Download or read book Photosynthetic Protein Complexes written by Petra Fromme and published by John Wiley & Sons. This book was released on 2008-11-21 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perfectly timed, this handbook covers many important aspects of the topic that have only recently been understood -- making this a truly comprehensive work. With its extensive use of color, it surveys the most important proteins involved in photosynthesis, discussing the structural information we have at our disposal. Most chapters are dedicated to one protein, while a few also summarize general associated concepts. The book also has an accompanying website that contains data files and animations to allow readers to visualize many of the complicated proteins presented. A must for anyone studying photosynthesis and structural biology, as well as those working in the plant and crop biotechnology industry.
Download or read book Solar Energy Harvesting with Photosynthetic Pigment Protein Complexes written by Sai Kishore Ravi and published by Springer Nature. This book was released on 2020-08-24 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book chronicles a few approaches to constructing biohybrid devices using photosynthetic protein complexes. Can the abundantly available solar energy be tapped to meet our rising energy demands using green and cheap active materials? Exploring nature’s own tiny solar factories, the photosynthetic proteins could hold the key. Photosynthetic pigment-protein complexes found in plants and certain types of bacteria transduce sunlight into biologically useful forms of energy through a photochemical charge separation that has a 100% quantum efficiency. Getting the photoproteins to perform this efficient energy conversion reaction in a semi-artificial setup is central to developing biohybrid solar technologies, a promising green alternative to today’s photovoltaics. This book looks into the existing challenges and opportunities in the field of biohybrid photovoltaics and provides a few prospective methods of enhancing the photocurrent and photovoltage in these devices. The book targets the readership of students, academics, and industrial practitioners who are interested in alternative solar technologies.
Download or read book Assembly of the Photosystem II Membrane Protein Complex of Oxygenic Photosynthesis written by Julian J. Eaton-Rye and published by Frontiers Media SA. This book was released on 2017-08-08 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photosystem II is a 700-kDa membrane-protein super-complex responsible for the light-driven splitting of water in oxygenic photosynthesis. The photosystem is comprised of two 350-kDa complexes each made of 20 different polypeptides and over 80 co-factors. While there have been major advances in understanding the mature structure of this photosystem many key protein factors involved in the assembly of the complex do not appear in the holoenzyme. The mechanism for assembling this super-complex is a very active area of research with newly discovered assembly factors and subcomplexes requiring characterization. Additionally the ability to split water is inseparable from light-induced photodamage that arises from radicals and reactive O2 species generated by Photosystem II chemistry. Consequently, to sustain water splitting, a “self repair” cycle has evolved whereby damaged protein is removed and replaced so as to extend the working life of the complex. Understanding how the biogenesis and repair processes are coordinated is among several important questions that remain to be answered. Other questions include: how and when are the inorganic cofactors inserted during the assembly and repair processes and how are the subcomplexes protected from photodamage during assembly? Evidence has also been obtained for Photosystem II biogenesis centers in cyanobacteria but do these also exist in plants? Do the molecular mechanisms associated with Photosystem II assembly shed fresh light on the assembly of other major energy-transducing complexes such as Photosystem I or the cytochrome b6/f complex or indeed other respiratory complexes? The contributions to this Frontiers in Plant Science Research Topic are likely to reveal new details applicable to the assembly of a range of membrane-protein complexes, including aspects of self-assembly and solar energy conversion that may be applied to artificial photosynthetic systems. In addition, a deeper understanding of Photosystem II assembly — particularly in response to changing environmental conditions — will provide new knowledge underpinning photosynthetic yields which may contribute to improved food production and long-term food security.
Download or read book Interactions Between Pigments in Photosynthetic Protein Complexes written by Erik J. Lous and published by . This book was released on 1988 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pigment Protein Complexes in Plastids written by Christer Sundqvist and published by Elsevier. This book was released on 2013-09-17 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pigment-Protein Complexes in Plastids: Synthesis and Assembly covers the different aspects of biosynthesis, assembly, and function of pigment-protein complexes. This book focuses on the molecular biology and physiological relevance of chlorophyll-protein complexes. The regulation and biosynthesis of chlorophyll proteins that involve a coordinated expression of nuclear and plastid genes and require communication among the cell organelles to respond properly to changing light and temperature conditions are also deliberated. This publication is intended for researchers in the fields of plant molecular biology, genetics, plant physiology and biochemistry, and cell biology, as well as students and teachers in agriculture, horticulture, biology, and biochemistry interested in pigment-protein complexes.
Download or read book Photovoltaic Devices Using Photosynthetic Protein Complexes written by Rupa Das and published by . This book was released on 2004 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photosynthetic proteins have been used as an active material in design of organic solar cells. Traditional organic solar cells have the limitation of not being able to absorb light in the visible-NIR region of the solar spectrum. This region corresponds to over 70% power of the total solar radiation. Using molecular proteins obtained from nature these limitations can be overcome. Biological photosynthetic complexes contain reaction centers with a quantum yield of>95% and a bandgap of less than l.leV allowing absorption in the 600-11 00nm visible-NIR range. Two types of photosynthetic complexes are employed to demonstrate the generality of the solid state integration technique to make solar cells. The simplest photosynthetic complex used is a bacterial reaction center (RC), isolated from the purple bacterium R. sphaeroides. The other protein being used is Photosystem I (PSI), a much larger complex, which is isolated from spinach chloroplasts. Electronic integration of devices is achieved by depositing organic semiconducting protective layer over a self-assembled monolayer of photosynthetic reaction centers oriented via an engineered metal-affinity polyhistidine tag. Various analytical and spectroscopic techniques have been used to examine solution spectrum and solid state device characteristics. Reasonable efficiencies have been obtained which demonstrates applicability of such techniques. The efficiency obtained is higher than a wet cell made using same proteins. The next immediate goal is to optimize processing conditions and therefore improve efficiency to reach levels comparable traditional organic solar cells.
Download or read book Molecular Biology of The Cell written by Bruce Alberts and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regulation of Photosynthesis written by Eva-Mari Aro and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the expression of photosynthesis related genes including regulation both at transcriptional and translational levels. It reviews biogenesis, turnover, and senescence of thylakoid pigment protein complexes and highlights some crucial regulatory steps in carbon metabolism.
Download or read book Optical Spectroscopy of Photosynthetic Complexes written by Nicoleta Herascu and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nature of Photosystem I written by Merri Patricia Skrdla and published by . This book was released on 1986 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Light Harvesting Antennas in Photosynthesis written by B.R. Green and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light-Harvesting Antennas in Photosynthesis is concerned with the most important process on earth - the harvesting of light energy by photosynthetic organisms. This book provides a comprehensive treatment of all aspects of photosynthetic light-harvesting antennas, from the biophysical mechanisms of light absorption and energy transfer to the structure, biosynthesis and regulation of antenna systems in whole organisms. It sets the great variety of antenna pigment-protein complexes in their evolutionary context and at the same time brings in the latest hi-tech developments. The book is unique in the degree to which it emphasizes the integration of molecular biological, biochemical and biophysical approaches. Overall, a well-organized, understandable, and comprehensive volume. It will be a valuable resource for both graduate students and their professors, and a helpful library reference book for undergraduates.
Download or read book Pigment Stoichiometry of Photosynthetic Multiple protein Complexes from Dark and High Light Treated Plants written by Angela Iue-Chih Lee and published by . This book was released on 1995 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxygenic Photosynthesis The Light Reactions written by Donald R. Ort and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structure and function of the components of the photosynthetic apparatus and the molecular biology of these components have become the dominant themes in advances in our understanding of the light reactions of oxygenic photosynthesis. Oxygenic Photosynthesis: The Light Reactions presents our current understanding of these reactions in thylakoid membranes. Topics covered include the photosystems, the cytochrome b6-f complex, plastocyanin, ferredoxin, FNR, light-harvesting complexes, and the coupling factor. Chapters are also devoted to the structure of thylakoid membranes, their lipid composition, and their biogenesis. Updates on the crystal structures of cytochrome f, ATP synthase and photosystem I are presented and a section on molecular biology and evolution of the photosynthetic apparatus is also included. The chapters in this book provide a comprehensive overview of photosynthetic reactions in eukaryotic thylakoids. The book is intended for a wide audience, including graduate students and researchers active in this field, as well as those individuals who have interests in plant biochemistry and molecular biology or plant physiology.
Download or read book Pigment protein Complexes of Photosynthetic Bacteria written by Philip Haworth and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Photosynthetic Membrane written by Alexander V. Ruban and published by John Wiley & Sons. This book was released on 2012-09-17 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proteins that gather light for plant photosynthesis are embedded within cell membranes in a site called the thylakoid membrane (or the "photosynthetic membrane"). These proteins form the light harvesting antenna that feeds with energy a number of vital photosynthetic processes such as water oxidation and oxygen evolution, the pumping of protons across the thylakoid membranes coupled with the electron transport chain of the photosystems and cytochrome b6f complex, and ATP synthesis by ATP synthase utilizing the generated proton gradient. The Photosynthetic Membrane: Molecular Mechanisms and Biophysics of Light Harvesting is an introduction to the fundamental design and function of the light harvesting photosynthetic membrane, one of the most common and most important structures of life. It describes the underlying structure of the membrane, the variety and roles of the membrane proteins, the atomic structures of light harvesting complexes and their macromolecular assemblies, the molecular mechanisms and dynamics of light harvesting and primary energy transformations, and the broad range of adaptations to different light environments. The book shows, using the example of the photosynthetic membrane, how complex biological structures utilize principles of chemistry and physics in order to carry out biological functions. The Photosynthetic Membrane: Molecular Mechanisms of Light Harvesting will appeal to a wide audience of undergraduate and postgraduate students as well as researchers working in the fields of biochemistry, molecular biology, biophysics, plant science and bioengineering.
Download or read book Mass Spectrometry based Structural Analysis of Photosynthetic Protein Assemblies written by Yue Lu (Biochemist) and published by . This book was released on 2017 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on using mass spectrometry-based techniques to study photosynthetic protein assemblies. Photosynthesis is a process that converts light energy into chemical energy, the basis of most life on Earth. The two most crucial protein machineries involved in this process are reaction center and light harvesting complexes. They are usually giant protein complexes with different numbers of co-factors. In a more expanded sense, photosynthesis is not just about the utilization of solar energy, the regulation of light energy is also essential as excess light energy is detrimental to photosynthesis organisms. Again, protein assemblies play an indispensable role in this process. The knowledge of the structure and function as well as the molecular mechanism of those protein complexes are desired.Today, mass spectrometry is being widely used in proteomics studies. Its capabilities include but are not limited to the protein primary structure investigation. The development of MS-based footprinting, native MS and membrane protein MS detection platforms largely benefit the study of photosynthetic proteins. The MS-based footprinting technique can investigate protein conformational change upon its binding to other molecules or under the stimulus of pH change or other factors. Native MS can investigate the conformation and topology of protein complexes in a near-native environment where the non-covalent interactions are preserved. Membrane proteins are notoriously difficult to study. The development of MS-based membrane protein detection platforms largely benefits the study of photosynthesis, as reaction center and light-harvesting complexes are usually membrane proteins.In this dissertation, a variety of MS-based techniques were utilized to study reaction center proteins, light harvesting proteins and the proteins involved in the photoprotection process. We utilized top-down MS to study the components as well the primary structure of LH2 from a purple bacterium (Rb. sphaeroides), which reveals a new post-translational modification and mutation information. In addition, we developed a MS-based platform to footprint this LH2, investigating its topology in a lipid bilayer. The reaction center from another purple bacterium (B. viridis) was studied by both bottom-up and top-down MS and lots of unexpected mutations were identified. We also conducted a native MS study on this reaction center, and the capabilities of retaining the co-factors as well as its collisional cross section in the gas phase are discussed. Lastly, we study the orange carotenoid protein (OCP) and the fluorescence recovery protein, two major players in the non-photochemical quenching process in cyanobacteria. We utilized MS-based techniques to probe the conformation and structure of these two proteins and finally proposed a mechanism for non-photochemical quenching in cyanobacteria.
Download or read book Excited State Dynamics and Interactions in Pigment protein Complexes from Photosynthetic Bacteria written by Simone Irene Elisabeth Vulto and published by . This book was released on 1999 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
