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Author : Satish Kumar
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (584 download)
Download or read book Electron Transfer Reactions in Electrostatic Polypeptide-based Assemblies written by Satish Kumar and published by . This book was released on 2003 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 784 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Scott Michael Tremain
Publisher :
ISBN 13 :
Total Pages : 222 pages
Book Rating : 4.:/5 (517 download)
Download or read book Electron-transfer Reactivity of Metalloproteins in Folded, Partially Unfolded, and Completely Unfolded Forms written by Scott Michael Tremain and published by . This book was released on 2002 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because metalloproteins act as electron carriers in essential biological processes, such as respiration, photosynthesis, and metabolism, mechanisms of their electron-transfer reactions are being studied vigorously. The goal for many years has been to understand how protein structure and the structure of the redox center itself influence the rate constants for electron transfer between proteins. Toward this goal, we strive to understand how protein conformation modulates electron-transfer reactivity in heme proteins. We investigated photoinduced electron-transfer reactions of folded, partially unfolded, and completely unfolded zinc cytochrome c (Zncyt) with various inorganic and protein electron acceptors. In our studies of Zncyt in the folded conformation, photoinduced reactions of the excited triplet state of Zncyt(3Zncyt) with iron(III) cytochrome c, iron(II) cytochrome c, metal-free porphyrin cytochrome c, and heme-free apocytochrome c revealed the mechanism of quenching. Electron transfer from 3Zncyt to iron(III) cytochrome c is a more efficient quenching mechanism than energy transfer and enhanced radiationless decay at high ionic strength. Iron-free porphyrin cytochrome c and iron(II) cytochrome c quenches 3Zncyt by energy transfer. To study the effect of protein conformation on reactivity, we compared the electron-transfer properties of 3Zncyt in the folded, molten-globule, and completely unfolded forms toward the following four oxidative quenchers: Fe(CN)63−, Co(acac)3, Co(phen)33, and iron(III) cytochrome c. The observed bimolecular rate constants show electron-transfer reactivity depends mostly on electrostatic interactions and the degree of porphyrin exposure as the protein unfolds. Ionic strength and pH are chosen in some cases to bring out, but in most cases to minimize, effects of electrostatic interactions between Zncyt and the oxidative quenchers, so that effects of conformation on reactivity become discernible. Using the electroneutral complex Co(acac)3 as a quencher, we eliminated the electrostatic effects and assessed only the consequences of porphyrin exposure upon partial and complete unfolding of the protein for the electron-transfer reactivity. The biomolecular rate constant for the reaction of 3Zncyt and Co(acac)3 increases 10-fold upon partial unfolding into the molten-globule form and approximately 50-fold upon complete unfolding of Zncyt. Electroneutral inorganic complexes are sensitive probes of the amount of partial and complete unfolding in zinc-substituted heme proteins.
Author :
Publisher :
ISBN 13 :
Total Pages : 776 pages
Book Rating : 4.3/5 (91 download)
Download or read book Research Awards Index written by and published by . This book was released on 1989 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xuehai Yan
Publisher : John Wiley & Sons
ISBN 13 : 3527841253
Total Pages : 933 pages
Book Rating : 4.5/5 (278 download)
Download or read book Peptide Self-Assembly and Engineering written by Xuehai Yan and published by John Wiley & Sons. This book was released on 2024-02-09 with total page 933 pages. Available in PDF, EPUB and Kindle. Book excerpt: Peptide Self-Assembly and Engineering State-of-the-art research in peptide self-assembly, with coverage of fundamental aspects of how peptides self-assemble and an extensive number of applications Peptide Self-Assembly and Engineering: Fundamentals, Structures, and Applications (2V set) covers the latest progresses in the field of peptide self-assembly and engineering, including the fundamental principles of peptide self-assembly, new theory of nucleation and growth, thermodynamics and kinetics, materials design rules, and precisely controlled structures and unique functions. The broad contents from this book enable readers to obtain a systematical and comprehensive knowledge in the field of peptide self-assembly and engineering. Contributed by the leading scientists and edited by a highly qualified academic and an authority in the field, Peptide Self-Assembly and Engineering includes information on: Emerging areas in peptide assembly, such as immune agents, bioelectronics, energy conversion, flexible sensors, biomimetic catalysis, and more Existing applications in biomedical engineering, nanotechnology, and photoelectronics, including tissue engineering, drug delivery, and biosensing devices History of peptide self-assembly for design of functional materials and peptides’ unique mechanical, optical, electronic, and biological properties Various solvent conditions, such as pH, ionic strength, and polarity, that can affect the structure and stability of peptide assemblies A very comprehensive reference covering the latest progresses in the field of peptide self-assembly and engineering, Peptide Self-Assembly and Engineering is an essential resource for all scientists performing research intersecting with the subject, including biochemists, biotechnologists, pharmaceutical chemists, protein chemists, materials scientists, and medicinal chemists.
Author : Julian J. Eaton-Rye
Publisher : Frontiers Media SA
ISBN 13 : 2889452336
Total Pages : 317 pages
Book Rating : 4.8/5 (894 download)
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.
Author : Kenji Kano
Publisher : Springer Nature
ISBN 13 : 9811589607
Total Pages : 135 pages
Book Rating : 4.8/5 (115 download)
Download or read book Enzymatic Bioelectrocatalysis written by Kenji Kano and published by Springer Nature. This book was released on 2020-11-13 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamental aspects of the electrochemistry and redox enzymes that underlie enzymatic bioelectrocatalysis, in which a redox enzyme reaction is coupled with an electrode reaction. Described here are the basic concept and theoretical aspects of bioelectrocatalysis and the various experimental techniques and materials used to study and characterize related problems. Also included are the various applications of bioelectrocatalysis to bioelectrochemical devices including biosensors, biofuel cells, and bioreactors. This book is a unique source of information in the area of enzymatic bioelectrocatalysis, approaching the subject from a cross-disciplinary point of view.
Author :
Publisher :
ISBN 13 :
Total Pages : 1104 pages
Book Rating : 4.3/5 (91 download)
Download or read book Biomedical Index to PHS-supported Research written by and published by . This book was released on 1991 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher :
ISBN 13 :
Total Pages : 1064 pages
Book Rating : 4.:/5 (319 download)
Download or read book Biomedical Index to PHS-supported Research: pt. A. Subject access A-H written by and published by . This book was released on 1992 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : American Chemical Society. Committee on Professional Training
Publisher :
ISBN 13 :
Total Pages : 1932 pages
Book Rating : 4.:/5 (318 download)
Download or read book Directory of Graduate Research written by American Chemical Society. Committee on Professional Training and published by . This book was released on 2005 with total page 1932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Author :
Publisher :
ISBN 13 :
Total Pages : 1844 pages
Book Rating : 4.3/5 (243 download)
Download or read book Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Colin Kleanthous
Publisher : Frontiers in Molecular Biology
ISBN 13 : 9780199637607
Total Pages : 370 pages
Book Rating : 4.6/5 (376 download)
Download or read book Protein-protein Recognition written by Colin Kleanthous and published by Frontiers in Molecular Biology. This book was released on 2000 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of Protein-Protein Recognition is to bring together concepts and systems pertaining to protein-protein interactions in a single unifying volume. In the light of the information from the genome sequencing projects and the increase in structural information it is an opportune time totry to make generalizations about how and why proteins form complexes with each other. The emphasis of the book is on heteromeric complexes (complexes in which each of the components can exist in an unbound state) and will use well-studied model systems to explain the processes of formingcomplexes. After an introductory section on the kinetics, thermodynamics, analysis, and classification of protein-protein interactions, weak, intermediate, and high affinity complexes are dealt with in turn. Weak affinity complexes are represented by electron transfer proteins and integrincomplexes. Anti-lysozyme antibodies, the MHC proteins and their interactions with T-cell receptors, and the protein interactions of eukaryotic signal transduction are the systems used to explain complexes with intermediate affinities. Finally, tight binding complexes are represented by theinteraction of protein inhibitors with serine proteases and by nuclease inhibitor complexes. Throughout the chapters common themes are the technologies which have had the greatest impact, how specificity is determined, how complexes are stabilized, and medical and industrial applications.
Author : Bang-Ce Ye
Publisher : Springer Science & Business Media
ISBN 13 : 3642295436
Total Pages : 83 pages
Book Rating : 4.6/5 (422 download)
Download or read book Nano-Bio Probe Design and Its Application for Biochemical Analysis written by Bang-Ce Ye and published by Springer Science & Business Media. This book was released on 2012-05-08 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, Prof. Ye and his coworkers propose and review the concept of nano-bio probe design for biochemical analysis on the basis of their recent published works. A unique biochemical analysis technology based on fluorescence polarization enhanced by nanoparticles is described here with successful applications in environmental monitoring, rapid and sensitive sensing protease activity and high-throughput screening of inhibitors. Furthermore, they introduce a versatile molecular beacon (MB)-like probe for the multiplex sensing of targets such as sequence-specific DNA, protein, metal ions and small molecule compounds based on the self-assembled biomolecule-graphene conjugates. Besides, some colorimetric and luminescence probes utilizing metal nanoparticles for biochemical applications are also presented, such as chiral enantiomer discrimination and separation, environmental monitoring, clinic diagnosis and etc.
Author : Edward I. Stiefel
Publisher :
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.3/5 (91 download)
Download or read book Molybdenum Enzymes, Cofactors, and Model Systems written by Edward I. Stiefel and published by . This book was released on 1993 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on recent advances in the molybdenum enzymes Moco and FeMoco and their model systems. Discusses the recent crystallographic determination of the structure of the molybdenum-iron protein in the nitrogenase enzyme. Highlights the latest results on the molybdenum cofactor, Moco, including the recently determined full organic structure. Includes an overview of molybdenum in biology and the role of molybdoenzymes in the nitrogen, sulfur, and carbon cycles.
Author :
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Katharina M. Fromm
Publisher : MDPI
ISBN 13 : 3039363085
Total Pages : 284 pages
Book Rating : 4.0/5 (393 download)
Download or read book Radically Different—A Themed Issue in Honor of Professor Bernd Giese on the Occasion of His 80th Birthday written by Katharina M. Fromm and published by MDPI. This book was released on 2020-12-02 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue came together thanks to contributions from friends and colleagues of Prof. Bernd Giese on behalf of his 80th birthday on 2 June 2020. Reflecting on the varied interests of Bernd in all areas of chemistry, this issue contains work, including historical work, on inorganic coordination chemistry, nanomaterials, theory, and organic and radical chemistry—Bernd’s core expertise. It is wonderful that so many different publications came together from all over the world, as both review articles and original contributions, making this Special Issue worthwhile reading.
Author : Mårten Wikström
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (319 download)
Download or read book Cytochrome Oxidase written by Mårten Wikström and published by . This book was released on 1981 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
