilevsky MV, le Noble WJ. Activation and Reaction Volumes in Solution. 3. Chem Rev 1998; 98:2167-2290. [PMID: 11848963 DOI: 10.1021/cr970461b] [Citation(s) in RCA: 272] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Drljaca
- Institute for Inorganic Chemistry, University of Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany, Institute for Fundamental Research of Organic Chemistry, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Japan, Karpov Institute of Physical Chemistry, 10, Vorontsovo Pole, 103064 Moscow, Russia, and Department of Chemistry, State University of New York, Stony Brook, New York 11794-3400
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Buchalova M, Busch DH, van Eldik R. Mechanistic Insight from Energy and Volume Profiles for CO Binding to a Lacunar Iron(II) Cyclidene Complex. Inorg Chem 1998. [DOI: 10.1021/ic9711426] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maria Buchalova
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Institute for Inorganic Chemistry, University of Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Daryle H. Busch
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Institute for Inorganic Chemistry, University of Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Rudi van Eldik
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Institute for Inorganic Chemistry, University of Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
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6 Biochemistry At Depth. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s1546-5098(08)60231-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Philo JS, Dreyer U, Lary JW. Quaternary structure dynamics and carbon monoxide binding kinetics of hemoglobin valency hybrids. Biophys J 1996; 70:1949-65. [PMID: 8785354 PMCID: PMC1225164 DOI: 10.1016/s0006-3495(96)79760-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The kinetics of CO binding and changes in quaternary structure for symmetric valency hybrids of human hemoglobin have been extensively studied by laser photolysis techniques. Both alpha+beta and alpha beta+ hybrids were studied with five different ferric ligands, over a broad range of CO concentrations and photolysis levels. After full CO photolysis, the hybrid tetramers switch extensively and rapidly (< 200 microseconds) to the T quaternary structure. Both R --> T and T --> R transition rates for valency hybrid tetramers with 0 and 1 bound CO have been obtained, as well as the CO association rates for alpha and beta subunits in the R and T states. The results reveal submillisecond R reversible T interconversion, and, for the first time, the changes in quaternary rates and equilibria due to binding a single CO per tetramer have been resolved. The data also show significant alpha-beta differences in quaternary dynamics and equilibria. The allosteric constants do not vary with the spin states of the ferric subunits as predicted by the Perutz stereochemical model. For the alpha beta+CN hybrid the kinetics are heterogeneous and imply partial conversion to a T-like state with very low (seconds) R reversible T interconversion.
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Affiliation(s)
- J S Philo
- Department of Molecular and Cell Biology, University of Connecticut, Storrs 06269-3125.
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Kato M, Makino R, Iizuka T. Thermodynamic aspects of the CO-binding reaction to cytochrome P-450cam. Relevance with their biological significance and structure. BIOCHIMICA ET BIOPHYSICA ACTA 1995; 1246:178-84. [PMID: 7819285 DOI: 10.1016/0167-4838(94)00197-o] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The CO-binding kinetics of cytochrome P-450cam(+) and P-450cam(-) have been measured in the millisecond time domain using a flash photolysis method. We have determined the reaction coordinates for free energy, enthalpy and entropy from the temperature dependence of the overall rate constants of the bimolecular forward (on) and backward (off) reactions. Comparing the thermodynamic profiles of P-450cam with that of myoglobin (Mb) reported so far, the enthalpy and the entropy coordinates exhibit the following remarkable characteristics. The CO-binding equilibrium: The stability of the CO-complex is perfectly entropy-driven for P-450cam, while enthalpy-driven for Mb. This entropy-driven feature for P-450cam is enhanced by the dissociating d-camphor. The on and off activation processes: The on and off reactions for P-450cam are dominantly controlled by the enthalpy and entropy terms, respectively, while those for Mb are rather the reverse of the case of P-450cam. The dissociation of d-camphor has a significant effect on the on reaction but no effect on the off reaction. Analyzing these thermodynamic features on the basis of the physical chemistry in the solution reaction, it was found that these characteristic profiles arise from the difference in the global structural change between the proteins. Namely, during the equilibrium process of the CO binding, this structural change is accompanied by a larger increase in the degree of freedom in P-450cam than in Mb. We discussed the correlations between the structural changes and their biological significance.
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Affiliation(s)
- M Kato
- Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
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Robinson CR, Sligar SG. Hydrostatic and osmotic pressure as tools to study macromolecular recognition. Methods Enzymol 1995; 259:395-427. [PMID: 8538464 DOI: 10.1016/0076-6879(95)59054-4] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Clearly, hydrostatic and osmotic pressure techniques offer unique potential in the study of fundamental problems of molecular recognition in biological systems. With the recent advances in technology such investigations are rapidly becoming commonplace. We look forward to further advances and their report in succeeding compendiums such as this volume.
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Affiliation(s)
- C R Robinson
- Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, USA
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Wakasugi K, Ishimori K, Imai K, Wada Y, Morishima I. “Module” substitution in hemoglobin subunits. Preparation and characterization of a “chimera beta alpha-subunit”. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)32232-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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