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Lehnert N, Kim E, Dong HT, Harland JB, Hunt AP, Manickas EC, Oakley KM, Pham J, Reed GC, Alfaro VS. The Biologically Relevant Coordination Chemistry of Iron and Nitric Oxide: Electronic Structure and Reactivity. Chem Rev 2021; 121:14682-14905. [PMID: 34902255 DOI: 10.1021/acs.chemrev.1c00253] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Nitric oxide (NO) is an important signaling molecule that is involved in a wide range of physiological and pathological events in biology. Metal coordination chemistry, especially with iron, is at the heart of many biological transformations involving NO. A series of heme proteins, nitric oxide synthases (NOS), soluble guanylate cyclase (sGC), and nitrophorins, are responsible for the biosynthesis, sensing, and transport of NO. Alternatively, NO can be generated from nitrite by heme- and copper-containing nitrite reductases (NIRs). The NO-bearing small molecules such as nitrosothiols and dinitrosyl iron complexes (DNICs) can serve as an alternative vehicle for NO storage and transport. Once NO is formed, the rich reaction chemistry of NO leads to a wide variety of biological activities including reduction of NO by heme or non-heme iron-containing NO reductases and protein post-translational modifications by DNICs. Much of our understanding of the reactivity of metal sites in biology with NO and the mechanisms of these transformations has come from the elucidation of the geometric and electronic structures and chemical reactivity of synthetic model systems, in synergy with biochemical and biophysical studies on the relevant proteins themselves. This review focuses on recent advancements from studies on proteins and model complexes that not only have improved our understanding of the biological roles of NO but also have provided foundations for biomedical research and for bio-inspired catalyst design in energy science.
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Affiliation(s)
- Nicolai Lehnert
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Eunsuk Kim
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Hai T Dong
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Jill B Harland
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Andrew P Hunt
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Elizabeth C Manickas
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Kady M Oakley
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - John Pham
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Garrett C Reed
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Victor Sosa Alfaro
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
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Dybas J, Berkowicz P, Proniewski B, Dziedzic-Kocurek K, Stanek J, Baranska M, Chlopicki S, Marzec KM. Spectroscopy-based characterization of Hb-NO adducts in human red blood cells exposed to NO-donor and endothelium-derived NO. Analyst 2019; 143:4335-4346. [PMID: 30109873 DOI: 10.1039/c8an00302e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The work presents the complementary approach to characterize the formation of various Hb species inside isolated human RBCs exposed to NO, with a focus on the formed Hb-NO adducts. This work presents a complementary approach based on Resonance Raman Spectroscopy (RRS) supported by Blood Gas Analysis, Electron Paramagnetic Resonance Spectroscopy, UV-Vis Absorption Spectroscopy and Mössbauer Spectroscopy to characterize the formation of various Hb species, with a focus on the Hb-NO adducts formed inside isolated human RBCs exposed to NO, under the experimental conditions of low and high levels of oxygen Hb saturation. In the present work, we induced Hb-NO adducts using PAPA-NONOate, a NO-donor with known chemistry and kinetics of NO release, and confirmed the formation of Hb-NO adducts in RBCs incubated with Human Aortic Endothelial Cells (HAECs) stimulated to produce NO. Our results provide a new insight into the formation of Hb-NO adducts after the exposure of RBCs with high oxyHb content to exogenous NO with special attention to the formation of LSHbIIINO in addition to LSHbIINO and metHb (HS/LSHbIIIH2O). We also point out that reliable characterization of Hb-NO adducts requires complementary techniques. Among them, RRS, as a label-free and non-destructive tool, appears to be an important discrimination technique in the studies of Hb-NO adducts inside intact RBCs.
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Affiliation(s)
- Jakub Dybas
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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Marzec KM, Dybas J, Chlopicki S, Baranska M. Resonance Raman in Vitro Detection and Differentiation of the Nitrite-Induced Hemoglobin Adducts in Functional Human Red Blood Cells. J Phys Chem B 2016; 120:12249-12260. [PMID: 27934219 DOI: 10.1021/acs.jpcb.6b08359] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This work presents in vitro studies of the functional, isolated human red blood cells (RBCs) treated with various concentrations of Na14NO2 and Na15NO2 with the use of resonance Raman spectroscopy (RRS) at two different laser excitations supported by absorption spectrophotometry (UV-vis). The products of the reaction between oxyhemoglobin (oxyHb) in isolated RBCs with NaNO2 were analyzed and identified in situ. The metHb-H2O was found to be the major product of this reaction; however, additional adducts were also clearly observed. Vibrational analysis allowed identification of various Hb3+NO2 species (Fe3+-O-N=O with O-binding mode of nitrite ion to the Fe3+ core and nitrovinyl adducts with 2-vinyl nitration favored over 4-vinyl nitration) as well as the Fe3+-NO adduct. In addition, we were able to visualize in situ the Hb-NO2 species inside functional RBCs with the use of Raman imaging.
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Affiliation(s)
- Katarzyna M Marzec
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University , Bobrzynskiego 14, Krakow 30-348, Poland
| | - Jakub Dybas
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University , Bobrzynskiego 14, Krakow 30-348, Poland.,Faculty of Chemistry, Jagiellonian University , Ingardena 3, Krakow 30-060, Poland
| | - Stefan Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University , Bobrzynskiego 14, Krakow 30-348, Poland.,Department of Experimental Pharmacology, Jagiellonian University Medical College , Grzegorzecka 16, Krakow 31-531, Poland
| | - Malgorzata Baranska
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University , Bobrzynskiego 14, Krakow 30-348, Poland.,Faculty of Chemistry, Jagiellonian University , Ingardena 3, Krakow 30-060, Poland
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Lehnert N, Scheidt WR, Wolf MW. Structure and Bonding in Heme–Nitrosyl Complexes and Implications for Biology. NITROSYL COMPLEXES IN INORGANIC CHEMISTRY, BIOCHEMISTRY AND MEDICINE II 2013. [DOI: 10.1007/430_2013_92] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Li P, Kong B, Chen Q, Zheng D, Liu N. Formation and identification of nitrosylmyoglobin by Staphylococcus xylosus in raw meat batters: a potential solution for nitrite substitution in meat products. Meat Sci 2012; 93:67-72. [PMID: 22926033 DOI: 10.1016/j.meatsci.2012.08.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 03/31/2012] [Accepted: 08/01/2012] [Indexed: 10/28/2022]
Abstract
Staphylococcus xylosus and Pediococcus pentosaceus isolated from Chinese dried sausage were assessed for their ability to convert metmyoglobin into nitrosylmyoglobin in Mann-Rogosa-Sharp broth model systems and raw pork meat batters without the addition of nitrite. The results showed that samples in model systems with S. xylosus cultures had an absorption spectra that is typical of nitrosylmyoglobin, an obvious pink colour (judged by visual inspection) and a significantly higher a-value than the control samples or samples inoculated with P. pentosaceus. In raw meat batters, the a-values of the S. xylosus samples were almost the same as those for the meat with nitrite added. The complementary analysis of meat batter samples by photochemical information from UV-vis, electron spin resonance and resonance Raman spectroscopy revealed that the existing status of the myoglobin in meat batters inoculated with S. xylosus was mainly pentacoordinate nitrosylmyoglobin. This study provides a potential solution for nitrite substitute in meat products.
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Affiliation(s)
- Peijun Li
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
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Conductivity by Electron Pairs. Chem Phys 2012. [DOI: 10.1201/b11524-20] [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]
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Hayashi T, Miner KD, Yeung N, Lin YW, Lu Y, Moënne-Loccoz P. Spectroscopic characterization of mononitrosyl complexes in heme--nonheme diiron centers within the myoglobin scaffold (Fe(B)Mbs): relevance to denitrifying NO reductase. Biochemistry 2011; 50:5939-47. [PMID: 21634416 DOI: 10.1021/bi200409a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Denitrifying NO reductases are evolutionarily related to the superfamily of heme--copper terminal oxidases. These transmembrane protein complexes utilize a heme-nonheme diiron center to reduce two NO molecules to N(2)O. To understand this reaction, the diiron site has been modeled using sperm whale myoglobin as a scaffold and mutating distal residues Leu-29 and Phe-43 to histidines and Val-68 to a glutamic acid to create a nonheme Fe(B) site. The impact of incorporation of metal ions at this engineered site on the reaction of the ferrous heme with one NO was examined by UV-vis absorption, EPR, resonance Raman, and FTIR spectroscopies. UV--vis absorption and resonance Raman spectra demonstrate that the first NO molecule binds to the ferrous heme, but while the apoproteins and Cu(I)- or Zn(II)-loaded proteins show characteristic EPR signatures of S = 1/2 six-coordinate heme {FeNO}(7) species that can be observed at liquid nitrogen temperature, the Fe(II)-loaded proteins are EPR silent at ≥30 K. Vibrational modes from the heme [Fe-N-O] unit are identified in the RR and FTIR spectra using (15)NO and (15)N(18)O. The apo and Cu(I)-bound proteins exhibit ν(FeNO) and ν(NO) that are only marginally distinct from those reported for native myoglobin. However, binding of Fe(II) at the Fe(B) site shifts the heme ν(FeNO) by 17 cm(-1) and the ν(NO) by -50 cm(-1) to 1549 cm(-1). This low ν(NO) is without precedent for a six-coordinate heme {FeNO}(7) species and suggests that the NO group adopts a strong nitroxyl character stabilized by electrostatic interaction with the nearby nonheme Fe(II). Detection of a similarly low ν(NO) in the Zn(II)-loaded protein supports this interpretation.
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Affiliation(s)
- Takahiro Hayashi
- Division of Environmental and Biomolecular Systems, Oregon Health and Science University, Beaverton, Oregon 97006, United States
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Lehnert N, Sage JT, Silvernail N, Scheidt WR, Alp EE, Sturhahn W, Zhao J. Oriented single-crystal nuclear resonance vibrational spectroscopy of [Fe(TPP)(MI)(NO)]: quantitative assessment of the trans effect of NO. Inorg Chem 2010; 49:7197-215. [PMID: 20586416 PMCID: PMC2917100 DOI: 10.1021/ic1010677] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper presents oriented single-crystal Nuclear Resonance Vibrational Spectroscopy (NRVS) data for the six-coordinate (6C) ferrous heme-nitrosyl model complex [(57)Fe(TPP)(MI)(NO)] (1; TPP(2-) = tetraphenylporphyrin dianion; MI = 1-methylimidazole). The availability of these data enables for the first time the detailed simulation of the complete NRVS data, including the porphyrin-based vibrations, of a 6C ferrous heme-nitrosyl, using our quantum chemistry centered normal coordinate analysis (QCC-NCA). Importantly, the Fe-NO stretch is split by interaction with a porphyrin-based vibration into two features, observed at 437 and 472 cm(-1). The 437 cm(-1) feature is strongly out-of-plane (oop) polarized and shows a (15)N(18)O isotope shift of 8 cm(-1) and is therefore assigned to nu(Fe-NO). The admixture of Fe-N-O bending character is small. Main contributions to the Fe-N-O bend are observed in the 520-580 cm(-1) region, distributed over a number of in-plane (ip) polarized porphyrin-based vibrations. The main component, assigned to delta(ip)(Fe-N-O), is identified with the feature at 563 cm(-1). The Fe-N-O bend also shows strong mixing with the Fe-NO stretching internal coordinate, as evidenced by the oop NRVS intensity in the 520-580 cm(-1) region. Very accurate normal mode descriptions of nu(Fe-NO) and delta(ip)(Fe-N-O) have been obtained in this study. These results contradict previous interpretations of the vibrational spectra of 6C ferrous heme-nitrosyls where the higher energy feature at approximately 550 cm(-1) had usually been associated with nu(Fe-NO). Furthermore, these results provide key insight into NO binding to ferrous heme active sites in globins and other heme proteins, in particular with respect to (a) the effect of hydrogen bonding to the coordinated NO and (b) changes in heme dynamics upon NO coordination. [Fe(TPP)(MI)(NO)] constitutes an excellent model system for ferrous NO adducts of myoglobin (Mb) mutants where the distal histidine (His64) has been removed. Comparison to the reported vibrational data for wild-type (wt) Mb-NO then shows that the effect of H bonding to the coordinated NO is weak and mostly leads to a polarization of the pi/pi* orbitals of bound NO. In addition, the observation that delta(ip)(Fe-N-O) does not correlate well with nu(N-O) can be traced back to the very mixed nature of this mode. The Fe-N(imidazole) stretching frequency is observed at 149 cm(-1) in [Fe(TPP)(MI)(NO)], and spectral changes upon NO binding to five-coordinate ferrous heme active sites are discussed. The obtained high-quality force constants for the Fe-NO and N-O bonds of 2.57 and 11.55 mdyn/A can further be compared to those of corresponding 5C species, which allows for a quantitative analysis of the sigma trans interaction between the proximal imidazole (His) ligand and NO. This is key for the activation of the NO sensor soluble guanylate cyclase. Finally, DFT methods are calibrated against the experimentally determined vibrational properties of the Fe-N-O subunit in 1. DFT is in fact incapable of reproducing the vibrational energies and normal mode descriptions of the Fe-N-O unit well, and thus, DFT-based predictions of changes in vibrational properties upon heme modification or other perturbations of these 6C complexes have to be treated with caution.
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Affiliation(s)
- Nicolai Lehnert
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - J. Timothy Sage
- Department of Physics and Center for Interdisciplinary Research on Complex Systems, Northeastern University, Boston, MA 02115, USA
| | - Nathan Silvernail
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - W. Robert Scheidt
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - E. Ercan Alp
- Argonne National Laboratory, APS/XFD, 431/D003, Argonne, IL 60439, USA
| | - Wolfgang Sturhahn
- Argonne National Laboratory, APS/XFD, 431/D003, Argonne, IL 60439, USA
| | - Jiyong Zhao
- Argonne National Laboratory, APS/XFD, 431/D003, Argonne, IL 60439, USA
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Goodrich LE, Paulat F, Praneeth VKK, Lehnert N. Electronic Structure of Heme-Nitrosyls and Its Significance for Nitric Oxide Reactivity, Sensing, Transport, and Toxicity in Biological Systems. Inorg Chem 2010; 49:6293-316. [DOI: 10.1021/ic902304a] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Lauren E. Goodrich
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - Florian Paulat
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - V. K. K. Praneeth
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - Nicolai Lehnert
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
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Ibrahim M, Xu C, Spiro TG. Differential sensing of protein influences by NO and CO vibrations in heme adducts. J Am Chem Soc 2006; 128:16834-45. [PMID: 17177434 PMCID: PMC2530899 DOI: 10.1021/ja064859d] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Heme proteins bind the gaseous ligands XO (X = C, N, O) via backbonding from Fe d(pi) electrons. Backbonding is modulated by distal interactions of the bound ligand with the surrounding protein and by variations in the strength of the trans proximal ligand. Vibrational modes associated with FeX and XO bond stretching coordinates report on these interactions, but the interpretive framework developed for CO adducts, involving anticorrelations of nuFeC and nuCO, has seemed not to apply to NO adducts. We have now obtained an excellent anticorrelation of nuFeN and nuNO, via resonance Raman spectroscopy on (N-methylimidazole)Fe(II)TPP-Y(NO), where TPP-Y is tetraphenylporphine with electron-donating or -withdrawing substituents, Y, that modulate the backbonding; the problem of laser-induced dissociation of the axial base was circumvented by using frozen solutions. New data are also reported for CO adducts. The anticorrelations are supported by DFT calculations of structures and spectra. When protein data are examined, the NO adducts show large deviations from the modeled anticorrelation when there are distal H-bonds or positive charges. These deviations are proposed to result from closing of the FeNO angle due to a shift in the valence isomer equilibrium toward the Fe(III)(NO-) form, an effect that is absent in CO adducts. The differing vibrational patterns of CO and NO adducts provide complementary information with respect to protein interactions, which may help to elucidate the mechanisms of ligand discrimination and signaling in heme sensor proteins.
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Affiliation(s)
- Mohammed Ibrahim
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - Changliang Xu
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - Thomas G. Spiro
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
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12
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Zhu J, Wang J, Stell G. Ligand reorganization and activation energies in nonadiabatic electron transfer reactions. J Chem Phys 2006; 125:164511. [PMID: 17092109 DOI: 10.1063/1.2361285] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The activation energy and ligand reorganization energy for nonadiabatic electron transfer reactions in chemical and biological systems are investigated in this paper. The free energy surfaces and the activation energy are derived exactly in the general case in which the ligand vibration frequencies are not equal. The activation energy is derived by free energy minimization at the transition state. Our formulation leads to the Marcus-Hush [J. Chem. Phys. 24, 979 (1956); 98, 7170 (1994); 28, 962 (1958)] results in the equal-frequency limit and also generalizes the Marcus-Sumi [J. Chem. Phys. 84, 4894 (1986)] model in the context of studying the solvent dynamic effect on electron transfer reactions. It is found that when the ligand vibration frequencies are different, the activation energy derived from the Marcus-Hush formula deviates by 5%-10% from the exact value. If the reduced reorganization energy approximation is introduced in the Marcus-Hush formula, the result is almost exact.
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Affiliation(s)
- Jianjun Zhu
- Department of Chemistry, Henan Normal University, Xinxiang, People's Republic of China.
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Shi Q, Cai WB, Scherson DA. In Situ Surface-Enhanced Raman Scattering Studies of the Nitrosyl Adduct of Hemin Adsorbed on Roughened Silver Surfaces in Aqueous Electrolytes. J Phys Chem B 2004. [DOI: 10.1021/jp046102j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qingfang Shi
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078
| | - Wen-Bin Cai
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078
| | - Daniel A. Scherson
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078
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Nöllmann M, Etchegoin P. Photoinduced oxygen dynamics in lyophilized hemoglobin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2000; 56:2817-2829. [PMID: 11145349 DOI: 10.1016/s1386-1425(00)00384-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Reversible laser induced deoxygenation in the lyophilized phase of hemoglobin is demonstrated by means of resonant Raman scattering, luminescence, and optical transmission. Specific Raman modes, which are both sensitive to the spin states of Fe(II) in the hemes and resonant in the visible, are monitored as a function of time to evaluate the effect of the illuminating laser. These modes act as in-situ markers of the oxygen content of the protein. The reversible photoinduced deoxygenation can be observed through both the Raman spin-markers and the optical transmission experiments. In the former, reversible changes in the intensities of specific Raman modes are observed, while in the latter, the oscillator strength of the two main absorptions of oxyhemoglobin in the visible are seen to vary accordingly. The luminescence in lyophilized hemoglobin is found to have at least two different contributions, (i) a resonant component with the Raman modes and; (ii) a nonresonant contribution, which increases at high input laser powers and eventually masks the Raman signals. The nonresonant contribution is the luminescence of the photoproduct achieved by thermal denaturation of the protein and remains standing as a permanent nonreversible damage in the illuminated spot. Semiempirical electronic calculations of the wavefunction and total energy of the iron porphyrin reveal the underlying physical origin of the laser induced deoxygenation process in the hemes and are also presented.
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Affiliation(s)
- M Nöllmann
- Instituto Balseiro, Universidad Nacional de Cuyo, San Carlos de Bariloche, Río Negro, Argentina
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Rich AM, Ellis PJ, Tennant L, Wright PE, Armstrong RS, Lay PA. Determination of Fe-ligand bond lengths and the Fe-N-O bond angles in soybean ferrous and ferric nitrosylleghemoglobin a using multiple-scattering XAFS analyses. Biochemistry 1999; 38:16491-9. [PMID: 10600110 DOI: 10.1021/bi990730n] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The NO adducts of leghemoglobin (Lb) are implicated in biological processes, but only the adduct with ferrous Lb (Lb(II)NO) has been characterized previously. We report the first characterization of ferric nitrosylleghemoglobin (Lb(III)NO) and XAS experiments performed on frozen aqueous solutions of Lb(II)NO and Lb(III)NO at 10 K. The XANES and electronic spectra of the NO adducts are similar in shape and energies to the myoglobin (Mb) analogues. The environment of the Fe atom has been refined using multiple-scattering (MS) analyses of the XAFS data. For Lb(II)NO, the MS analysis resulted in an averaged Fe-N(p)(pyrrole) distance of 2.02 A, an Fe-N(epsilon)(imidazole) distance of 1.98 A, an Fe-N(NO) distance of 1.77 A, and an Fe-N-O angle of 147 degrees. The Fe-N(NO) distance and Fe-N-O angle obtained from the analysis of Lb(II)NO are in good agreement with those determined crystallographically for [Fe(TPP)(NO)] (TPP, tetraphenylporphyrinato), with and without 1-methylimidazole (1-MeIm) as the sixth ligand, and the MS XAFS structures reported previously for the myoglobin (Mb(II)NO) analogue and [Fe(TPP)(NO)]. The MS analysis of Lb(III)NO yielded an average Fe-N(p) distance of 2.00 A, an Fe-N(epsilon) distance of 1.89 A, an Fe-N(NO) distance of 1.68 A, and an Fe-N-O angle of 173 degrees. These bond lengths and angles are consistent with those determined previously for the myoglobin analogue (Mb(III)NO) and the crystal structures of the model complexes, [Fe(III)(TPP)(NO)(OH(2))](+) and [Fe(OEP)(NO)](+) (OEP, octaethylporphyrinato). The final XAFS R values were 16.1 and 18.2% for Lb(II)NO and Lb(III)NO, respectively.
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Affiliation(s)
- A M Rich
- School of Chemistry, University of Sydney, New South Wales, Australia
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Rich AM, Armstrong RS, Ellis PJ, Lay PA. Determination of the Fe−Ligand Bond Lengths and Fe−N−O Bond Angles in Horse Heart Ferric and Ferrous Nitrosylmyoglobin Using Multiple-Scattering XAFS Analyses. J Am Chem Soc 1998. [DOI: 10.1021/ja980253g] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anne M. Rich
- Contribution from the School of Chemistry, University of Sydney, New South Wales 2006, Australia
| | - Robert S. Armstrong
- Contribution from the School of Chemistry, University of Sydney, New South Wales 2006, Australia
| | - Paul J. Ellis
- Contribution from the School of Chemistry, University of Sydney, New South Wales 2006, Australia
| | - Peter A. Lay
- Contribution from the School of Chemistry, University of Sydney, New South Wales 2006, Australia
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Furutachi H, Okawa H. Dioxygen Oxidation of Coordinated Nitrosyl to Nitro on Dmf-Bridged Dinuclear CoPb Complex. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1998. [DOI: 10.1246/bcsj.71.671] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Chance MR, Miller LM, Fischetti RF, Scheuring E, Huang WX, Sclavi B, Hai Y, Sullivan M. Global mapping of structural solutions provided by the extended X-ray absorption fine structure ab initio code FEFF 6.01: structure of the cryogenic photoproduct of the myoglobin-carbon monoxide complex. Biochemistry 1996; 35:9014-23. [PMID: 8703904 DOI: 10.1021/bi9605503] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
X-ray methods based on synchrotron technology have the promise of providing time-resolved structural data based on the high flux and brightness of the X-ray beams. One of the most closely examined problems in this area of time-resolved structure determination has been the examination of intermediates in ligand binding to myoglobin. Recent crystallographic experiments using synchrotron radiation have identified the protein tertiary and heme structural changes that occur upon photolysis of the myoglobin--carbon monoxide complex at cryogenic temperatures [Schlichting, I., Berendzen, J., Phillips, G., & Sweet, R. (1994) Nature 371, 808--812]. However, the precision of protein crystallographic data (approximately 0.2 A) is insufficient to provide precise metrical details of the iron--ligand bond lengths. Since bond length changes on this scale can trigger reactivity changes of several orders of magnitude, such detail is critical to a full understanding of metalloprotein structure--function relationships. Extended X-ray absorption fine structure (EXAFS) spectroscopy has the potential for analyzing bond distances to a precision of 0.02 A but is hampered by its relative insensitivity to the geometry of the backscattering atoms. Thus, it is often unable to provide a unique solution to the structure without ancillary structural information. We have developed a suite of computer programs that incorporate this ancillary structural information and compute the expected experimental spectra for a wide ranging series of Cartesian coordinate sets (global mapping). The programs systematically increment the distance of the metal to various coordinating ligands (along with their associated higher shells). Then, utilizing the ab initio EXAFS code FEFF 6.01, simulated spectra are generated and compared to the actual experimental spectra, and the differences are computed. Finally, the results for hundreds of simulations can be displayed (and compared) in a single plot. The power of this approach is demonstrated in the examination of high signal to noise EXAFS data from a photolyzed solution sample of the myoglobin--carbon monoxide complex at 10 K. Evaluation of these data using our global mapping procedures placed the iron to pyrrole nitrogen average distances close to the value for deoxymyoglobin (2.05 +/- 0.01 A), while the distance from iron to the proximal histidine nitrogen is seen to be 2.20 +/- 0.04 A. It is also shown that one cannot uniquely position the CO ligand on the basis of the EXAFS data alone, as a number of reasonable minima (from the perspective of the EXAFS) are observed. This provides a reasonable explanation for the multiplicity of solutions that have been previously reported. The results presented here are seen to be in complete agreement with the crystallographic results of Schlichting et al. (1994) within the respective errors of the two techniques; however, the extended X-ray absorption fine structure data allow the iron--ligand bond lengths to be precisely defined. An examination of the available spectroscopic data, including EXAFS, shows that the crystallographic results of Schlichting et al. (1994) are highly relevant to the physiological solution state and must be taken into account in any attempt to understand the incomplete relaxation process of the heme iron for the Mb*CO photoproduct at low temperature.
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Affiliation(s)
- M R Chance
- Department of Physiology and Biophysics, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York 10461, USA
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Affiliation(s)
- E V Arnold
- Department of Chemistry, University of Wyoming, Laramie, 82071, USA
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Fanning JC. The interaction of iron complexes with small nitrogen-containing molecules and ions. Coord Chem Rev 1991. [DOI: 10.1016/0010-8545(91)80007-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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The electrochemistry of iron porphyrin nitrosyls in the presence of pyridines and amines. Inorganica Chim Acta 1988. [DOI: 10.1016/s0020-1693(00)83352-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rousseau DL, Singh S, Ching YC, Sassaroli M. Nitrosyl cytochrome c oxidase. Formation and properties of mixed valence enzyme. J Biol Chem 1988. [DOI: 10.1016/s0021-9258(18)60619-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Owens JW, O'Connor CJ. Comparison of the electronic and vibrational spectra of complexes of protoporphyrin-IX, hemeoctapeptide, and heme proteins. Coord Chem Rev 1988. [DOI: 10.1016/0010-8545(88)80030-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Spiro TG. Resonance Raman spectroscopy as a probe of heme protein structure and dynamics. ADVANCES IN PROTEIN CHEMISTRY 1985; 37:111-59. [PMID: 2998161 DOI: 10.1016/s0065-3233(08)60064-9] [Citation(s) in RCA: 104] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Our understanding of metalloporphyrin resonance Raman spectra has advanced to the point where it is possible to obtain detailed information about the structure of the heme group in situ in heme proteins. The porphyrin skeletal mode frequencies can be analyzed in terms of the ligation and spin state of the heme and may provide information about protein-induced stresses. The high-frequency region of the spectrum also contains bands due to vibrations of the porphyrin peripheral substituents, which are potentially monitors of the protein contacts. In the low-frequency region, it is possible to locate bands, at least in some states of the heme protein, which are associated with vibrations of the axial ligands. They give direct information about the nature of the bonding to exogenous ligands or to the proximal protein residue. Thus, a variety of evidence is potentially available in the resonance Raman spectra from which a fairly complete picture of the heme site can be assembled for a particular protein in its various functional states. Detailed studies have been pursued for paradigmatic heme proteins, including myoglobin, hemoglobin, cytochrome c, horseradish peroxidase, and cytochrome oxidase. These studies provide a substantial data base from which the exploration of lesser known systems can be launched. Another extension of current knowledge to new frontiers is in the time domain, since pulsed lasers now make it feasible to carry out time-resolved resonance Raman studies on heme protein reactions. Time-resolved resonance Raman spectroscopy is capable of elucidating the temporal evolution of heme structure and provides a link between heme chemistry and protein dynamics. This link is being elucidated for hemoglobin and cytochrome c, where specific heme intermediates have been identified following ligand photodissociation or electron transfer.
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Terner J, Reed DE. Resonance raman spectroscopic characterization of the heme coordination and spin state in the alkaline form of horseradis peroxidase. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0167-4838(84)90064-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Yoshimura T, Ozaki T. Electronic spectra for nitrosyl(protoporphyrin IX dimethyl ester)iron(II) and its complexes with nitrogenous bases as model systems for nitrosylhemoproteins. Arch Biochem Biophys 1984; 229:126-35. [PMID: 6703691 DOI: 10.1016/0003-9861(84)90137-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Soret and visible absorption spectra for nitrosyl(protoporphyrin IX dimethyl ester)iron(II) (Fe(PPIXDME)(NO] and its complexes with nitrogenous bases (imidazoles, pyridines, aliphatic amines, and cyclic secondary amines) as model systems for nitrosylhemoproteins have been measured in various solvents. As the solvent polarity increases, the Soret and visible absorption bands for the five-coordinate Fe(PPIXDME) (NO) were shifted to shorter wavelengths. Accompanying the coordination of a nitrogenous base to the vacant axial position of Fe(PPIXDME)(NO), the Soret band becomes sharp and the band maximum is shifted to longer wavelengths. The band positions for the six-coordinate Fe(PPIXDME)(NO)(Base) complex are not sensitive to the pi-bonding ability of the axial ligand trans to NO group. The electronic spectra of five-coordinate Fe(PPIXDME)(NO) and six-coordinate Fe(PPIXDME)(NO)(Base) complexes are interpreted in relation to the structural information. The comparison of the spectra for model systems with those for nitrosylhemoproteins is discussed.
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Yoshimura T. Infrared and electron paramagnetic resonance study of nitrosyl(protoporphyrin IX dimethyl ester)iron(II) and its complexes with nitrogenous bases as model systems for nitrosylhemoproteins: effect of solvent polarity. Arch Biochem Biophys 1983; 220:167-78. [PMID: 6299196 DOI: 10.1016/0003-9861(83)90397-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Infrared and electron paramagnetic resonance spectra of nitrosyl(protoporphyrin IX dimethyl ester)iron(II)(Fe(PPDME)(NO)) and its complexes with nitrogenous bases (N bases) such as imidazoles, pyridines, aliphatic amines, and anilines have been measured in various solvents. At room temperature, giso, Aiso, and nu NO values of five-coordinate Fe(PPDME)(NO) decreased with an increase in solvent polarity parameter ET, indicating the interaction between the solvent and the vacant axial coordination position. It has been found that the nu NO value of six-coordinate species is very sensitive to the solvent polarity, while the giso value is less sensitive. The solvent effect on the equilibrium constants, which are evaluated from the intensity change of the NO stretching band for five- and six-coordinate species, is discussed.
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Zimmer J, Van Wart HE. Resonance Raman spectrum of horseradish peroxidase compound III: comparison with oxyhemoglobin. Biochem Biophys Res Commun 1982; 108:977-81. [PMID: 7181897 DOI: 10.1016/0006-291x(82)92095-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Perutz MF. Nature of the iron-oxygen bond and control of oxygen affinity of the haem by the structure of the globin in haemoglobin. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1982; 148:31-48. [PMID: 7124526 DOI: 10.1007/978-1-4615-9281-5_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Spectroscopic and chemical evidence speak in favour of the iron-oxygen bond being polar. X-ray analysis shows that the oxygen molecule is inclined at an angle of about 115 degrees to the haem plane. Cooperative binding of oxygen by haemoglobin is attributable to an equilibrium between two alternative structures that differ in oxygen affinity by the equivalent of 3-3.5 kcal/mol. The author has proposed that in the low-affinity structure the globin opposes the movement of the iron atom from its pentacoordinated pyramidal geometry in the haem of deoxyhaemoglobin to its hexacoordinated planar geometry in the haem of oxyhaemoglobin, while in the high-affinity structure this restraint is absent. Recent evidence supporting this mechanism is described.
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Desbois A, Lutz M, Banerjee R. Protoheme conformations in low-spin ferrohemoproteins. Resonance Raman spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA 1981; 671:184-92. [PMID: 7198917 DOI: 10.1016/0005-2795(81)90133-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The low-frequency regions of resonance Raman spectra of various low-spin ferrous forms of normal human hemoglobin, soybean leghemoglobin alpha and of horse myoglobin are reported. Differences observed among the spectra of oxygenated and nitrosyl forms of these hemoproteins show that their globins impose various low-spin heme structures. A quantitative correlation between the variable frequency of resonance Raman band II (215-271 cm-1) and the iron atom-heme plane distance was observed for hemoproteins and heme models, either ferrous or ferric, high-spin or low-spin. From this correlation, the iron atom-heme plane distance should be 0.3 A in nitrosyl and oxymyoglobin (band II at 256 cm-1) whereas the iron position should be near to or in the heme plane for nitrosyl and oxy forms of hemoglobin and leghemoglobin (band II between 266 and 273 cm-1). A new method is proposed for monitoring the photodissociation processes in ferrohemoproteins.
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