Results 111 to 120 of about 1,955 (147)
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Rate Theories and Puzzles of Hemeprotein Kinetics
Science, 1985The binding of dioxygen and carbon monoxide to heme proteins such as myoglobin and hemoglobin has been studied with flash photolysis. At temperatures below 200 K, binding occurs from within the heme pocket and, contrary to expectation, with nearly equal rates for both ligands. This observation has led to a reexamination of the theory of the association
H, Frauenfelder, P G, Wolynes
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Theory of hemeprotein reactivity
Journal of Theoretical Biology, 1971Abstract A chemical theory of hemeprotein reactivity is presented. It is based upon recent chemical and spectroscopic studies of metalloporphyrins and hemeproteins and upon the established X-ray structures of the iron (III) complexes of hemoglobin, myoglobin and cytochrome c.
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In Silico Insight into the Reductive Nitrosylation of Ferric Hemeproteins
Inorganic Chemistry, 2020A combination of in silico methods was used to extend the experimental description of the reductive nitrosylation mechanism in ferric hemeproteins with the molecular details of the role of surrounding amino acids. The computational strategy consisted in the estimation of potential energy profiles for the transition process associated with the ...
Nicolás O. Foglia +2 more
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A hemeprotein implicated in oxygen transport into the eye of fish
Comparative Biochemistry and Physiology Part A: Physiology, 1975Abstract 1. 1. Following occlusion of the circulation to the eye of bluefish a ferric hemeprotein (or proteins) appears in the blood plasma of the ophthalmic blood vessels. 2. 2. This protein may play a role in the establishment of elevated oxygen pressures by the choroid rete mirabile. 3. 3.
J B, Wittenberg, B A, Wittenberg
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Vibrational Energy Flow in Hemeproteins
19th International Conference on Ultrafast Phenomena, 2014We demonstrate that time-resolved anti-Stokes ultraviolet resonance Raman spectroscopy is a powerful tool for studying the vibrational energy flow in proteins with a spatial resolution of a single amino acid residue.
Yasuhisa Mizutani +4 more
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STUDIES ON HISTIDINE RESIDUES IN HEMEPROTEINS RELATED TO THEIR ACTIVITIES
Journal of Biochemistry, 1960exaly +4 more sources
Syntehsis and structural stability of helichrome as an artificial hemeproteins
Biopolymers, 1990AbstractA detailed procedure is described for the syntehsis of helichrome, which is the first successful example of polypeptide‐based artificial hemeprotein. The segment synthesis‐condensation approach used for the assembly of small proteins has proven to be extremely useful for protein mimetics as well.
T, Sasaki, E T, Kaiser
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Permeability of the neonatal rat choriocapillaris to hemeproteins and ferritin
American Journal of Anatomy, 1982AbstractThe permeability of the endothelium of the capillaries of the rat choriocapillaris to circulating macromolecules was examined during the first postnatal week of development using hemeproteins of different molecular dimensions and ferritin. At this stage of development capillaries and photoreceptor cells in the neural retina are not fully formed,
R M, Pino, E, Essner, L C, Pino
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Do the hemeproteins behave as a dissipative structure?
International Journal of Quantum Chemistry, 1996Continuing the search for a broader interpretation of hemeprotein behavior, we give preliminary results showing that there are electric and dynamic couplings between the heme group and amino acid residues within the protein matrix. EPR and X-ray absorption spectroscopy studies on azidometmyoglobin show that both magnetic and geometric properties of ...
Bernard Alpert +4 more
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Ultrafast absorption and Raman spectroscopy of hemeproteins
Chemical Physics, 1989Abstract The applications of Raman and absorption spectroscopy to understand the photophysics and the dynamics of hemoglobin and myoglobin are discussed. The extension of these techniques to the picosecond and the femtosecond domains is described. Study of hemeprotein reactivity on this ultrafast time scale is advantageous because it simplifies the ...
J.W. Petrich, J.L. Martin
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