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Author: Lucy W. Barrett
Publisher: Springer Science & Business Media
ISBN: 3034806795
Category : Science
Languages : en
Pages : 63
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Book Description
There is now compelling evidence that the complexity of higher organisms correlates with the relative amount of non-coding RNA rather than the number of protein-coding genes. Previously dismissed as “junk DNA”, it is the non-coding regions of the genome that are responsible for regulation, facilitating complex temporal and spatial gene expression through the combinatorial effect of numerous mechanisms and interactions working together to fine-tune gene expression. The major regions involved in regulation of a particular gene are the 5’ and 3’ untranslated regions and introns. In addition, pervasive transcription of complex genomes produces a variety of non-coding transcripts that interact with these regions and contribute to regulation. This book discusses recent insights into the regulatory roles of the untranslated gene regions and non-coding RNAs in the control of complex gene expression, as well as the implications of this in terms of organism complexity and evolution.
Author: Lucy W. Barrett
Publisher: Springer Science & Business Media
ISBN: 3034806795
Category : Science
Languages : en
Pages : 63
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Book Description
There is now compelling evidence that the complexity of higher organisms correlates with the relative amount of non-coding RNA rather than the number of protein-coding genes. Previously dismissed as “junk DNA”, it is the non-coding regions of the genome that are responsible for regulation, facilitating complex temporal and spatial gene expression through the combinatorial effect of numerous mechanisms and interactions working together to fine-tune gene expression. The major regions involved in regulation of a particular gene are the 5’ and 3’ untranslated regions and introns. In addition, pervasive transcription of complex genomes produces a variety of non-coding transcripts that interact with these regions and contribute to regulation. This book discusses recent insights into the regulatory roles of the untranslated gene regions and non-coding RNAs in the control of complex gene expression, as well as the implications of this in terms of organism complexity and evolution.
Author: Chun-Long Chen
Publisher:
ISBN:
Category :
Languages : en
Pages : 191
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Book Description
It became clear that non-coding RNAs(ncRNA) participate in the control of gene expression at different levels of regulation. However, ncRNA genes are usually not annotated within genomes. Better understanding of genome functioning requires refined computational tools for ncRNA prediction, some are emerging in the nowadays genomic era. I developed a computational system, called snoRMP, to identify the box C/D snoRNAs that play a fundamental role in ribosome biogenesis. I applied it to the rice genome and identified 346 snoRNAs that grouped into 120 paralogous sets, sequence differences of which allowed to find clues about the mechanisms of duplication and evolution of snoRNAs. I also used the snoRMP to screen the genomes of Schizosaccharomyces pombe, Drosophila melanogaster and Chlamydomonas reinhardtii. In addition, I performed an extensive analysis of 415 rRNA and box C/D snoRNA complementary sequences involved in methylation of 124 rRNA sites from fungi, plants and animals. I could define snoRNA-rRNA duplex cores of 9 base pairs, over which single mutations had been severely counter-selected, and double compensatory mutations, retained. The Paramecium tetraurelia genome arose through at least three whole-genome duplications(WGD). In contrast with most genomes having evolved by WGDs that had lost a large fraction of the gene duplicates, the P. tetraurelia genome had not. I used motif-based methods to recover extensive contents of P. tetraurelia RNA genes, and analyzed their evolution in this specific WGD context. At last, I used a combination of comparative sequence analysis and structure predictions to analyze the whole amount of ncDNA and identify 137 ncRNA candidates.
Author: Antonin Morillon
Publisher: Elsevier
ISBN: 0081023553
Category : Science
Languages : en
Pages : 192
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Book Description
The dark side of the genome represents vast domains of the genome that are not encoding for proteins – the basic bricks of cellular structure and metabolism. Up to 98% of the human genome is non-coding and produces so-called long non-coding RNA. Some of these non-coding RNA play fundamental roles in cellular identity, cell development and cancer progression. They are now widely studied in many organisms to understand their function. This book reviews this expanding field of research and present the broad functional diversities of those molecules and their putative fundamental and therapeutic roles and develops the recent history of non-coding RNA, their very much debated classification and how they raise a formidable interest for developmental and tumorigenesis biology. Using classical examples and an extensive bibliography, the book illustrates the most studied and attractive examples of these long non-coding RNA, how they interface with epigenetics, genome integrity and expression and what are the current models of their regulatory mechanisms. This book offers a large review about the long non-coding RNA It presents the broad functional diversities of those molecules It presents pioneer works from the field Provides a comprehensive review of the field Presents fundamental and therapeutic interests
Author: Volker A. Erdmann
Publisher: Springer Science & Business Media
ISBN: 3642194540
Category : Science
Languages : en
Pages : 514
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Book Description
In the most recent years, each of the RNA silencing pathways of plants have appeared to generate ncRNAs with dedicated functions, specialized biological activities and specific functional scopes. RNA silencing plays a crucial role in coordinating the expression, stability, protection and inheritance of eukaryotic genomes. It compromises several mechanisms, that invariably depend on core small non coding RNAs and that achieve dedicated sequence-specific functions. RNA silencing has been recognized to carry critical developmental, stress-response and bodyguard functions be coordinating the expression, protection, stability and inheritance of virtually all eukaryotic genomes. Thus, the ncRNAs encompass a wide set of mechanisms that achieve specialized functions.
Author: Bibekanand Mallick
Publisher: Academic Press
ISBN: 9780128156698
Category : Science
Languages : en
Pages : 0
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Book Description
The 'RNA world' hypothesis that proposed RNA molecules as the first form of genetic material was put forwarded in the late 1980s but got impetus only recently when high-throughput sequencing technologies began unearthing new types of non-coding RNA (ncRNA) transcripts in higher eukaryotes. Till then, research on ncRNAs were primarily confined to transfer RNAs and, ribosomal RNAs, which act as the messengers of the protein synthesis and allow translation of genetic information encoded by DNA into proteins. In recent years, the integration of high-throughput genomic technologies with molecular biology and omics sciences have revolutionized the fields of ncRNA research by identifying the hidden treasures of several new types of ncRNAs encoded in the genomes of several organisms and decrypting their versatile roles in gene expression and epigenetics. Among these, two small endogenous ncRNAs, namely microRNAs (miRNAs) and piwi-interacting RNAs (piRNAs) that drive argonaute (AGO) family of proteins namely Ago and Piwi respectively and silence the expression of genes have geared up molecular and disease biology research in recent years. Both miRNAs and piRNAs are expressed in higher eukaryotes, including human and act as cellular rheostats by regulating the expression of significant fraction of genes encoded in the genomes. The aberrant expressions of these small ncRNAs within the cells cause various abnormalities and diseases including cancer. Manipulating their aberrant expression or function can serve as potential novel diagnostic/prognostic biomarkers and bring in new therapeutic strategies for multiple human diseases. This can be further translated from bench-side to clinic for improving human health. This book captures the essence of the pioneering work of some of the world's leading researchers showcasing the scientific excitements surrounding the evolving regulatory roles of miRNAs and piRNAs highlighting their potential towards the diagnosis and therapeutics of various diseases. The book is geared towards scientists, students, and will particularly appeal to active investigators in RNA biology, molecular biology, cancer research as well as clinicians and will provide them a comprehensive view of recent discoveries and research progresses to utilize miRNAs, piRNAs and their interacting proteins, Ago and Piwi for diagnosis, prognosis and therapeutics of diseases.
Author: Bibekanand Mallick
Publisher: Academic Press
ISBN: 0128156708
Category : Science
Languages : en
Pages : 387
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Book Description
The ‘RNA world’ hypothesis that proposed RNA molecules as the first form of genetic material was put forwarded in the late 1980s but got impetus only recently when high-throughput sequencing technologies began unearthing new types of non-coding RNA (ncRNA) transcripts in higher eukaryotes. Till then, research on ncRNAs were primarily confined to transfer RNAs and, ribosomal RNAs, which act as the messengers of the protein synthesis and allow translation of genetic information encoded by DNA into proteins. In recent years, the integration of high-throughput genomic technologies with molecular biology and omics sciences have revolutionized the fields of ncRNA research by identifying the hidden treasures of several new types of ncRNAs encoded in the genomes of several organisms and decrypting their versatile roles in gene expression and epigenetics. Among these, two small endogenous ncRNAs, namely microRNAs (miRNAs) and piwi-interacting RNAs (piRNAs) that drive argonaute (AGO) family of proteins namely Ago and Piwi respectively and silence the expression of genes have geared up molecular and disease biology research in recent years. Both miRNAs and piRNAs are expressed in higher eukaryotes, including human and act as cellular rheostats by regulating the expression of significant fraction of genes encoded in the genomes. The aberrant expressions of these small ncRNAs within the cells cause various abnormalities and diseases including cancer. Manipulating their aberrant expression or function can serve as potential novel diagnostic/prognostic biomarkers and bring in new therapeutic strategies for multiple human diseases. This can be further translated from bench-side to clinic for improving human health. This book captures the essence of the pioneering work of some of the world’s leading researchers showcasing the scientific excitements surrounding the evolving regulatory roles of miRNAs and piRNAs highlighting their potential towards the diagnosis and therapeutics of various diseases. The book is geared towards scientists, students, and will particularly appeal to active investigators in RNA biology, molecular biology, cancer research as well as clinicians and will provide them a comprehensive view of recent discoveries and research progresses to utilize miRNAs, piRNAs and their interacting proteins, Ago and Piwi for diagnosis, prognosis and therapeutics of diseases. Provides a unified cutting-edge resource for both miRNAs and piRNAs, two promising AGO-clade small ncRNAs, their functions and potential applications Showcase high-throughput technologies and other approaches for discovery of these small ncRNAs and their targets Unveils the diverse molecular mechanisms by which miRNAs and piRNAs regulate gene expression in animal cells Showcase recent discoveries on involvement of Argonaute and Piwi proteins in different biological processes and diseases as well as their possible use in diagnosis Report breakthroughs in the use of small ncRNAs for diagnosis and personalized therapy
Author: M.R.S. Rao
Publisher: Springer
ISBN: 9811052034
Category : Medical
Languages : en
Pages : 336
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Book Description
This contributed volume offers a comprehensive and detailed overview of the various aspects of long non-coding RNAs and discusses their emerging significance. Written by leading experts in the field, it motivates young researchers around the globe, and offers graduate and postgraduate students fascinating insights into genes and their regulation in eukaryotes and higher organisms.
Author: Jan Barciszewski
Publisher: Springer Science & Business Media
ISBN: 9780306478352
Category : Science
Languages : en
Pages : 302
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Book Description
General inspection of a role performed in the cell by RNAs allows us to distinguish three major groups of transcripts: I. protein-coding mRNAs, II. non-coding housekeeping and III. regulatory RNAs. The housekeeping RNAs include RNA classes that are generally, constitutively expressed and whose presence is required for normal function and viability of the cells. On the other hand, a group of regulatory RNAs includes RNA species that are expressed at certain stages of organism development or cell differentiation or as a response to external stimuli and can affect expression of other genes on the levels of transcription or translation. Non-coding RNA transcripts form a heterogeneous class of RNAs that can not be characterized by a single specific function. Initially, the term non-coding RNA (ncRNA) was used primarily to describe polyadenylated and a capped eukaryotic RNAs transcribed by RNA polymerase II, but lacking long open reading frames. Now, this definition can be extended to cover all RNA transcripts that do not show protein-coding capacity and is sometimes used to describe any RNA that does not encode protein, including introns. This book is an in-depth look at the function of Non-Coding RNAs and their relationship to Molecular Biology and Molecular Biology.
Author: Jan Gorodkin
Publisher: Humana
ISBN: 9781627037082
Category : Science
Languages : en
Pages : 0
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Book Description
The existence of genes for RNA molecules not coding for proteins (ncRNAs) has been recognized since the 1950's, but until recently, aside from the critically important ribosomal and transfer RNA genes, most focus has been on protein coding genes. However, a long series of striking discoveries, from RNA's ability to carry out catalytic function, to discovery of riboswitches, microRNAs and other ribo-regulators performing critical tasks in essentially all living organisms, has created a burgeoning interest in this primordial component of the biosphere. However, the structural characteristics and evolutionary constraints on RNA molecules are very different from those of proteins, necessitating development of a completely new suite of informatic tools to address these challenges. In RNA Sequence, Structure, Function: Computational and Bioinformatic Methods, expert researchers in the field describe a substantial and relevant fraction of these methodologies from both practical and computational/algorithmic perspectives. Focusing on both of these directions addresses both the biologist interested in knowing more about RNA bioinformatics as well as the bioinformaticist interested in more detailed aspects of the algorithms. Written in the highly successful Methods in Molecular Biology series format, the chapters include the kind of detailed description and implementation advice that is crucial for getting optimal results. Thorough and intuitive, RNA Sequence, Structure, Function: Computational and Bioinformatic Methods aids scientists in continuing to study key methods and principles of RNA bioinformatics.
Author: Nils Walter
Publisher: Springer Science & Business Media
ISBN: 3540708405
Category : Science
Languages : en
Pages : 400
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Book Description
The 2006 Nobel Prize in Physiology or Medicine was awarded to the discoverers of RNA interference, Andrew Fire and Craig Mello. This prize, which follows “RNA” Nobels for splicing and RNA catalysis, highlights just one class of recently discovered non-protein coding RNAs. Remarkably, non-coding RNAs are thought to outnumber protein coding genes in mammals by perhaps as much as four-fold. In fact, it appears that the complexity of an organism correlates with the fraction of its genome devoted to non-protein coding RNAs. Essential biological processes as diverse as cell differentiation, suppression of infecting viruses and parasitic tra- posons, higher-level organization of eukaryotic chromosomes, and gene expression are found to be largely directed by non-protein coding RNAs. Currently, bioinformatic, high-throughput sequencing, and biochemical approaches are identifying an increasing number of these RNAs. Unfortunately, our ability to characterize the molecular details of these RNAs is significantly lacking. The biophysical study of these RNAs is an emergent field that is unraveling the molecular underpinnings of how RNA fulfills its multitude of roles in sustaining cellular life. The resulting understanding of the physical and chemical processes at the molecular level is critical to our ability to harness RNA for use in biotechnology and human therapy, a prospect that has recently spawned a multi-billion dollar industry.
