Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 62 for “"Reaction Center"”.
-
Picosecond Kinetics of Reaction Center Chlorophyll
Made available in DSpace on 2014-12-13T20:10:33Z (GMT). No. of bitstreams: 1 7913573.pdf: 6764113 bytes, checksum: d81ee92b91443a213624bf7282cd40da (MD5) Previous issue date: 1978
-
Synthetic Analogs of the Photosynthetic Reaction Center
The bis(porphyrin) subunit has also been incorporated into a triad complex where the bridge between the expected quinone and bis(porphyrin) subunit is a monomer porphyrin. Use of meso-(mesityl) dipyrromethane leads to trans-substituted porphyrin.
-
Design, Structure, And Action Of An Artificial Photosynthetic Reaction Center
At the heart of photosystem II is the reaction center, where solar energy is used to separate charge. Set within a large and highly complex protein system, the handful of redox cofactors that make up the reaction center form an electron transport chain that converts the energy of a central, …
-
Supramolecular Porphyrin Assemblies: Photosynthetic Reaction Center Analogs and Porphyrin Networks
Photophysical measurements were carried out in collaboration with Professor Dewey Holten and Robin Lammi at Washington University. The lifetimes for the initial photoexcited states of the triad, protected triad, and Zr(TTP)(TTP-NH 2) in a given solvent are the same within experimental error. This …
-
A Comparative Study of Reaction-Center Components of Photosynthetic Bacteria
Made available in DSpace on 2014-12-11T00:00:14Z (GMT). No. of bitstreams: 1 7317430.pdf: 6001387 bytes, checksum: 4590e880451de2734b1249e0797f75b0 (MD5) Previous issue date: 1972
-
Cytochrome C Oxidation by the Bacterial Photosynthetic Reaction Center From Rhodobacter Sphaeroides
The interaction of the photosynthetic reaction center (RC) from Rhodobacter sphaeroides and soluble c-type cytochromes has been studied by redox potentiometry and kinetic absorbance spectroscopy. Under intense continuous illumination, in the presence of excess reactants, the RC turnover rate was …
-
Electron Transfer in the Reaction Center From Rhodopseudomonas Viridis (Photosynthesis, Bioenergetics, Bacteria)
… of photoinduced electron transfer in the reaction center protein involved in bacterial photosynthesis of the species Rhodopseudomonas viridis. The quinone acceptor complex behaves as a two electron gate, to shuttle electrons and protons through the reaction center, as in other …
-
Energetics of protein fluctuations: Ligand binding to myoglobin and electron transfer in reaction center
Submitted by William Weathers (weathrs2@illinois.edu) on 2012-04-19T21:39:43Z No. of bitstreams: 1 1997_mcmahon.pdf: 3977176 bytes, checksum: b904fbd25d4ab8a7759bba43689ab035 (MD5)
-
The photosynthetic bacterial reaction center in native and artificial envirnoments: effects on light-induced electron transfer
… we focussed on the characterization of the reaction center (RC) protein purified from the photosynthetic bacterium Rhodobacter sphaeroides. In particular, we discussed the effects of native and artificial environment on the light-induced electron transfer processes. The native environment …
-
Experimental and theoretical studies of the photosystem II reaction center: Implications for bicarbonate binding and function
… bicarbonate binding in the photosystem II (PSII) reaction center, arginines 257 and 269 of the D1 polypeptide (D1-R257 and D1-R269) near the putative bicarbonate binding sites, the non-heme iron and the Q$\sb{\rm B}$ binding niche, were mutated in a unicellular green alga Chlamydomonas …
-
Characterization of Site-Directed Mutants in the Q(B) Binding Site of the Photosynthetic Reaction Center of Rhodobacter Sphaeroides
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1992.
-
The Binding Pockets of QA and QB in the Photosynthetic Reaction Center of Rba. sphaeroides Probed by Pulsed EPR
… Rhodobacter sphaeroides uses photosynthetic reaction centers to convert light into chemical energy. Light absorption by the reaction center results in electron transfer through a series of cofactors, the final two are identical ubiquinones (QA and QB). Both ubiquinones can be stabilized in …
-
Structure and function studies of polar mutants of the QA pocket in the bacterial photosynthetic reaction center of Rhodobacter sphaeroides
The bacterial photosynthetic reaction center (RC) is the protein that converts light to chemical energy. The light is initially absorbed by a pair of bacteriochlorophylls that then transfer an electron through a series of cofactors until it reaches the final two electron acceptors, the primary …
-
Biophysical investigation of electron transfer between high-potential hemes in c subunit and special pair of reaction center protein of photosynthetic bacteria Rhodopseudomonas viridis
… integrated to a single protein subunit of the reaction center complex. Two of them are high redox midpoint potential hemes (cyt-c559; Em = 380 mV and cyt-c556; Em = 310 mV) and other two are low midpoint potential hemes (cyt-c552; Em = 0 mV and cyt-c554; Em = $-$60 mV). The temperature …
-
The Effects of Chemical Modification Upon Herbicide Binding in Thylakoid Membranes of Spinacia Oleracea (Spinach) and Amaranthus Hybridus (Pigweed), and The Photochemical Reaction Center of Rhodobacter Sphaeroides R26
Dicyclohexylcarbodiimide inhibits electron transfer between Q$\sb{\rm A}$ and Q$\sb{\rm B}$ in both higher plants and photosynthetic bacteria in an analogous manner to that seen for the classic Photosystem II inhibitors such as diuron and atrazine. It does not bind to the same binding domain as …
-
Molecular Genetic Analysis of Rhodobacter Sphaeroides Light-Harvesting Complexes
… pufA) are closely linked to the genes for the reaction center-L and reaction center-M polypeptides (pufL and pufM) on what has been termed the puf operon (gene order pufB,A,L,M). The DNA sequence of pufB and pufA from wild-type R. sphaeroides 2.4.1 was determined. The relative levels of the …
-
Application and Development of Molecular Dynamics Methods to Examine the Energy Landscapes of Protein Folding and Transient Protein -Protein Complexes
… protein-protein complex of the photosynthetic reaction center and cytochrome c2 from Rhodobacter sphaeroides was studied using full-atom Steered Molecular Dynamics. Initial translation of cytochrome c2 at various heights over the surface of the reaction center revealed a probable exit pathway. …
-
High Light and Low Temperature Effect on D1 Synthesis and Turnover in the Chilling Sensitive Plant Lycopersicun Esculentum
… of D1, a component of photosystem II (PSII) reaction center which is known to be damaged by high light. The decrease in D1 synthesis was not due to changes in the steady state level of psbA, D1 message. An increase in psbA mRNA association with ribosomes along with pausing during elongation …
Page 1 of 4