Download or read book Electronic and Nuclear Dynamics of the Bacterial Photosynthetic Reaction Center and Chlorosomes from Resonance Raman Intensities written by Nerine Jane Cherepy and published by . This book was released on 1996 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Photosynthetic Bacterial Reaction Center II written by Jacques Breton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NATO Advanced Research Workshop entitled "The Photosynthetic Bacterial Reaction Center: Structure, Spectroscopy, and Dynamics" was held May 10-15, 1992, in the Maison d'H6tes of the Centre d'Etudes Nuc1eaires de Cadarache near Aix-en-Provence in the south of France. This workshop is the most recent of a string of meetings which started in Feldafing (Germany) in March 1985, soon after the three-dimensional structure of the bacterial reaction center had been elucidated by X-ray crystallography. This was followed, in September 1987, by a workshop in Cadarache and, in March 1990, by a second meeting in Feldafing. Although one of the most important processes on Earth, photosynthesis is still poorly understood. Stimulated by the breakthrough of solving the bacterial reaction center structure at atomic resolution, the field of relating this structure to the function of the reaction center, i. e. the remarkably efficient conversion and storage of solar energy, has been developing vigorously. Once the general organization of the cofactors and some details of the protein-cofactor interactions were known, it became possible to combine a variety of spectroscopic techniques with the powerful tool of site-directed mutagenesis in order to address increasingly incisive questions about the specific role of some amino acid residues in the electron transfer process. Still another promising tool is being developed, namely the exchange of a number of the native bacteriochlorophyll and bacteriopheophytin cofactors by chemically modified pigments.
Download or read book The Reaction Center of Photosynthetic Bacteria written by Maria-Elisabeth Michel-Beyerle and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of this third Feldafing Meeting can be considered as the harvest of novel techniques in spectroscopy, biochemistry and molecular biology to the bacterial photosynthetic reaction center. New information pertains to the crystallographic and electronic structure as well as to the dynamics of primary events and the role of the protein. The answer to one long-standing problem, the mechanism of primary charge separation, converges towards a sequential scheme, supported by femtosecond spectroscopy on reaction centers with selectively modified energetics.
Download or read book The Photosynthetic Bacterial Reaction Center written by J. Breton and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the contributions from the speakers at the NATO Advanced Research Workshop on "Structure of the Photosynthetic Bacterial Reaction Center X-ray Crystallography and Optical Spectroscopy with Polarized Light" which was held at the "Maison d'Hotes" of the Centre d'Etudes Nucleaires de Cadarache in the South of France, 20-25 September, 1987. This meeting continued in the spirit of a previous workshop which took place in Feldafing (FRG), March 1985. Photosynthetic reaction centers are intrinsic membrane proteins which, by performing a photoinduced transmembrane charge separation, are responsible for the conversion and storage of solar energy. Since the pioneering work of Reed and Clayton (1968) on the isolation of the reaction center from photosynthetic bacteria, optical spectroscopy with polarized light has been one of the main tools used to investigate the geometrical arrangement of the various chromophores in these systems. The recent elucidation by X-ray crystallography of the structure of several bacterial reaction centers, a breakthrough initiated by Michel and Deisenhofer, has provided us with the atomic coordinates of the pigments and some details about their interactions with neighboring aminoacid residues. This essential step has given a large impetus both to experimentalists and to theoreticians who are now attempting to relate the X-ray structural model to the optical properties of the reaction center and ultimately to its primary biological function.
Download or read book The Photosynthetic Bacterial Reaction Center Structure and Dynamics Nato Asi Series a Life Sciences Vol 149 written by J. Breton and published by Springer. This book was released on 1988-07-01 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reaction Centers of Photosynthetic Bacteria written by M.-E. Michel-Beyerle and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reaction Centers of Photosynthetic Bacteria is an updated record on the most recent insight into the struc- ture/function relationship of reaction centers from photosynthetic bacteria. It addresses in particular, interactions and dynamics which determine the ultra-high quantum yield of photoinduced charge separation in these energy-transforming molecular machines. Of particular interest is the still controversial issue of the primary charge separation mechanism as well as the effects of well-defined modifications, introduced either by mutagenic replacements in the protein matrix or by chemical exchange of reaction center pigments. Also described are the methods used for the characterization of interactions and dynamics important for electron transfer processes in the reaction center.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1996 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical and Electro optical Properties of Bacterial Photosynthetic Reaction Centers written by Huilin Zhou (Violinist) and published by . This book was released on 1998 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Science Technology Index written by and published by . This book was released on 1997 with total page 2948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Quantum Physics of the Bacterial Photosynthetic Unit written by Thorsten Ritz and published by . This book was released on 2001 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonequilibrium Dynamics of Biomolecules written by Anthony Joseph Manzo and published by . This book was released on 2005 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photon Echo Studies on Coherence Dynamics in the Photosynthetic Bacterial Reaction Center written by Seungwan Ryu and published by . This book was released on 2013 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photosynthetic light harvesting begins with collecting ambient photons via excitation of pigment molecules. The sophisticated design of the pigment-protein complexes is based on the cooperative network among structural motifs of pigment molecules and amino acid residues in proteins to achieve the remarkable efficiency and speed in light harvesting. The insight from nature's photosynthetic nano-machinery can be translated to an optimal material design. The principle behind such inherent excitation energy transfer dynamics were revealed with the advance of the femtosecond laser technique. One of the examples is the quantum mechanical coherence excitation energy transfer observed by nonlinear photon echo technique. This dissertation presents the investigation of the bacterial reaction center complexes using electronic coherence photon echo spectroscopy. The study focused on elucidating the origin of the coherence signals and identifying quantum mechanical components relevant to the excitation energy transfer. Experimental variables affecting the coherence signals were explored for the excitation energy transfer of photosynthetic bacterial reaction center. The result showed that the vibrational coherence mimics the behavior of the electronic coherence, and the lifetime is near 2 ps. A mutant bacterial reaction center was also examined to confirm the vibrational contribution. A new polarization control experiment indicates that majority of the observed vibrational coherence is from the electronic ground state.
Download or read book The Photosynthetic Bacterial Reaction Center written by Jacques Breton and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical and ENDOR TRIPLE Resonance Studies of Conformational Changes in Bacterial Photosynthetic Reaction Centers written by Frank Müh and published by . This book was released on 1999 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photo CIDNP of Photosyntheitc Reaction Centers written by and published by . This book was released on 2005 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of Photochemically Induced Dynamic Nuclear Polarization in Photosynthetic Bacterial Reaction Centers: Wavelength and Time Dependence Solid-state NMR spectra of quinone-reduced photosynthetic bacterial reaction centers (RCs) and chromatophores exhibit certain strongly enhanced lines under illumination, a result of photochemically induced dynamic nuclear polarization (photo-CIDNP). This technique offers a new method to investigate photosynthetic electronic transactions while retaining the NMR advantages of narrow linewidths and site-specific resolution. Pulsed laser illumination at 532 nm was used as the basis for time resolved photo-CIDNP experiments, a technique not previously published for solid-state photosynthetic systems. These measurements offer insight about the origin of the polarization effects.
Download or read book Studies of Photochemically Induced Dynamic Nuclear Polarization in Photosynthetic Bacterial Reaction Centers written by Nicholas Breen and published by . This book was released on 2005 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
