Download or read book DNA Damage Recognition in Lesion Repair and Tolerance written by Hala Ouzon and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DNA Damage Recognition written by Wolfram Siede and published by CRC Press. This book was released on 2005-09-19 with total page 871 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stands as the most comprehensive guide to the subject-covering every essential topic related to DNA damage identification and repair. Covering a wide array of topics from bacteria to human cells, this book summarizes recent developments in DNA damage repair and recognition while providing timely reviews on the molecular mechanisms employe
Download or read book Mechanisms of DNA Damage Recognition in Mammalian Cells written by Hanspeter Naegeli and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The DNA Damage Response Implications on Cancer Formation and Treatment written by Kum Kum Khanna and published by Springer Science & Business Media. This book was released on 2009-09-18 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ?eld of cellular responses to DNA damage has attained widespread recognition and interest in recent years commensurate with its fundamental role in the ma- tenance of genomic stability. These responses, which are essential to preventing cellular death or malignant transformation, are organized into a sophisticated s- tem designated the “DNA damage response”. This system operates in all living organisms to maintain genomic stability in the face of constant attacks on the DNA from a variety of endogenous by-products of normal metabolism, as well as exogenous agents such as radiation and toxic chemicals in the environment. The response repairs DNA damage via an intricate cellular signal transduction network that coordinates with various processes such as regulation of DNA replication, tr- scriptional responses, and temporary cell cycle arrest to allow the repair to take place. Defects in this system result in severe genetic disorders involving tissue degeneration, sensitivity to speci?c damaging agents, immunode?ciency, genomic instability, cancer predisposition and premature aging. The ?nding that many of the crucial players involved in DNA damage response are structurally and functionally conserved in different species spurred discoveries of new players through similar analyses in yeast and mammals. We now understand the chain of events that leads to instantaneous activation of the massive cellular responses to DNA lesions. This book summarizes several new concepts in this rapidly evolving ?eld, and the advances in our understanding of the complex network of processes that respond to DNA damage.
Download or read book DNA Repair written by and published by Academic Press. This book was released on 2019-10-16 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA Repair, Volume 45 in The Enzymes series highlights new advances in the field, with this new volume presenting interesting chapters on DNA polymerase beta and other gap-filling enzymes in mammalian base excision repair, Translesion polymerases, mechanism and function, The Rev1-Pol? Mutasome: Structure and Interactions in Translesion Synthesis, Challenges for base excision repair enzymes: acquiring access to damaged DNA in chromatin Nucleotide excision repair, DNA damage recognition mechanisms in mammalian nucleotide excision repair, Advances in understanding DNA mismatch repair, and more. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in The Enzymes series
Download or read book DNA Damage and Repair in Human Tissues written by Betsy M. Sutherland and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical and chemical agents in the environment damage the DNA of humans, and pose a major threat to human health today, and to the genetic integrity of human populations. Although studies on isolated DNA in vitro, on prokaryotes, on mammalian cells in culture, and on laboratory animals have provided essential background information, it is now possible to study DNA damage and repair in human tissues directly. New techniques of high sensitivity, especially those not requiring radioactive labeling have made possible quantitation of DNA damage and repair, as well as detection of residual, unrepaired DNA lesions . In recent years, several investigators have taken up the challenge of studying damage and repair responses in humans, and we have chosen that work as the special focus of this Symposium. Major advances in under standing damage and responses in human skin, in blood cells and in human internal organs indicate three major themes. First, DNA damage levels in human tissues depend not only on the initial exposures, but also on the capapacity of that tissue for repair of the specific lesion type. Second, repair in human tissues may differ quantitatively and qualitatively from that in human cells in culture.
Download or read book DNA Repair and Mutagenesis written by Errol C. Friedberg and published by American Society for Microbiology Press. This book was released on 2005-11-22 with total page 2587 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential resource for all scientists researching cellular responses to DNA damage. • Introduces important new material reflective of the major changes and developments that have occurred in the field over the last decade. • Discussed the field within a strong historical framework, and all aspects of biological responses to DNA damage are detailed. • Provides information on covering sources and consequences of DNA damage; correcting altered bases in DNA: DNA repair; DNA damage tolerance and mutagenesis; regulatory responses to DNA damage in eukaryotes; and disease states associated with defective biological responses to DNA damage.
Download or read book Mechanisms of Genome Protection and Repair written by Dmitry O. Zharkov and published by Springer Nature. This book was released on 2020-05-07 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA is under constant challenge from environmental and endogenous metabolic assaults. Several layers of defence and repair systems allow cells to maintain stable genomes; in humans, dysfunction of these systems leads to cancer, neurodegeneration, and other pathologies. At the same time, recently it had emerged that targeted and regulated DNA damage and repair is a mechanism underlying several important cellular processes such as epigenetic demethylation and immunoglobulin gene diversification. The present collection of papers is aimed to cover new developments in the area of protective and regulatory mechanisms associated with DNA damage. The mechanisms ruling the recognition of damaged nucleotides against the vast background of normal ones are reviewed. The role of extended non-catalytic domains that are often found in eukaryotic DNA repair proteins in contrast to their downsized, catalytic-only bacterial counterparts is discussed. Among the proposed subjects are the regulatory functions of bulky covalent modifications such as poly(ADP)ribosylation and ubiquitylation in DNA damage response, especially in the context of chromatin remodelling. As opposed to DNA repair, damage tolerance allows cells to replicate with lesions in the genome; the enzymes responsible are also covered. Finally, we present examples of modern multilevel understanding of the cell function and malfunction in the wake of genotoxic assaults such as oxidative stress, abiotic environmental stress, and DNA-damaging plant toxins.
Download or read book Biological Responses to DNA Damage written by and published by CSHL Press. This book was released on 2000 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Living cells have evolved many ways of coping with metabolic events and environmental influences that damage DNA. These mechanisms, and the frequent progression to cancer that results when they go awry, are rev iewed in this volume by authors from over sixty of the world's leading laboratories. The topics discussed include DNA repair, mutagenesis and other damage-tolerance functions, checkpoint control, apoptosis, and adaptation. They draw from studies on human and yeast cells. Current, but with a valuable historical perspective, this volume has the depth and lasting value typical of this most prestigious series and is esse ntial reading for investigators of DNA replication, cell cycle control, and tumorigenesis.
Download or read book Histone Deacetylase Inhibitors as Cancer Therapeutics written by Steven Grant and published by Academic Press. This book was released on 2012-11 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information on the exciting and fast-moving field of cancer research.
Download or read book DNA Repair and Replication written by Roger J. A. Grand and published by Garland Science. This book was released on 2018-09-03 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA Repair and Replication brings together contributions from active researchers. The first part of this book covers most aspects of the DNA damage response, emphasizing the relationship to replication stress. The second part concentrates on the relevance of this to human disease, with particular focus on both the causes and treatments which make use of DNA Damage Repair (DDR) pathways. Key Selling Features: Chapters written by leading researchers Includes description of replication processes, causes of damage, and methods of repair
Download or read book Genetic Instabilities and Neurological Diseases written by Robert D. Wells and published by Elsevier. This book was released on 2011-10-13 with total page 783 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic Instabilities and Neurological Diseases covers DNA repeat instability and neurological disorders, covering molecular mechanisms of repeat expansion, pathogenic mechanisms, clinical phenotype, parental gender effects, genotype-phenotype correlation, and diagnostic applications of the molecular data. This updated edition provides updates of these repeat expansion mutations, including the addition of many new chapters, and old chapters rewritten as extensions of the previous edition. This book is an invaluable reference source for neuroscientists, geneticists, neurologists, molecular biologists, genetic counsellors and students. Contributions by most of the principal research teams in the area, edited by world-renowned leaders Lays the background for future investigations on related diseases
Download or read book Excision Repair and DNA Damage Tolerance in the Context of Nucleosomes written by Rithy Meas and published by . This book was released on 2015 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromatin is occlusive to DNA damage response factors that process DNA lesions to reduce mutations and forego programmed cell death; paradoxically, chromatin is essential for cell viability because it is required for the compaction of genomic DNA in the nucleus and modulation of metabolic processes. The primary structural component of chromatin is the nucleosome, which consists of ~147 base pairs of DNA wrapped around a histone octamer. To understand how histones contribute to DNA damage response, we analyzed amino-terminal tail (N-tail) deletions of all four canonical histones, both individually and in combination, in the budding yeast Saccharomyces cerevisiae. We found that combinatorial N-tail deletions of histones H2A and H3 (tH2A:tH3) sensitize yeast cells to the DNA alkylating agent methyl methanesulfonate (MMS), and epitasis analyses indicate that multiple DNA damage response pathways are involved in this MMS sensitivity phenotype. Interestingly, the tH2A:tH3 mutant is deficient in base excision repair (BER), a repair pathway with two subpathways that differ in repair patch sizes. We developed an in vitro assay to differentiate between these subpathways and showed that DNA lesions located in the nucleosome core are preferentially repaired by DNA polymerase beta that insert short repair patches. Additionally, the tH2A:tH3 mutant was shown to be deficient in nucleotide excision repair (NER), a repair pathway for DNA helix-distorting lesions, such as those induced by UV light. NER also has two subpathways differentiated by the presence or absence of the transcription machinery. We found that transcription-coupled NER requires the removal of the posttranslational ubiquitin moiety from H2B at lysine residue 123 to destabilize chromatin structure and allow for accessibility by repair enzymes. Altogether, our data show that even though chromatin is inhibitory to DNA damage response factors, chromatin provides signals to promote different DNA damage response pathways and subpathways, including those of BER and NER.
Download or read book Recombinational Repair of DNA Damage written by Andrei Kuzminov and published by Landes Bioscience. This book was released on 1996 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DNA Repair written by Fritz Eckstein and published by Springer. This book was released on 1998-10 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA is the central repository of genetic information in the cell, yet it is under constant attack by chemical mutagens, radiation and other processes. Cells therefore put a great deal of resources into repairing any damage to this precious store. Mechanisms of DNA repair vary greatly in their level of complexity, from specific reversal mechanisms that involve a single protein, to sequential pathways that require many enzymes. But at the heart of all these mechanisms lie proteins that recognize damage to DNA, raising important questions about how damaged DNA may be distinguished. These recognition processes are now finally yielding their secrets to structural analysis. This volume focuses on DNA repair, with an emphasis on structural data where available.
Download or read book Kinetic Gating Mechanism of DNA Damage Recognition by Rad4 XPC written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The xeroderma pigmentosum C (XPC) complex initiates nucleotide excision repair by recognizing DNA lesions before recruiting downstream factors. How XPC detects structurally diverse lesions embedded within normal DNA is unknown. Here we present a crystal structure that captures the yeast XPC orthologue (Rad4) on a single register of undamaged DNA. The structure shows that a disulphide-tethered Rad4 flips out normal nucleotides and adopts a conformation similar to that seen with damaged DNA. Contrary to many DNA repair enzymes that can directly reject non-target sites as structural misfits, our results suggest that Rad4/XPC uses a kinetic gating mechanism whereby lesion selectivity arises from the kinetic competition between DNA opening and the residence time of Rad4/XPC per site. This mechanism is further supported by measurements of Rad4-induced lesion-opening times using temperature-jump perturbation spectroscopy. Lastly, kinetic gating may be a general mechanism used by site-specific DNA-binding proteins to minimize time-consuming interrogations of non-target sites.
Download or read book DNA Damage written by Susan S. Wallace and published by . This book was released on 1994 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this collection of papers is upon the perturbations which damage introduces into DNA molecules, and how these structural changes influence the recognition and interactions of biologically important proteins with damaged DNA.
