51
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Czarnecki K, Proniewicz LM, Fujii H, Ji D, Czernuszewicz RS, Kincaid JR. Insensitivity of Vanadyl−Oxygen Bond Strengths to Radical Type (2A1u vs 2A2u) in Vanadyl Porphyrin Cation Radicals. Inorg Chem 1999. [DOI: 10.1021/ic981369g] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazimierz Czarnecki
- Chemistry Department; Marquette University, Milwaukee, Wisconsin 53233, Chemical Physics Division, Department of Chemistry, and Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland, Institute for Molecular Science, Okazaki National Research Institutes, Okazaki 444, Japan, and Chemistry Department, University of Houston, Houston, Texas 77004
| | - Leonard M. Proniewicz
- Chemistry Department; Marquette University, Milwaukee, Wisconsin 53233, Chemical Physics Division, Department of Chemistry, and Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland, Institute for Molecular Science, Okazaki National Research Institutes, Okazaki 444, Japan, and Chemistry Department, University of Houston, Houston, Texas 77004
| | - Hiroshi Fujii
- Chemistry Department; Marquette University, Milwaukee, Wisconsin 53233, Chemical Physics Division, Department of Chemistry, and Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland, Institute for Molecular Science, Okazaki National Research Institutes, Okazaki 444, Japan, and Chemistry Department, University of Houston, Houston, Texas 77004
| | - David Ji
- Chemistry Department; Marquette University, Milwaukee, Wisconsin 53233, Chemical Physics Division, Department of Chemistry, and Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland, Institute for Molecular Science, Okazaki National Research Institutes, Okazaki 444, Japan, and Chemistry Department, University of Houston, Houston, Texas 77004
| | - Roman S. Czernuszewicz
- Chemistry Department; Marquette University, Milwaukee, Wisconsin 53233, Chemical Physics Division, Department of Chemistry, and Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland, Institute for Molecular Science, Okazaki National Research Institutes, Okazaki 444, Japan, and Chemistry Department, University of Houston, Houston, Texas 77004
| | - James R. Kincaid
- Chemistry Department; Marquette University, Milwaukee, Wisconsin 53233, Chemical Physics Division, Department of Chemistry, and Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland, Institute for Molecular Science, Okazaki National Research Institutes, Okazaki 444, Japan, and Chemistry Department, University of Houston, Houston, Texas 77004
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52
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Kozlowski PM, Rush TS, Jarzecki AA, Zgierski MZ, Chase B, Piffat C, Ye BH, Li XY, Pulay P, Spiro TG. DFT-SQM Force Field for Nickel Porphine: Intrinsic Ruffling. J Phys Chem A 1999. [DOI: 10.1021/jp9819700] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pawel M. Kozlowski
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Thomas S. Rush
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Andrzej A. Jarzecki
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Marek Z. Zgierski
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Bruce Chase
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Christine Piffat
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Bao-Hui Ye
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Xiao-Yuan Li
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Peter Pulay
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
| | - Thomas G. Spiro
- Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6, DuPont Experimental Station, Wilmington, Delaware 19880, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China, and Department of Chemistry, University of Arkansas,
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53
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Keating CD, Kovaleski KM, Natan MJ. Protein:Colloid Conjugates for Surface Enhanced Raman Scattering: Stability and Control of Protein Orientation. J Phys Chem B 1998. [DOI: 10.1021/jp982723z] [Citation(s) in RCA: 168] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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54
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Uesugi Y, Mizutani Y, Kitagawa T. Photoinduced Solvent Ligation to Nickel(II) Octaethylporphyrin Probed by Picosecond Time-Resolved Resonance Raman Spectroscopy. J Phys Chem A 1998. [DOI: 10.1021/jp981277c] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuki Uesugi
- School of Mathematical and Physical Science, The Graduate University for Advanced Studies and Institute for Molecular Science, Okazaki National Research Institutes, Myodaiji, Okazaki 444, Japan
| | - Yasuhisa Mizutani
- School of Mathematical and Physical Science, The Graduate University for Advanced Studies and Institute for Molecular Science, Okazaki National Research Institutes, Myodaiji, Okazaki 444, Japan
| | - Teizo Kitagawa
- School of Mathematical and Physical Science, The Graduate University for Advanced Studies and Institute for Molecular Science, Okazaki National Research Institutes, Myodaiji, Okazaki 444, Japan
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55
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Song XZ, Jaquinod L, Jentzen W, Nurco DJ, Jia SL, Khoury RG, Ma JG, Medforth CJ, Smith KM, Shelnutt JA. Metal Dependence of the Contributions of Low-Frequency Normal Coordinates to the Sterically Induced Distortions of Meso-Dialkyl-Substituted Porphyrins. Inorg Chem 1998. [DOI: 10.1021/ic970465z] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xing-Zhi Song
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Laurent Jaquinod
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Walter Jentzen
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Daniel J. Nurco
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Song-Ling Jia
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Richard G. Khoury
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Jian-Guo Ma
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Craig J. Medforth
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - Kevin M. Smith
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
| | - John A. Shelnutt
- Materials Theory and Computation Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1349, Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131, and Department of Chemistry, University of California, Davis, California 95616
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56
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Electron transfer photosensitized by a tin lipoporphyrin in solution, micelles, and at water—organic solvent interfaces. J Photochem Photobiol A Chem 1998. [DOI: 10.1016/s1010-6030(97)00322-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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57
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Arnold PA, Benson DR, Brink DJ, Hendrich MP, Jas GS, Kennedy ML, Petasis DT, Wang M. Helix Induction and Springboard Strain in Peptide-Sandwiched Mesohemes1. Inorg Chem 1997. [DOI: 10.1021/ic960444p] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paige A. Arnold
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - David R. Benson
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - Daniel J. Brink
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - Michael P. Hendrich
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - Gouri S. Jas
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - Michelle L. Kennedy
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - Doros T. Petasis
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - Manxue Wang
- Departments of Chemistry, University of Kansas, Lawrence, Kansas 66045, and Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
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58
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Cohen JD, Bao W, Renganathan V, Subramaniam SS, Loehr TM. Resonance Raman spectroscopic studies of cellobiose dehydrogenase from Phanerochaete chrysosporium. Arch Biochem Biophys 1997; 341:321-8. [PMID: 9169022 DOI: 10.1006/abbi.1997.9987] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Cellobiose dehydrogenase (CDH), an extracellular hemoflavoenzyme produced by cellulose-degrading cultures of Phanerochaete chrysosporium, oxidizes cellobiose to cellobionolactone. The enzyme contains one 6-coordinate, low-spin b-type heme and one FAD cofactor per monomeric protein. In this work, resonance Raman (RR) spectra are reported for the oxidized, reduced, and deflavo forms of CDH as well as the individual flavin and heme domains of the enzyme obtained by peptide proteolysis. The RR spectra of the flavin and heme groups of CDH were assigned by comparison to the spectra of other hemoflavoenzymes and model compounds. Proteolytic cleavage of the CDH domains had only a minimal spectroscopic effect on the vibrational modes of the heme and FAD cofactors. Excitation of the oxidized CDH holoenzyme at 413 or 442 nm resulted in photoreduction of the heme. However, the same excitation wavelength used on the deflavo form of the enzyme or on the heme domain alone did not cause photoreduction, indicating that photoinitiated electron transfer requires the FAD cofactor. These observations suggest an enzymatic mechanism whereby reducing equivalents obtained from the oxidation of cellobiose are transferred from the FAD to the heme. A similar mechanism has been proposed for flavocytochrome b2 of Saccharomyces cerevisiae which oxidizes lactate to pyruvate (A. Desbois et al., 1989, Biochemistry 28, 8011-8022).
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Affiliation(s)
- J D Cohen
- Department of Chemistry, Biochemistry, and Molecular Biology, Oregon Graduate Institute of Science and Technology, Portland 97291-1000, USA
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59
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Lukat-Rodgers GS, Rodgers KR. Characterization of ferrous FixL-nitric oxide adducts by resonance Raman spectroscopy. Biochemistry 1997; 36:4178-87. [PMID: 9100012 DOI: 10.1021/bi9628230] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Resonance Raman spectra of the nitric oxide adducts of the ferrous forms of two soluble truncations of Rhizobium meliloti FixL, FixL* and FixLN, are reported. At room temperature, four isotope sensitive vibrations are observed for both ferrous FixL*-NO and ferrous FixLN-NO. For FixL*-NO, they are observed at 558, 525, 450, and 1675 cm(-1) and are assigned to v(Fe-NO) of a six-coordinate nitrosyl adduct, v(Fe-NO) of a five-coordinate nitrosyl adduct, delta(Fe-NO) of a six-coordinate nitrosyl adduct, and v(N-O) of a five-coordinate nitrosyl adduct, respectively. Similar frequencies are observed for the FixLN-NO isotope sensitive bands. On the basis of the frequencies and spectral separation of the v(Fe-NO) and delta(Fe-NO) modes, the Fe-N-O unit is concluded to have a bent geometry similar to those observed for the nitrosyl adducts of ferrous hemoglobin and myoglobin. Both proteins can be converted to predominantly five-coordinate nitrosyl adducts by lowering the temperature. In low-temperature resonance Raman spectra of FixL*-NO and FixLN-NO, the 558 cm(-1) bands are significantly decreased in intensity and v(Fe-NO)5-c (the Fe-NO stretching vibration for the five-coordinate nitrosyl adduct) is observed at 529 and 526 cm(-1), respectively. Analysis of the v3 and v8 vibrations for these nitrosyl adducts also supports the presence of both five- and six-coordinate nitrosyl adducts of FixL* and FixLN at room temperature and the conversion to predominantly five-coordinate nitrosyl adducts at low temperatures. This temperature-dependent interconversion is reversible. The possible physiological relevance of the thermally accessible five-coordinate state is discussed. The width of v(Fe-NO)6-c at half-height is 1.3 times broader in FixLN-NO than in FixL*-NO, suggesting that the Fe-N-O geometry is more homogeneous in FixL*-NO. In low-temperature spectra of FixLN-NO, a second v(N-O)5-c band is observed, indicating that more than one conformation is attainable in the five-coordinate FixLN-NO. This second v(N-O)5-c is not observed for five-coordinate FixL*-NO, further suggesting a more conformationally restricted nitrosyl heme in FixL*. These variations in the vibrations involving the Fe-NO unit indicate that the kinase domain influences the heme structure. The spectral differences are discussed in terms of the interdomain interactions that result in ligation-dependent mediation of the kinase activity.
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Affiliation(s)
- G S Lukat-Rodgers
- Department of Chemistry, North Dakota State University, Fargo 58105, USA
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60
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Akins DL, Özçelik S, Zhu HR, Guo C. Fluorescence Decay Kinetics and Structure of Aggregated Tetrakis(p-Sulfonatophenyl)Porphyrin. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp961013v] [Citation(s) in RCA: 152] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel L. Akins
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Serdar Özçelik
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Han-Ru Zhu
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Chu Guo
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
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61
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An in-situ Raman study of the effect of the support for adsorbed iridium-chelates in catalysing oxygen reduction. J Electroanal Chem (Lausanne) 1996. [DOI: 10.1016/0022-0728(95)04420-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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62
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Picosecond time-resolved resonance Raman spectroscopy of the charge separated state of Mg-free base diporphyrins. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00042-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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63
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Abstract
This paper provides an overview of the usefulness of the resonance Raman (RR) spectroscopy in the determination of the structural and electronic properties of heme(s) included in c-type cytochromes. It reviews the mode assignments presently available for heme c and includes recent RR data on the most important subclasses of c-type cytochromes. It also describes the effects of cytochrome c-oxidase and cytochrome c-reductase associations on the heme vibrational modes of the bound cytochrome c.
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Affiliation(s)
- A Desbois
- Département de Biologie Cellulaire et Moléculaire, Centre d'Etudes de Saclay, Gif-sur-Yvette, France
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64
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Affiliation(s)
- Y Wang
- George R. Harrison, Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge 02139
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65
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66
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Bovill AJ, McConnell AA, Rospendowski BN, Smith WE. Overtone and combination band Raman spectra of α-copper phthalocyanine. ACTA ACUST UNITED AC 1992. [DOI: 10.1039/ft9928800455] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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67
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Hildebrandt P, Pielak GJ, Williams RJ. Structural studies of yeast iso-1 cytochrome c mutants by resonance Raman spectroscopy. EUROPEAN JOURNAL OF BIOCHEMISTRY 1991; 201:211-6. [PMID: 1655427 DOI: 10.1111/j.1432-1033.1991.tb16276.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The Ser82 and Phe82 variants of yeast iso-1 cytochrome c were studied by resonance Raman spectroscopy. In both oxidation states, distinct spectral changes were observed for some of those bands in the low-frequency region, which sensitively respond to conformational perturbations of the protein environment of the heme. These bands can be assigned to modes which include strong contributions of vibrations largely localized in the propionate-carrying pyrrole rings A and D. This indicates structural differences in the deeper part of the heme crevice, remote from the mutation site. This conclusion is in line with previous results from X-ray crystallography and NMR spectroscopy. No differences in the resonance-Raman spectra were observed which can be directly correlated with conformational changes of the heme pocket in the vicinity of the mutation site. Temperature-dependent resonance Raman experiments of the oxidized mutants revealed spectral changes which are closely related to those observed for cytochrome c upon adsorption to charged silver surfaces by surface-enhanced resonance Raman spectroscopy. These spectral changes can be attributed to an opening of the heme crevice accompanied by a weakening of the iron-methionine ligand bond. The temperature-dependent conformational transition occurs at approximately 30 degrees C for the Ser82 variant and at about 45 degrees C for the Phe82 variant, implying that the Phe----Ser substitution significantly lowers the thermal stability of the heme pocket. The reduced forms of both mutants are stable up to 65 degrees C.
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Affiliation(s)
- P Hildebrandt
- Max-Planck-Institut für Strahlenchemie, Mülheim, Federal Republic of Germany
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68
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Verma AL, Chaudhury NK. Resonance Raman studies of the mechanism of photoreduction of iron protoporphyrin-IX dimethyl ester in the presence of axial ligands. JOURNAL OF RAMAN SPECTROSCOPY 1991; 22:427-434. [DOI: 10.1002/jrs.1250220802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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69
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Fidler V, Ogura T, Sato SI, Aoyagi K, Kitagawa T. Resonance Raman Study on Phot on eduction of Iron–Porphyrins. A Novel Insight into the Ligand-Aided Process. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1991. [DOI: 10.1246/bcsj.64.2315] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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70
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Vibrational studies of nickel porphins and octaethyl porphyrins. J CHEM SCI 1991. [DOI: 10.1007/bf02874656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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71
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Hildebrandt P. Polyanion binding to cytochrome c probed by resonance Raman spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA 1990; 1040:175-86. [PMID: 2169306 DOI: 10.1016/0167-4838(90)90073-o] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The interaction of ferricytochrome c with negatively charged heteropolytungstates was studied by resonance Raman spectroscopy. In analogy to previous findings on ferricytochrome c bound to other types of charged interface (Hildebrandt, P. and Stockburger, M. (1989) Biochemistry 28, 6710-6721, 6722-6728), it was shown that in these complexes the conformational states I and II are stabilized. While in state I, the structure is the same as is in the uncomplexed heme protein, in state II three different coordination configurations coexist, i.e., a six-coordinated low-spin, a five-coordinated high-spin and a six-coordinated high-spin form. These configurations constitute thermal coordination equilibria whose thermodynamic properties were determined. The detailed analysis of the low-frequency resonance Raman spectra reveals that in state II the heme pocket assumes an open structure leading to a significantly higher flexibility of the heme group compared to the native ferricytochrome c. It is concluded that these structural changes are the result of Coulombic attractions between the polyanions and the lysine residues around the exposed heme edge which destabilize the heme crevice. Modifications of these interactions upon variation of the ionic strength, the pH or the type of the polytungstate are sensitively reflected by changes of the coordination equilibria in state II as well as of the conformational equilibrium of state I and state II. The conformational changes in state II significantly differ from those associated with the alkaline transition of ferricytochrome c. However, there are some structural similarities between the acid form of the heme protein stable below pH 2.5 in aqueous solution and the six-coordinated high-spin configuration of the bound ferricytochrome c at neutral pH (state II). This suggests that electrostatic interactions with the heteropolytungstates perturb the ionic equilibria of those amino acid side chains which are involved in the acid-induced transition leading to a significant upshift of the apparent pKa.
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Affiliation(s)
- P Hildebrandt
- Max-Planck-Institut für biophysikalische Chemie, Abteilung Spektroskopie, Göttingen, F.R.G
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72
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Hobbs DD, Kriauciunas A, Güner S, Knaff DB, Ondrias MR. Resonance Raman spectroscopy of cytochrome bc1 complexes from Rhodospirillum rubrum: initial characterization and reductive titrations. BIOCHIMICA ET BIOPHYSICA ACTA 1990; 1018:47-54. [PMID: 2165419 DOI: 10.1016/0005-2728(90)90108-g] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Resonance Raman spectra of bc1 complexes from Rhodospirillum rubrum have been obtained. Various resonance conditions and the stoichiometric redox titration of the complex were used to isolate and identify the contributions of the heme c1 and heme b active sites to the observed spectra. The complex was found to partially photoreduce when exposed to laser excitation.
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Affiliation(s)
- D D Hobbs
- Department of Chemistry, University of New Mexico, Albuquerque
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73
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Spiro TG, Czernuszewicz RS, Li XY. Metalloporphyrin structure and dynamics from resonance raman spectroscopy. Coord Chem Rev 1990. [DOI: 10.1016/0010-8545(90)85019-o] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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74
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Hildebrandt P, Greinert R, Stier A, Taniguchi H. Resonance Raman study on the structure of the active sites of microsomal cytochrome P-450 isozymes LM2 and LM4. EUROPEAN JOURNAL OF BIOCHEMISTRY 1989; 186:291-302. [PMID: 2598933 DOI: 10.1111/j.1432-1033.1989.tb15208.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The isozymes 2 and 4 of rabbit microsomal cytochrome P-450 (LM2, LM4) have been studied by resonance Raman spectroscopy. Based on high quality spectra, a vibrational assignment of the porphyrin modes in the frequency range between 100-1700 cm-1 is presented for different ferric states of cytochrome P-450 LM2 and LM4. The resonance Raman spectra are interpreted in terms of the spin and ligation state of the heme iron and of heme-protein interactions. While in cytochrome P-450 LM2 the six-coordinated low-spin configuration is predominantly occupied, in the isozyme LM4 the five-coordinated high-spin form is the most stable state. The different stability of these two spin configurations in LM2 and LM4 can be attributed to the structures of the active sites. In the low-spin form of the isozymes LM4 the protein matrix forces the heme into a more rigid conformation than in LM2. These steric constraints are removed upon dissociation of the sixth ligand leading to a more flexible structure of the active site in the high-spin form of the isozyme LM4. The vibrational modes of the vinyl groups were found to be characteristic markers for the specific structures of the heme pockets in both isozymes. They also respond sensitively to type-I substrate binding. While in cytochrome P-450 LM4 the occupation of the substrate-binding pocket induces conformational changes of the vinyl groups, as reflected by frequency shifts of the vinyl modes, in the LM2 isozyme the ground-state conformation of these substituents remain unaffected, suggesting that the more flexible heme pocket can accommodate substrates without imposing steric constraints on the porphyrin. The resonance Raman technique makes structural changes visible which are induced by substrate binding in addition and independent of the changes associated with the shift of the spin state equilibrium: the high-spin states in the substrate-bound and substrate-free enzyme are structurally different. The formation of the inactive form, P-420, involves a severe structural rearrangement in the heme binding pocket leading to drastic changes of the vinyl group conformations. The conformational differences of the active sites in cytochromes P-450 LM2 and LM4 observed in this work contribute to the understanding of the structural basis accounting for substrate and product specificity of cytochrome P-450 isozymes.
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Affiliation(s)
- P Hildebrandt
- Max-Planck-Institut für Biophysikalische Chemie, Abteilung Spektroskopie, Göttingen, FRG
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75
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Hildebrandt P, Garda H, Stier A, Bachmanova GI, Kanaeva IP, Archakov AI. Protein-protein interactions in microsomal cytochrome P-450 isozyme LM2 and their effect on substrate binding. EUROPEAN JOURNAL OF BIOCHEMISTRY 1989; 186:383-8. [PMID: 2598935 DOI: 10.1111/j.1432-1033.1989.tb15220.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The effects of protein-protein interactions and substrate binding on the structure of the active site of rabbit liver microsomal cytochrome P-450 LM2 have been analyzed by resonance Raman spectroscopy of the monomeric and oligomeric protein in solution. Also H2O2-dependent catalytic activities of the two states have been compared. The two vinyl substituents of the heme exhibit different orientations, as indicated by the frequencies and intensities of their stretching vibrations. One group lies in the plane of the heme and remains unchanged in the two states of cytochrome P-450 LM2, the other is tilted out of the plane. The tilting angle in oligomers was smaller than in monomers. These vinyl stretching modes together with some porphyrin modes, were found to be sensitive indicators of the quaternary structure and of substrate binding. In both the oligomer and the monomer, substrate binding causes changes of the relative intensities of some porphyrin modes and the vinyl stretching vibrations which may reflect modifications of the electronic transitions due to hydrophobic interactions between the bound substrate and the heme. In contrast to the monomeric cytochrome P-450 LM2, benzphetamine binding to the oligomers of this isozyme additionally produces a shift of the spin-state equilibrium. This indicates that in the oligomer the substrate-binding pocket is converted by protein-protein interaction to a structure that forces substrates to interfere with the sixth ligands, inducing an increase of the five-coordinated high-spin configuration. In the monomer the substrate-binding pocket can accommodate benzphetamine without affecting the spin state. Binding of imidazole to the monomeric and oligomeric cytochrome P-450 LM2 produces essentially the same resonance Raman spectra. Apparently the replacement of the native sixth ligand by imidazole disturbs the structure of the active site in such a way that it becomes insensitive to protein-protein interactions. H2O2-dependent N-demethylation of benzphetamine and aniline p-hydroxylation by cytochrome P-450 LM2 did not depend on its state of aggregation.
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Affiliation(s)
- P Hildebrandt
- Max-Planck-Institut für Biophysikalische Chemie, Abteilung Spektroskopie, Göttingen, FRG
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76
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Desbois A, Tegoni M, Gervais M, Lutz M. Flavin and heme structures in lactate:cytochrome c oxidoreductase: a resonance Raman study. Biochemistry 1989; 28:8011-22. [PMID: 2605171 DOI: 10.1021/bi00446a007] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Resonance Raman spectra of Hansenula anomala L-lactate:cytochrome c oxidoreductase (or flavocytochrome b2), of its cytochrome b2 core, and of a bis(imidazole) iron-protoporphyrin complex were obtained at the Soret preresonance from the oxidized and reduced forms. Raman contributions from both the isoalloxazine ring of flavin mononucleotide (FMN) and the heme b2 were observed in the spectra of oxidized flavocytochrome b2. Raman diagrams showing frequency differences of selected FMN modes between aqueous and proteic environments were drawn for various flavoproteins. These diagrams were closely similar for flavocytochrome b2 and for flavodoxins. This showed that the FMN structure must be very similar in both types of proteins, despite their very different proteic pockets. However, the electron density at this macrocycle was found to be higher in flavocytochrome b2 than in these electron transferases. No significant difference was observed between the heme structures in flavocytochrome b2 and in cytochrome b2 core. The porphyrin center-N(pyrrole) distances in the oxidized and reduced heme b2 were estimated to be 1.990 and 2.022 A from frequencies of porphyrin skeletal modes, respectively. The frequency of the vinyl stretching mode of protoporphyrin was found to be very affected in resonance Raman spectra of flavocytochrome b2 and of cytochrome b2 core (1634-1636 cm-1) relative to those observed in the spectra of iron-protoporphyrin [bis(imidazole)] complexes (1620 cm-1). These specificities were interpreted as reflecting a near coplanarity of the vinyl groups of heme b2 with the pyrrole rings to which they are attached. The low-frequency regions of resonance Raman indicated that the iron atoms of the four hemes b2 are in the porphyrin plane whatever their oxidation state. The histidine-Fe-histidine symmetric stretching mode was located at 205 cm-1 in the spectra of flavocytochrome b2 and of cytochrome b2 core. It was insensitive to the iron oxidation state and indicated strong Fe-His bonds in both states.
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Affiliation(s)
- A Desbois
- Laboratoire de Biophysique, Institut de Biologie Physico-Chimique, Paris, France
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77
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Sage JT, Morikis D, Champion PM. Resonance Raman studies of oriented chromophores: Metmyoglobin single crystals. J Chem Phys 1989. [DOI: 10.1063/1.455904] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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78
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79
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Hoey S, Brown DH, McConnell AA, Smith WE, Marabani M, Sturrock RD. Resonance Raman spectroscopy of hemoglobin in intact cells: a probe of oxygen uptake by erythrocytes in rheumatoid arthritis. J Inorg Biochem 1988; 34:189-99. [PMID: 3236003 DOI: 10.1016/0162-0134(88)85029-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Resonance Raman spectra from intact viable erythrocytes can be used to study oxygen uptake in solution. In addition to changes in the oxidation state marker (nu 4), other bands due to the porphyrin ring (nu 3) and vinyl modes indicate subtle changes at oxygen pressures close to where the T/R change occurs. A comparison of whole cell and lysate spectra indicates a partial denaturation of hemoglobin on lysis. A simple smear technique is used to measure spectra from rheumatoid and normal blood. Results indicate a faster but less complete uptake of oxygen in cells from patients with rheumatoid arthritis than is the case in normal cell populations.
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Affiliation(s)
- S Hoey
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow
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80
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Smulevich G, Mauro JM, Fishel LA, English AM, Kraut J, Spiro TG. Heme pocket interactions in cytochrome c peroxidase studied by site-directed mutagenesis and resonance Raman spectroscopy. Biochemistry 1988; 27:5477-85. [PMID: 2846039 DOI: 10.1021/bi00415a014] [Citation(s) in RCA: 105] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Resonance Raman spectra are reported for FeII and FeIII forms of cytochrome c peroxidase (CCP) mutants prepared by site-directed mutagenesis and cloning in Escherichia coli. These include the bacterial "wild type", CCP(MI), and mutations involving groups on the proximal (Asp-235----Asn, Trp-191----Phe) and distal (Trp-51----Phe, Arg-48----Leu and Lys) side of the heme. These spectra are used to assess the spin and ligation states of the heme, via the porphyrin marker band frequencies, especially v3, near 1500 cm-1, and, for the FeII forms, the status of the Fe-proximal histidine bond via its stretching frequency. The FeII-His frequency is elevated to approximately 240 cm-1 in CCP(MI) and in all of the distal mutants, due to hydrogen-bonding interactions between the proximal His-175 N delta and the carboxylate acceptor group on Asp-235. The FeII-His RR band has two components, at 233 and 246 cm-1, which are suggested to arise from populations having H-bonded and deprotonated imidazole; these can be viewed in terms of a double-well potential involving proton transfer coupled to protein conformation. The populations shift with changing pH, possibly reflecting structure changes associated with protonation of key histidine residues, and are influenced by the Leu-48 and Phe-191 mutations. A low-spin FeII form is seen at high pH for the Lys-48, Leu-48, Phe-191, and Phe-51 mutants; for the last three species, coordination of the distal His-52 is suggested by a approximately 200-cm-1 RR band assignable to Fe(imidazole)2 stretching.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- G Smulevich
- Dipartimento di Chimica, Università di Firenze, Italy
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81
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Kelly K, Rospendowski BN, Smith WE, Wolf CR. Surface enhanced resonance Raman scattering as a probe of the spin state of structurally related cytochromes P-450 from rat liver. FEBS Lett 1987; 222:120-4. [PMID: 3653392 DOI: 10.1016/0014-5793(87)80203-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Surface enhanced resonance Raman scattering (SERRS) was observed from structurally related drug-induced rat liver cytochromes P-450 adsorbed on a silver colloid. Careful control of pH and the sequence of addition of components to the so1 is required to prevent protein denaturation at the surface due to conversion to P-450's biologically inactive form P-420 or haem loss. A low-spin P-450 (PB3a), a mixed low- and high-spin P-450 (PB3b) and a predominantly high-spin P-450 (MC1a) were investigated. Spectra recorded in the 1300-1700 cm-1 frequency region, containing the oxidation state marker v4 at 1375 cm-1 (Fe3+) and spin state markers v10 (1625 cm-1, high-spin; 1633 cm-1, low-spin) and v19 (1575 cm-1, high-spin; 1585 cm-1, low-spin) were used to differentiate between the spin states of the various forms of cytochrome P-450. As well as the established spin state marker bands, the intensity of a band at 1400 cm-1 appeared to depend on the high-spin content. Thus, with this method SERRS from silver colloids can be used to determine spin states of related cytochromes P-450 in dilute solution (10(-8)M) and may be of value in studies of protein-substrate interactions.
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Affiliation(s)
- K Kelly
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, Scotland
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82
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Tsubaki M, Hori H, Hotta T, Hiwatashi A, Ichikawa Y, Yu NT. Influence of heme-surrounding amino acid residues on the manganese (V)-nitrido bond in manganese-substituted hemoproteins: resonance Raman evidence for porphyrin core expansion and reduction of the manganese(V)-nitrido stretching force constant. Biochemistry 1987; 26:4980-6. [PMID: 3663640 DOI: 10.1021/bi00390a015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Nitridomanganese(V) protoporphyrin IX was prepared by hypochlorite oxidation of the corresponding manganese(III) protoporphyrin IX derivative in the presence of ammonium ion and by photolysis of the corresponding azidomanganese(III) complex. Myoglobin and horseradish peroxidase containing this novel protoporphyrin derivative were prepared for the first time. These remarkably stable species were examined by electronic absorption, electron paramagnetic resonance, and resonance Raman spectroscopies. The MnV-N stretching modes of the nitridomanganese(V)-substituted myoglobin and horseradish peroxidase were observed at 1010 and 1003 cm-1, respectively, by resonance Raman spectroscopy, while the MnV-N stretching frequency for nitridomanganese(V) protoporphyrin IX in 0.1 N aqueous NaOH was found at 1046 cm-1. The equilibrium dissociation energies of MnV-N bonds in these complexes were estimated from vibrational overtone spacings by introducing the Morse potential energy function, were found to be around 4.5 eV, and seemed independent of the surroundings of the manganese porphyrin, although its force constant decreased from 7.3 to 6.7 mdyn/A upon incorporation into apoprotein. The porphyrin ring modes of these nitridomanganese(V) derivatives were influenced greatly upon incorporation into apoproteins, suggestive of the occurrence of porphyrin core expansion. Upon this core expansion the MnV center moves into the mean plane of porphyrin plane, but the access of nitrido (N) toward MnV is restricted due to a steric hindrance from porphyrin pyrrole nitrogens. The resulting stretched MnV-N bond might cause lowering of the MnV-N stretching frequency upon incorporation into apoprotein.
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Affiliation(s)
- M Tsubaki
- Department of Biochemistry, Kagawa Medical School, Japan
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83
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Schick GA, Bocian DF. Resonance Raman studies of hydroporphyrins and chlorophylls. BIOCHIMICA ET BIOPHYSICA ACTA 1987; 895:127-54. [PMID: 3332773 DOI: 10.1016/s0304-4173(87)80011-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- G A Schick
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213
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84
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Lee H, Kitagawa T, Abe M, Pandey R, Leung HK, Smith K. Characterization of low frequency resonance Raman bands of metallo-protoporphyrin ix. observation of isotope shifts and normal coordinate treatments. J Mol Struct 1986. [DOI: 10.1016/0022-2860(86)80302-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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85
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Etude par spectroscopie raman de resonance du schema de coordination du fer de derives ferriporphyriniques a liaison σ metal-carbone. J Organomet Chem 1986. [DOI: 10.1016/s0022-328x(00)99732-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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86
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Copeland RA, Spiro TG. Resonance Raman evidence for an exchangeable protein hydrogen associated with the heme a group of cytochrome oxidase. FEBS Lett 1986; 197:239-43. [PMID: 3005042 DOI: 10.1016/0014-5793(86)80334-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
When cytochrome-c oxidase is soaked in D2O, downshifts of the cytochrome a formyl C = O stretching mode are seen in the resonance Raman (RR) spectra (413.1 nm excitation) of both the resting and reduced forms. Other changes observed in the reduced protein RR spectra are consistent with involvement of the cytochrome a formyl group in the deuterium effect. The D2O-induced RR changes are fully developed during 3-5 days incubation, but are incomplete after 1 h. Extraction of the heme a chromophore in deuterated solvents eliminates these changes, implying that the exchangeable proton is on a protein group in the cytochrome a pocket which H-bonds to the heme formyl. The rate of the D2O exchange process is unaffected by enzyme turnover, thus reducing the likelihood that the cytochrome a formyl H-bond is directly involved in the redox-linked mechanism of proton pumping.
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87
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Gladkov L, Solovyov K. Normal coordinate analysis of porphin and its derivatives based on the solution of the inverse spectral problem for porphin and Cu porphin—III. Interpretation of vibrational spectra of metal complexes of octamethylporphin and octaethylporphin. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0584-8539(86)80122-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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88
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Sitter AJ, Reczek CM, Terner J. Observation of the FeIV=O stretching vibration of ferryl myoglobin by resonance Raman spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA 1985; 828:229-35. [PMID: 3986209 DOI: 10.1016/0167-4838(85)90301-2] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We have directly observed the oxyferryl group of ferryl myoglobin by resonance Raman spectroscopy. The FeIV = O stretching vibration is observed at 797 cm-1 and confirmed by an 18O-induced isotopic shift to 771 cm-1. The porphyrin center-to-nitrogen distance of ferryl myoglobin is significantly less than that previously observed for horseradish peroxidase compound II, which also contains an FeIV = O heme. The FeIII-CN- stretch of myoglobin (FeIII) cyanide is observed at 454 cm-1, which shifts to 449 cm-1 upon substitution with [13C]cyanide.
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89
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Terner J, Sitter AJ, Reczek CM. Resonance Raman spectroscopic characterizations of horseradish peroxidase. Observations of the FeIV = O stretching vibration of Compound II. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0167-4838(85)90011-1] [Citation(s) in RCA: 74] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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90
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Gladkov L, Solovyov K. The normal coordinate analysis of porphin and its derivatives based on the solution of the inverse spectral problem for porphin and Cu porphin—II. A valence force field for in-plane vibrations of the Cu porphin molecule. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0584-8539(85)80201-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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91
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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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92
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Homborg H, Murray KS. Darstellung und Eigenschaften anionischer Fluoro-Komplexe von Mg-, Zn- und Al-Phthalocyanin(2?). Z Anorg Allg Chem 1984. [DOI: 10.1002/zaac.19845171014] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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93
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Desbois A, Henry Y, Lutz M. Influence of peripheral substituents on the resonance Raman spectra of ferroporphyrin-2-methylimidazole complexes. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0167-4838(84)90139-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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94
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Kozuka M, Iwaizumi M. The Resonance Raman Spectra of (meso-Tetraphenylporphinato)cobalt(II)-d0[Co (TPP)-d0], -d8, and -d20. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1983. [DOI: 10.1246/bcsj.56.3165] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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95
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Desbois A, Lutz M. Low-frequency vibrations of ferroprotoporphyrin-substituted imidazole complexes. A resonance Raman study. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/0005-2795(81)90131-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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96
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97
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98
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Igarashi R, Adachi Y, Maeda S. Resonance CARS and CSRS line shapes of Ni(II)‐octaethylporphyrin. J Chem Phys 1980. [DOI: 10.1063/1.439724] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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99
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Nagai K, Kitagawa T, Morimoto H. Quaternary structures and low frequency molecular vibrations of haems of deoxy and oxyhaemoglobin studied by resonance raman scattering. J Mol Biol 1980; 136:271-89. [PMID: 7373652 DOI: 10.1016/0022-2836(80)90374-5] [Citation(s) in RCA: 188] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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100
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Abe M, Kitagawa T, Kyogoku Y. Resonance Raman spectra of octaethylporphyrinato‐Ni(II) and meso‐deuterated and 15N substituted derivatives. II. A normal coordinate analysis. J Chem Phys 1978. [DOI: 10.1063/1.436450] [Citation(s) in RCA: 449] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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