In Vitro Mutagenesis


Book Description

In vitro mutagenesis remains a critical experimental approach for investigating gene and protein function at the cellular level. This volume provides a wide variety of updated and novel approaches for performing in vitro mutagenesis using such methods as genome editing, transposon (Tn) mutagenesis, site-directed, and random mutagenesis. In Vitro Mutagenesis: Methods and Protocols guides readers through methods for gene and genome editing, practical bioinformatics approaches for identifying mutagenesis targets, and novel site-directed and random mutagenesis approaches aimed at gaining a better understanding of protein-protein and protein-cofactor interactions. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, In Vitro Mutagenesis: Methods and Protocols aims to provide a highly accessible and practical manual for current and future molecular biology researchers, from the beginner practitioner to the advanced investigator in fields such as molecular genetics, biochemistry, and biochemical and metabolic engineering.




In Vitro Mutagenesis Protocols


Book Description

Hands-on researchers with proven track records describe in stepwise fashion their advanced mutagenesis techniques. The contributors focus on improvements to conventional site-directed mutagenesis, including a chapter on chemical site-directed mutagenesis, PCR-based mutagenesis and the modifications that allow high throughput mutagenesis experiments, and mutagenesis based on gene disruption (both in vitro- and in situ-based). Additional methods are provided for in vitro gene evolution; for gene disruption based on recombination, transposon, and casette mutagenesis; and for facilitating the introduction of multiple mutations. Time-tested and highly practical, the protocols in In Vitro Mutagenesis Protocols, 2nd Edition offer today's molecular biologists reliable and powerful techniques with which to illuminate the proteome.




In Vitro Mutagenesis Protocols


Book Description

In In Vitro Mutagenesis Protocols leading experts from industrial and academic laboratories describe easily reproducible procedures for site-directed and random mutagenesis. Site-directed protocols include those based on strand-selection, PCR (including "splicing by overlap extension" and the "megaprimer" procedure), the ligase chain reaction, positive antibiotic selection, unique restriction site elimination, gapped heteroduplex formation, and solid-phase capture with the biotin/ strepavidin system. Many techniques can be used with virtually any double-stranded DNA plasmid. The random mutagenesis protocols include methods based on PCR, degenerate oligonucleotides, cassette mutagenesis, nested deletion mutagenesis, and a specialized E. coli mutator strain. These invaluable protocols facilitate the study of gene regulation and structure/function relationships in proteins and permit modification of DNA sequences for purposes such as vector construction.




Protocols for Micropropagation of Woody Trees and Fruits


Book Description

Micropropagation has become a reliable and routine approach for large-scale rapid plant multiplication, which is based on plant cell, tissue and organ culture on well defined tissue culture media under aseptic conditions. A lot of research efforts are being made to develop and refine micropropagation methods and culture media for large-scale plant multiplication of several number of plant species. However, many forest and fruit tree species still remain recalcitrant to in vitro culture and require highly specific culture conditions for plant growth and development. The recent challenges on plant cell cycle regulation and the presented potential molecular mechanisms of recalcitrance are providing excellent background for understanding on totipotency and what is more development of micropropagation protocols. For large-scale in vitro plant production the important attributes are the quality, cost effectiveness, maintenance of genetic fidelity, and long-term storage. The need for appropriate in vitro plant regeneration methods for woody plants, including both forest and fruit trees, is still overwhelming in order to overcome problems facing micropropagation such as somaclonal variation, recalcitrant rooting, hyperhydricity, polyphenols, loss of material during hardening and quality of plant material. Moreover, micropropagation may be utilized, in basic research, in production of virus-free planting material, cryopreservation of endangered and elite woody species, applications in tree breeding and reforestation.




Somaclonal Variation and Induced Mutations in Crop Improvement


Book Description

Genetic variability is an important parameter for plant breeders in any con ventional crop improvement programme. Very often the desired variation is un available in the right combination, or simply does not exist at all. However, plant breeders have successfully recombined the desired genes from cultivated crop gerrnplasm and related wild species by sexual hybridization, and have been able to develop new cultivars with desirable agronomie traits, such as high yield, disease, pest, and drought resistance. So far, conventional breeding methods have managed to feed the world's ever-growing population. Continued population growth, no further scope of expanding arable land, soil degradation, environ mental pollution and global warrning are causes of concern to plant biologists and planners. Plant breeders are under continuous pressure to improve and develop new cultivars for sustainable food production. However, it takes several years to develop a new cultivar. Therefore, they have to look for new technologies, which could be combined with conventional methods to create more genetic variability, and reduce the time in developing new cultivars, with early-maturity, and improved yield. The first report on induced mutation of a gene by HJ. Muller in 1927 was a major mi1estone in enhancing variation, and also indicated the potential applica tions of mutagenesis in plant improvement. Radiation sources, such as X-rays, gamma rays and fast neutrons, and chemical mutagens (e. g. , ethyl methane sulphonate) have been widely used to induce mutations.




In Vitro Mutagenesis: Methods and Protocols


Book Description

In vitro mutagenesis remains a critical experimental approach for investigating gene and protein function at the cellular level. This volume provides a wide variety of updated and novel approaches for performing in vitro mutagenesis using such methods as genome editing, transposon (Tn) mutagenesis, site-directed, and random mutagenesis. In Vitro Mutagenesis: Methods and Protocols guides readers through methods for gene and genome editing, practical bioinformatics approaches for identifying mutagenesis targets, and novel site-directed and random mutagenesis approaches aimed at gaining a better understanding of protein-protein and protein-cofactor interactions. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, In Vitro Mutagenesis: Methods and Protocols aims to provide a highly accessible and practical manual for current and future molecular biology researchers, from the beginner practitioner to the advanced investigator in fields such as molecular genetics, biochemistry, and biochemical and metabolic engineering.




Mutagenicity: Assays and Applications


Book Description

Mutagenicity: Assays and Applications presents an extensive examination of the detection, assessment and future of mutagenicity, particularly as it concerns human health and the environment. Chapters focused on specific types of mutagens or testing methods for their detection collectively explore the current state of human and environmental mutagenesis, future perspectives and regulatory needs. The test procedures for measuring mutagenicity, their advantages and limitations are described with practical and procedural detail, along with their presentation and data processing aspects. It is an essential reference covering the breadth and depth of the field of mutagenicity studies and regulation. By providing both important introductory material and practical assays and applications, this book is useful to graduate students, academic and industry researchers and regulators at various stages of their careers, leading to improved risk assessment and regulation. - Presents an up-to-date and in-depth review of the current state of mutagenesis research - Draws upon the combined experience and expertise of an international group of highly respected editors and chapter authors - Provides an introduction to the concept of mutagenesis with particular consideration given to novel chemicals and materials




Genome Editing in Neurosciences


Book Description

Innovations in molecular biology are allowing neuroscientists to study the brain with unprecedented resolution, from the level of single molecules to integrated gene circuits. Chief among these innovations is the CRISPR-Cas genome editing technology, which has the precision and scalability to tackle the complexity of the brain. This Colloque Médecine et Recherche has brought together experts from around the world that are applying genome editing to address important challenges in neuroscience, including basic biology in model organisms that has the power to reveal systems-level insight into how the nervous system develops and functions as well as research focused on understanding and treating human neurological disorders. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.




Microbial genetics applied to biotechnology :


Book Description

This book describes techniques of microbial genetics and how they may be applied to biotechnology. The text is concerned largely with the application of these techniques to microbial technology. We have therefore utilised illustrative material that is given in our own courses in applied micro biology. The book assumes in the reader a basic knowledge of microbial will prove useful to under genetics and industrial microbiology. We hope it graduates, postgraduates and others taking courses in applied micro biology. We would like to thank various colleagues, including John Carter, Julian Davies, Gordon Dougan, David Hopwood, Gwyn Humphreys, Alan McCarthy, David O'Connor, Tony Hart, Steve Oliver, Roger Pickup, Hilary Richards, Bob Rowlands, David Sherratt, Peter Strike, Richard Sykes and Liz Wellington, all of whom provided information at various stages during the writing of this book. Many thanks are also due to Linda Marsh for patiently typing the many drafts of the manuscript. 1 Introduction Natural genetic variation has always been exploited by man to improve the properties of microbial strains. Spontaneous mutations that arise in micro bial populations and that have properties advantageous to man have been gradually selected over centuries of use. However, it is only since the development of modem genetic techniques that more rational approaches have been possible. Such newer technologies have permitted the tailoring of microorganisms, plant or animal cells to manufacture specific products of commercial or social benefit and to manage the environment.




Safety of Genetically Engineered Foods


Book Description

Assists policymakers in evaluating the appropriate scientific methods for detecting unintended changes in food and assessing the potential for adverse health effects from genetically modified products. In this book, the committee recommended that greater scrutiny should be given to foods containing new compounds or unusual amounts of naturally occurring substances, regardless of the method used to create them. The book offers a framework to guide federal agencies in selecting the route of safety assessment. It identifies and recommends several pre- and post-market approaches to guide the assessment of unintended compositional changes that could result from genetically modified foods and research avenues to fill the knowledge gaps.