DNA Replication: The Regulatory Mechanisms PDF Download

Author: Patrick Hughes
Publisher: Springer Science & Business Media
ISBN: 3642769888
Category : Science
Languages : en
Pages : 429

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Book Description
DNA replication is a key event in the cell cycle. Although our knowledge is far from complete and many elusive regulatory mechanisms still remain beyondour grasp, many enzymes and a multiplicity of biochemical mechanisms involved have been discovered. Recent findings in E. coli have confirmed and yet surpassed the original hypothesis of F. Jacob. In yeast and higher eucaryotes, the apparent redundancy in putative origins and initiators has made an estimation of the importance of each identified element difficult to access. In spite of well established methodologies - which are also described in the book - the origin identification in mammalian chromosomes is still a controversial subject. On the other hand, considerable advances have been made in our understanding of virus DNA replication and this continues to deepen and broaden our understanding of the controls of cellular DNA replication.

Author: Bruce Alberts
Publisher:
ISBN: 9780815332183
Category : Cytology
Languages : en
Pages : 0

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Book Description

Author: Patrick Hughes
Publisher: Springer
ISBN: 9783540546337
Category : Science
Languages : en
Pages : 422

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Book Description
DNA replication is a key event in the cell cycle. Although our knowledge is far from complete and many elusive regulatory mechanisms still remain beyondour grasp, many enzymes and a multiplicity of biochemical mechanisms involved have been discovered. Recent findings in E. coli have confirmed and yet surpassed the original hypothesis of F. Jacob. In yeast and higher eucaryotes, the apparent redundancy in putative origins and initiators has made an estimation of the importance of each identified element difficult to access. In spite of well established methodologies - which are also described in the book - the origin identification in mammalian chromosomes is still a controversial subject. On the other hand, considerable advances have been made in our understanding of virus DNA replication and this continues to deepen and broaden our understanding of the controls of cellular DNA replication.

Author: Alan Kolber
Publisher: Springer Science & Business Media
ISBN: 1468421247
Category : Science
Languages : en
Pages : 457

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Book Description
1 - Chromosome Replication in Procaryotes.- Enzymatic Aspects of Chromosome Replication in E. coli.- Escherichia coli DNA Polymerase II and III.- Initiation of DNA Synthesis.- In vitro Replication of DNA.- The Role of ATP in Chromosome Replication Studied in Toluenized Escherichia coli.- Membrane Protein Components and DNA Synthesis in Escherichia coli.- A Possible Common Role for DNA Polymerase I and Exonuclease V in Escherichia coli.- The Joining of DNA Duplexes at Their Base-Paired Ends.- The Attachment of the Bacterial Chromosome to the Cell Membrane.- DNA Replication in Bacteriophage and.

Author: Mirko Beljanski, PhD
Publisher: Demos Medical Publishing
ISBN: 1617051829
Category : Medical
Languages : en
Pages : 221

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Book Description
The Regulation of DNA Replication and Transcription explores basic processes of DNA replication and transcription in an effort to identify the mechanisms responsible for the release of genetic information and its role in the regulation of cellular events. Concerned with discovering the fundamental concept that might integrate and explain the wide range of existing lines of evidence, the author reports and interprets the results of experiments conducted in an impressive range of biological systems. Focused on complex mechanisms at the biochemical level, these studies allow analysis of the pathways involved when cells, organs and animal systems react to various trigger molecules derived from both living cells and exogenous sources. These include hormones, RNA, RNA fragments, alkaloids, actinomycin D, and phorbol esters, as well as chemical carcinogens and drugs. Comnining the results of these studies with his own extensive work in this field, the author is able to formulate a uniquely integrative biochemical model for the gene expression, demonstrating that both biological and chemically synthesized molecules can trigger the differential release of information from the DNA and thus influence cell transformation. Apart from its academic significance, the model offers high potential assistance in the search for ways to induce or control the expression of certain genes and, moreover, to promote differentiation of given cells in vitro as well as in situ.

Author: Hisao Masai
Publisher: Springer
ISBN: 9811069557
Category : Science
Languages : en
Pages : 581

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Book Description
This book reviews the latest trends and future directions of DNA replication research. The contents reflect upon the principles that have been established through the genetic and enzymatic studies of bacterial, viral, and cellular replication during the past decades. The book begins with a historical overview of the studies on eukaryotic DNA replication by Professor Thomas Kelly, a pioneer of the field. The following chapters include genome-wide studies of replication origins and initiation factor binding, as well as the timing of DNA replications, mechanisms of initiation, DNA chain elongation and termination of DNA replication, the structural basis of functions of protein complexes responsible for execution of DNA replication, cell cycle-dependent regulation of DNA replication, the nature of replication stress and cells’ strategy to deal with the stress, and finally how all these phenomena are interconnected to genome instability and development of various diseases. By reviewing the existing concepts ranging from the old principles to the newest ideas, the book gives readers an opportunity to learn how the classical replication principles are now being modified and new concepts are being generated to explain how genome DNA replication is achieved with such high adaptability and plasticity. With the development of new methods including cryoelectron microscopy analyses of huge protein complexes, single molecular analyses of initiation and elongation of DNA replication, and total reconstitution of eukaryotic DNA replication with purified factors, the field is enjoying one of its most exciting moments, and this highly timely book conveys that excitement to all interested readers.

Author: Fumio Hanaoka
Publisher: Springer
ISBN: 443155873X
Category : Science
Languages : en
Pages : 548

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Book Description
This book is a comprehensive review of the detailed molecular mechanisms of and functional crosstalk among the replication, recombination, and repair of DNA (collectively called the "3Rs") and the related processes, with special consciousness of their biological and clinical consequences. The 3Rs are fundamental molecular mechanisms for organisms to maintain and sometimes intentionally alter genetic information. DNA replication, recombination, and repair, individually, have been important subjects of molecular biology since its emergence, but we have recently become aware that the 3Rs are actually much more intimately related to one another than we used to realize. Furthermore, the 3R research fields have been growing even more interdisciplinary, with better understanding of molecular mechanisms underlying other important processes, such as chromosome structures and functions, cell cycle and checkpoints, transcriptional and epigenetic regulation, and so on. This book comprises 7 parts and 21 chapters: Part 1 (Chapters 1–3), DNA Replication; Part 2 (Chapters 4–6), DNA Recombination; Part 3 (Chapters 7–9), DNA Repair; Part 4 (Chapters 10–13), Genome Instability and Mutagenesis; Part 5 (Chapters 14–15), Chromosome Dynamics and Functions; Part 6 (Chapters 16–18), Cell Cycle and Checkpoints; Part 7 (Chapters 19–21), Interplay with Transcription and Epigenetic Regulation. This volume should attract the great interest of graduate students, postdoctoral fellows, and senior scientists in broad research fields of basic molecular biology, not only the core 3Rs, but also the various related fields (chromosome, cell cycle, transcription, epigenetics, and similar areas). Additionally, researchers in neurological sciences, developmental biology, immunology, evolutionary biology, and many other fields will find this book valuable.

Author: Monika Glinkowska
Publisher: Springer
ISBN: 3319105337
Category : Science
Languages : en
Pages : 56

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Book Description
This work describes the current knowledge of biochemical mechanisms regulating initiation of DNA replication in Escherichia coli, which focuses on the control of activity of the DnaA protein. Examples of direct linkages between DNA replication and other cellular processes are provided. In addition, similarities of the mechanisms of regulation of DNA replication operating in prokaryotic and eukaryotic cells are identified, and implications for understanding more complex processes, like carcinogenesis are suggested. Studies of recent years provided evidence that regulation of DNA replication in bacteria is more complex than previously anticipated. Multiple layers of control seem to ensure coordination of this process with the increase of cellular mass and the division cycle. Metabolic processes and membrane composition may serve as points where integration of genome replication with growth conditions occurs. It is also likely that coupling of DNA synthesis with cellular metabolism may involve interactions of replication proteins with other macromolecular complexes, responsible for various cellular processes. Thus, the exact set of factors participating in triggering the replication initiation may differ depending on growth conditions. Therefore, understanding the regulation of DNA duplication requires placing this process in the context of the current knowledge on bacterial metabolism, as well as cellular and chromosomal structure. Moreover, in both Escherichia coli and eukaryotic cells, replication initiator proteins were shown to play other roles in addition to driving the assembly of replication complexes, which constitutes another, yet not sufficiently understood, layer of coordinating DNA replication with the cell cycle.

Author: Samantha Fowler
Publisher:
ISBN: 9789888407453
Category : Science
Languages : en
Pages : 618

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Book Description
Concepts of Biology is designed for the single-semester introduction to biology course for non-science majors, which for many students is their only college-level science course. As such, this course represents an important opportunity for students to develop the necessary knowledge, tools, and skills to make informed decisions as they continue with their lives. Rather than being mired down with facts and vocabulary, the typical non-science major student needs information presented in a way that is easy to read and understand. Even more importantly, the content should be meaningful. Students do much better when they understand why biology is relevant to their everyday lives. For these reasons, Concepts of Biology is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand.We also strive to show the interconnectedness of topics within this extremely broad discipline. In order to meet the needs of today's instructors and students, we maintain the overall organization and coverage found in most syllabi for this course. A strength of Concepts of Biology is that instructors can customize the book, adapting it to the approach that works best in their classroom. Concepts of Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand--and apply--key concepts.

Author: Jelena Kusic-Tisma
Publisher: BoD – Books on Demand
ISBN: 9533072598
Category : Medical
Languages : en
Pages : 322

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Book Description
DNA replication, the process of copying one double stranded DNA molecule to produce two identical copies, is at the heart of cell proliferation. This book highlights new insights into the replication process in eukaryotes, from the assembly of pre-replication complex and features of DNA replication origins, through polymerization mechanisms, to propagation of epigenetic states. It also covers cell cycle control of replication initiation and includes the latest on mechanisms of replication in prokaryotes. The association between genome replication and transcription is also addressed. We hope that readers will find this book interesting, helpful and inspiring.