Download or read book Biochemical and Genetic Analysis of Excision DNA Repair written by Johnson Man Su Wong and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integrity of the genetic material is constantly threatened by various DNA damaging agents. Hence, multiple DNA repair pathways have evolved to eliminate damage of different origins. Nucleotide excision repair (NER) is the primary mechanism by which both 'S. cerevisiae' and human cells remove lesions, including those induced by ultraviolet light, that usually cause severe distortions of the DNA helix. I have described a simple protocol for preparing yeast whole cell extracts that can support efficient NER to facilitate biochemical studies of this repair pathway in yeast. This assay reflects ' bona fide' NER as it depends on 'RAD' genes such as ' RAD14' and 'RAD2', which are known to be essential for excision repair. Interestingly, the assay was also dependent on the ' RAD7' and 'RAD16' genes, whose precise roles in NER are uncertain. Using this system, I also demonstrated that yeast replication protein A (Rpa), encoded by the 'rfa'2 gene, is required for NER, since 'rfa2' mutations which confer enhanced UV sensitivity ' in vivo' also resulted in a deficiency in NER 'in vitro'. NER can be divided into two subpathways: global genome repair, which is involved in the repair of both active and inactive genes, and transcription-coupled repair. In the latter subpathway, lesions in the transcribed strands of active genes are more rapidly repaired, but contributions of the transcription machinery to this repair pathway are poorly understood. To determine whether the RNA polymerase elongation factor SII plays a role in excision repair, I examined the effect of deleting the SII gene of 'Saccharomyces cerevisiae'. Lack of SII activity enhanced UV sensitivity, but only in the absence of ' RAD7/16'-dependent global genome repair. This increased UV sensitivity was also seen with RNA polymerase II mutants defective in their response to SII. UV sensitivity was also conferred by other RNA polymerase II mutations that do not affect SII function. Another pathway of excision repair, base excision repair (BER), involves DNA glycosylases that recognize and excise specific types of base damage in DNA, including uracil and thymine glycol. Human uracil DNA glycosylase (UDG) was recently found to interact with the 34 kDa subunit of human RPA. To investigate whether RPA plays a role in BER in yeast and human cells, I set up ' in vitro' BER systems using yeast and HeLa cell extracts. Both of these systems appear capable of performing efficient BER in the presence of several types of lesions. I fractionated HeLa extracts to deplete endogenous RPA and I will test the ability of these fractions to perform BER. (Abstract shortened by UMI.).
Download or read book Biochemical and Genetic Analysis of Excision DNA Repair written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biochemical and Genetic Analysis of Excision DNA Repair microform written by Johnson Man Su Wong and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Research on DNA Repair written by Breehn R. Landseer and published by Nova Publishers. This book was released on 2007 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a major defence against environmental damage to cells DNA repair is present in all organisms including bacteria, yeast, drosophila, fish, amphibians, rodents and humans. DNA repair is involved in processes that minimise cell killing, mutations, replication errors, persistence of DNA damage and genomic instability. Abnormalities in these processes have been implicated in cancer and ageing. This book presents leading-edge research from around the world in this frontal field.
Download or read book DNA Damage and Repair written by Jac A. Nickoloff and published by Springer Science & Business Media. This book was released on 1998-08-12 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cutting edge reviews by leading researchers illuminate key aspects of DNA repair in mammalian systems and its relationship to human genetic disease and cancer. Major topics include UV and X-Ray repair, repair of chemical damage, recombinational repair, mismatch repair, transcription-repair coupling, and the role of DNA repair in disease prevention. Extensive up-to-date references and rigorous peer-review of each chapter make this volume definitive and bring it to the active frontiers of research.
Download or read book Molecular Biology of the Cell written by 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 Base Excision Repair of DNA Damage written by Ian D. Hickson and published by Springer Science & Business Media. This book was released on 1999-06-08 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the latest research in the field for researchers and clinicians. After a general introduction to DNA base excision repair, chapters cover uracil DNA glycosylases, repair of oxidized purines in DNA, mammalian mismatch-specific DNA glycosylases, repair of apurinic/apyrimidic sites in DNA by AP endonucleases, mutagenesis of abasic sites, a pro
Download or read book DNA Repair Part A written by and published by Elsevier. This book was released on 2006-06-06 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA Repair, Part A provides detailed coverage of modern methods for molecular analysis of enzymes and enzyme systems that function in the maintenance of genome integrity. Coverage areas include base excision repair, nucleotide excision repair, translesion DNA polymerases, mismatch repair, genetic recombination, and double strand break repair. - A laboratory standard for more than 40 years - Over 400 volumes strong - Also available on ScienceDirect - Part A of a 2-part series
Download or read book DNA Replication Recombination and Repair written by Fumio Hanaoka and published by Springer. This book was released on 2016-01-22 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Base Excision Repair Pathway written by Kishor K. Bhakat and published by Springer Nature. This book was released on 2023-09-14 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed volume provides a comprehensive set of experimental protocols and useful strategies to examine the repair of damaged bases via the Base Excision Repair (BER) pathway in vitro and in cells. Beginning with multiple molecular and cellular techniques to examine the excision of damaged bases from double-stranded DNA or DNA wrapped in a nucleosome, the book continues with sections covering procedures to detect and quantify the damaged bases, protein DNA crosslinks, and double-strand breaks, experimental procedures to identify DNA repair protein interactome by conventional tandem affinity purification followed by mass spectroscopy analysis, as well as the analysis of genome-wide binding of DNA repair proteins and copy number variations of the DNA damage response gene in tumors. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step and readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and practical, Base Excision Repair Pathway: Methods and Protocols serves as a valuable resource for novices and experts trying to examine the repair of various types of DNA lesions in vitro and in cell by the distinct set of proteins in the BER pathway.
Download or read book DNA Repair written by Fritz Eckstein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 472 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 DNA Repair Mechanisms and Their Biological Implications in Mammalian Cells written by M. Lambert and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains edited contributions from the speakers at the NATO Advanced Research Workshop on "DNA Repair Mechanisms and Their Biological Implications in Mammalian Cells" held October 1-6, 1988, at the Abbaye Royale de Fontevraud, Fontevraud France. The meeting was dedicated to Paul Howard-Flanders (Yale University, New Haven, CT. , 1919-1988), whose seminal con tributions to the DNA repair field include the cO-discovery of the excision repair pathway, the elucidation of post-repli cation repair in E. coli, the isolation of the lexA and recC mutants, and his extensive work on the enzymology of RecA. A plethora of recent developments in DNA repair mechan isms and related processes in mammalian cells have advanced our understanding of this field in a number of different areas and have given new emphasis to the ways these systems both resemble DNA repair processes in other groups of organisms in some respects yet are strikingly different from them in others. Within the past decade there have been a number of international conferences on DNA damage and repair mechanisms but none has been focused on these processes in mammalian cells.
Download or read book New Research Directions in DNA Repair written by Clark Chen and published by BoD – Books on Demand. This book was released on 2013-05-22 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for students and scientists working in the field of DNA repair. Select topics are presented here to illustrate novel concepts in DNA repair, the cross-talks between DNA repair and other fundamental cellular processes, and clinical translational efforts based on paradigms established in DNA repair. The book should serve as a supplementary text in courses and seminars as well as a general reference for biologists with an interest in DNA repair.
Download or read book DNA Repair Genetic Instability and Cancer written by Qingyi Wei and published by World Scientific. This book was released on 2007 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the elaborate surveillance systems and various DNA repair mechanisms that ensure accurate passage of genetic information onto daughter cells. In particular, it narrates how the cell cycle checkpoint and DNA repair machineries detect and restore DNA damages that are embedded in millions to billions of normal base pairs. The scope of the book ranges from biochemical analyses and structural details of DNA repair proteins, to integrative genomics and population-based studies. It provides a snapshot of current understanding about some of the major DNA repair pathways, including base-excision repair, nucleotide excision repair, mismatch repair, homologous recombination, and non-homologous end-joining as well as cell cycle checkpoints and translesion DNA synthesis. One of the particular emphases of the book is the link between inherited DNA repair deficiencies and susceptibility to cancer in the general population. For the first time, the book brings together a collection of review articles written by a group of active and laboratory-based investigators who have a clear understanding of the recent advances in the fields of DNA damage repair and genomic stability and their implications in carcinogenesis, new approaches in cancer therapy, and cancer prevention.
Download or read book DNA Repair written by Maddalena Mognato and published by BoD – Books on Demand. This book was released on 2019-06-05 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of chapters addressing different studies on DNA repair from a cellular and molecular point of view. The various contributions highlight the vastness of DNA repair process and the need for a deeper understanding. To this end, the recent considerations here presented can be a cue for scientists and students working on, or interested in, the subject of DNA repair in human cells. This book may suggest to readers new avenues of interplay between different kinds of DNA damage and cellular response for maintaining nuclear and mitochondrial genomic stability.
Download or read book DNA Damage and Repair written by A. Castellani and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: The First International Congress on DNA Damage and Repair was held in Rome, Italy, July 12-17, 1987. It was organized by the Italian Com mission for Nuclear Alternative Energy Sources. The subject of DNA damage and repair involves almost all the fields ofbidogical sciences. Some of the more prominent ones include carcino genesis, photobiology, radiation biology, aging, enzymology, genetics, and molecular biology. These individual fields have their own interna tional meetings and although the meetings often have sessions devoted to DNA repair, they do not bring together a wide diversity of international workers in the field to exchange ideas. The purpose of the Congress was to facilitate such an exchange among scientists representing many fields of endeavor and many countries. The 37 manuscripts in this volume, presented by the invited spea kers during the four and half days of the Congress, encompass the field of DNA damage and repair. They cover biological systems ranging from mo lecules to humans and deal with damages and repair after treatment of cells with various types of radiations, chemicals, and exogenous and en dogenous oxidative damages. The Congress and its Proceedings are dedicated to two international leaders in the field of DNA damage and repair, Alexander Hollaender of the United States and Adriano Buzzati Traverso of Italy. Hollaender, who died in December 1986, was one of the first investigators to recognize the damage to DNA was important in cell killing and mutagenesis. His early work indicated that cells could recover from radiation injury.
Download or read book DNA Repair Enzymes Cell Molecular and Chemical Biology written by and published by Academic Press. This book was released on 2017-06-20 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA Repair Enzymes, Part A, Volume 591 is the latest volume in the Methods in Enzymology series and the first part of a thematic that focuses on DNA repair enzymes. Topics in this new release include chapters on the Optimization of Native and Formaldehyde iPOND Techniques for Use in Suspension Cells, the Proteomic Analyses of the Eukaryotic Replication Machinery, DNA Fiber Analysis: Mind the Gap!, Comet-FISH for Ultrasensitive Strand-Specific Detection of DNA Damage in Single Cells, Examining DNA Double-Strand Break Repair in a Cell Cycle-Dependent Manner, Base Excision Repair Variants in Cancer, and Fluorescence-Based Reporters for Detection of Mutagenesis in E. coli. - Includes contributions from leading authorities working in enzymology - Focuses on DNA repair enzymes - Informs and updates on all the latest developments in the field of enzymology
