Search Results - "ONDRIAS, M. R"

Metal dependence of the nonplanar distortion of octaalkyltetraphenylporphyrins by Sparks, L. D, Medforth, C. J, Park, M. S, Chamberlain, J. R, Ondrias, M. R, Senge, M. O, Smith, K. M, Shelnutt, J. A

“…The biological activity of porphyrins and related tetrapyrroles in proteins may be modulated by nonplanar conformational distortions; consequently, two aspects…”
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Influences of .pi.-.pi. complex formation, dimerization, and binding to hemoglobin on the planarity of nickel(II) porphyrins by Alden, R. G, Ondrias, M. R, Shelnutt, John A

“…The effects of pi - pi dimerization and complex formation on the planar and nonplanar conformations of the macrocycle of nickel(II) uroporphyrin I (NiUroP…”
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Ruffling of nickel(II) octaethylporphyrin in solution by Alden, R. G, Crawford, B. A, Doolen, R, Ondrias, M. R, Shelnutt, J. A

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Transient Raman Observations of Heme Electronic and Vibrational Photodynamics in Deoxyhemoglobin by Simpson, M. C, Peterson, E. S, Shannon, C. F, Eads, D. D, Friedman, J. M, Cheatum, C. M, Ondrias, M. R

“…Transient resonance Raman spectroscopy has been used to probe the vibrational dynamics of the heme active site of deoxyhemoglobin during photoexcitation. Near…”
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Electrostatic and Conformational Effects on the Electronic Structures of Distortional Isomers of a Mixed-Valence Binuclear Cu Complex by Franzen, Stefan, Miskowski, Vincent M, Shreve, Andrew P, Wallace-Williams, Stacie E, Woodruff, William H, Ondrias, Mark R, Barr, Mary E, Moore, Laura, Boxer, Steven G

“…The electronic structure of the binuclear copper complex [Cu2(L)]3+ [L = N(CH2CH2N(H)CH2CH2N(H)CH2CH2)3N] has been investigated by resonance Raman and…”
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Picosecond Time--Resolved Resonance Raman Studies of Hemoglobin: Implications for Reactivity by Findsen, E. W., Friedman, J. M., Ondrias, M. R., Simon, S. R.

“…Picosecond time--resolved Raman spectra of hemoglobin generated with blue pulses (20 to 30 picoseconds) that were resonant with the Soret band and of…”
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Transient and Time-Resolved Resonance Raman Investigation of Photoinitiated Electron Transfer in Ruthenated Cytochromes c by Simpson, M. C, Millett, F, Pan, L. P, Larsen, R. W, Hobbs, J. D, Fan, B, Ondrias, M. R

“…Ruthenation of exterior amino acid residues of heme proteins provides an effective means by which biological ET reactions can be studied within the context of…”
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Structural and functional significance of inhomogeneous line broadening of band III in hemoglobin and Fe-Mn hybrid hemoglobins by CHAVEZ, M. D, COURTNEY, S. H, CHANCE, M. R, KIULA, D, NOCEK, J, HOFFMAN, B. M, FRIEDMAN, J. M, ONDRIAS, M. R

“…Near-infrared spectra of hemoglobin and Fe-Mn hybrid hemoglobins have been obtained at cryogenic temperatures. The charge-transfer (a2u(pi)---dzy) transition…”
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Localized Control of Ligand Binding in Hemoglobin: Effect of Tertiary Structure on Picosecond Geminate Recombination by Friedman, J. M., Scott, T. W., Fisanick, G. J., Simon, S. R., Findsen, E. W., Ondrias, M. R., Macdonald, V. W.

“…The picosecond geminate rebinding of molecular oxygen was monitored in a variety of different human, reptilian, and fish hemoglobins. The fast (100 to 200…”
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Direct measurement of vibrational temperatures in photoexcited deoxyhemoglobin on picosecond time scales by Alden, R. G, Chavez, M. D, Ondrias, M. R, Courtney, S. H, Friedman, J. M

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Effect of solvent viscosity on the heme-pocket dynamics of photolyzed (carbonmonoxy)hemoglobin by Findsen, E. W, Friedman, J. M, Ondrias, M. R

“…The heme-pocket dynamics subsequent to carbon monoxide photolysis from human hemoglobin have been monitored as a function of glycerol-water solvent composition…”
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Heme-CO religation in photolyzed hemoglobin : a time-resolved Raman study of the Fe-CO stretching mode by SCHNEEBECK, M. C, VIGIL, L. E, FRIEDMAN, J. M, CHAVEZ, M. D, ONDRIAS, M. R

“…Time-resolved resonance Raman spectroscopy has been employed to monitor geminate heme-CO rebinding in photolyzed HbCO. The excitation frequency was tuned to…”
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Resonance Raman characterization of Chromatium vinosum cytochrome c'. Effect of pH and comparison of equilibrium and photolyzed carbon monoxide species by Hobbs, J. D, Larsen, R. W, Meyer, T. E, Hazzard, J. H, Cusanovich, M. A, Ondrias, M. R

“…Resonance Raman spectra of Chromatium vinosum cytochrome c' have been obtained for the five pH-dependent states of the protein [i.e., types I (pH 7), II (pH…”
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The effects of high pressure upon ligated and deoxyhemoglobins and myoglobin. An optical spectroscopic study by ALDEN, R. G, SATTERLEE, J. D, MINTOROVITCH, J, CONSTANTINIDIS, I, ONDRIAS, M. R, SWANSON, B. I

“…The effects of high pressure (0.1-3.4 gigapascal (GPa)) on the ferrous heme active sites of human adult hemoglobin, sperm whale myoglobin, and Glycera…”
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Transient Raman Study of Hemoglobin: Structural Dependence of the Iron-Histidine Linkage by Friedman, J. M., Rousseau, D. L., Ondrias, M. R., Stepnoski, R. A.

“…Low-frequency resonance Raman spectra of transient hemoglobin species were observed within 10 nanoseconds of photolysis. The Raman frequencies of the…”
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Transient and time-resolved optical studies of photolyzed carbonmonoxy hemoglobin and myoglobin by Findsen, E W, Ondrias, M R

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Transient Resonance Raman Evidence for Structural Reorganizational Dynamics during Electron Transfer in Ruthenated Yeast Cytochrome c by Simpson, M. C, Millett, F, Fan, B, Ondrias, M. R

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Evidence for hydrogen bonding of bound dioxygen to the distal histidine of oxycobalt myoglobin and haemoglobin by Kitagawa, T, Ondrias, M. R, Rousseau, D. L, Ikeda-Saito, M, Yonetani, T

“…The origin of the differences in oxygen binding energy in various haemoglobins and myoglobins has long been debated. Perutz proposed that the haem-coordinated…”
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Synthesis and Physical Characterization of Novel Heme-Based Model Systems for Photoinitiated Electron Transfer. 1. Complexation of a RuProHis Bifunctional Peptide and Microperoxidase-11 by Fan, B, Fontenot, D. L, Larsen, R. W, Simpson, M. C, Shelnutt, J. A, Falcon, R, Martinez, L, Niu, S, Zhang, S, Niemczyk, T, Ondrias, M. R

“…This paper describes the synthesis and initial physical characterization of a new type of model system for the investigation of photoinitiated electron…”
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Synthesis and Physical Characterization of Novel Heme-Based Model Systems for Photoinitiated Electron Transfer. 2. Direct Ruthenation of Microperoxidase-11 by Fan, B, Simpson, M. C, Shelnutt, J. A, Martinez, L, Falcon, R, Buranda, T, Pastuszyn, A. J, Ondrias, M. R

“…This paper describes the design, synthesis, and initial characterization of a second type of model electron transfer system based upon microperoxidase-11…”
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