Controlling RNA Polymerase II Transcriptional Elongation Through Positive and Negative Regulation of P-TEFb PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Controlling RNA Polymerase II Transcriptional Elongation Through Positive and Negative Regulation of P-TEFb PDF full book. Access full book title Controlling RNA Polymerase II Transcriptional Elongation Through Positive and Negative Regulation of P-TEFb by Zhiyuan Yang. Download full books in PDF and EPUB format.
Author: Zhiyuan Yang
Publisher:
ISBN:
Category :
Languages : en
Pages : 302
Get Book Here
Book Description
Author: Zhiyuan Yang
Publisher:
ISBN:
Category :
Languages : en
Pages : 302
Get Book Here
Book Description
Author: Gregory T. Booth
Publisher:
ISBN:
Category :
Languages : en
Pages : 404
Get Book Here
Book Description
Promoter-proximal pausing of RNA Polymerase II (Pol II) is now recognized as a ubiquitous mechanism for regulating gene expression in metazoans. By capturing engaged Pol II shortly after transcription initiation, genes are primed for activation of RNA synthesis, enabling cells to rapidly alter global transcription programs. However, despite conservation of many factors involved in establishing this regulatory platform, many eukaryotes do not control gene expression through this process. Here, the examination of the global transcriptional landscape in two distantly related yeast revealed unprecedented divergence in Pol II distributions across genes. Previously undescribed pause-like profiles were identified within promoter-proximal regions of the fission yeast, Schizosaccharomyces pombe, that are sensitive to loss of the conserved elongation factor, Spt4. Thus, fission yeast might employ a variant of the system of regulation found in higher eukaryotes In flies and mammals, Pol II arrested within the promoter proximal region of a gene can only be released through the activity of a positive-transcription elongation factor (P-TEFb), composed of kinase (Cdk9) and cyclin (CycT1/2) subunits. Investigating the functional impact of Cdk9 on transcription in fission yeast revealed that, unlike most metazoan systems, Pol II in S. pombe is capable of overcoming the early elongation barrier after kinase inhibition, although not without consequence. However, fission yeast lack the metazoan-specific negative elongation factor complex (NELF) involved in pausing, perhaps limiting their ability to control the release of Pol II through phosphorylation of the elongation complex. Ultimately, by depleting pausing factors from cell lines derived from Drosophila melanogaster, it was tested whether NELF is required for P-TEFb-regulated pause escape. While global transcription is largely unaffected by the loss of NELF, upon inhibition of Cdk9, a significant amount of Pol II is aberrantly released from the pause, suggesting reduced control of this regulation. These findings suggest that NELF may have evolutionarily refined an ancestral promoter-proximal architecture of the transcription elongation complex, giving rise to a novel mechanism for gene regulation.
Author: Torben Heick Jensen
Publisher: Springer Science & Business Media
ISBN: 1441978410
Category : Medical
Languages : en
Pages : 161
Get Book Here
Book Description
The diversity of RNAs inside living cells is amazing. We have known of the more “classic” RNA species: mRNA, tRNA, rRNA, snRNA and snoRNA for some time now, but in a steady stream new types of molecules are being described as it is becoming clear that most of the genomic information of cells ends up in RNA. To deal with the enormous load of resulting RNA processing and degradation reactions, cells need adequate and efficient molecular machines. The RNA exosome is arising as a major facilitator to this effect. Structural and functional data gathered over the last decade have illustrated the biochemical importance of this multimeric complex and its many co-factors, revealing its enormous regulatory power. By gathering some of the most prominent researchers in the exosome field, it is the aim of this volume to introduce this fascinating protein complex as well as to give a timely and rich account of its many functions. The exosome was discovered more than a decade ago by Phil Mitchell and David Tollervey by its ability to trim the 3’end of yeast, S. cerevisiae, 5. 8S rRNA. In a historic account they laid out the events surrounding this identification and the subsequent birth of the research field. In the chapter by Kurt Januszyk and Christopher Lima the structural organization of eukaryotic exosomes and their evolutionary counterparts in bacteria and archaea are discussed in large part through presentation of structures.
Author: Giuliana Napolitano
Publisher:
ISBN:
Category :
Languages : en
Pages : 66
Get Book Here
Book Description
Author: Renato Paro
Publisher: Springer Nature
ISBN: 3030686701
Category : Science
Languages : en
Pages : 215
Get Book Here
Book Description
This open access textbook leads the reader from basic concepts of chromatin structure and function and RNA mechanisms to the understanding of epigenetics, imprinting, regeneration and reprogramming. The textbook treats epigenetic phenomena in animals, as well as plants. Written by four internationally known experts and senior lecturers in this field, it provides a valuable tool for Master- and PhD- students who need to comprehend the principles of epigenetics, or wish to gain a deeper knowledge in this field. After reading this book, the student will: Have an understanding of the basic toolbox of epigenetic regulation Know how genetic and epigenetic information layers are interconnected Be able to explain complex epigenetic phenomena by understanding the structures and principles of the underlying molecular mechanisms Understand how misregulated epigenetic mechanisms can lead to disease
Author: Junmin Peng
Publisher:
ISBN:
Category : Cyclin-dependent kinases
Languages : en
Pages : 246
Get Book Here
Book Description
Author: Guido Silvestri
Publisher: Springer
ISBN: 303002816X
Category : Medical
Languages : en
Pages : 253
Get Book Here
Book Description
This volume summarizes recent advances in understanding the mechanisms of HIV-1 latency, in characterizing residual viral reservoirs, and in developing targeted interventions to reduce HIV-1 persistence during antiretroviral therapy. Specific chapters address the molecular mechanisms that govern and regulate HIV-1 transcription and latency; assays and technical approaches to quantify viral reservoirs in humans and animal models; the complex interchange between viral reservoirs and the host immune system; computational strategies to model viral reservoir dynamics; and the development of therapeutic approaches that target viral reservoir cells. With contributions from an interdisciplinary group of investigators that cover a broad spectrum of subjects, from molecular virology to proof-of-principle clinical trials, this book is a valuable resource for basic scientists, translational investigators, infectious-disease physicians, individuals living with HIV/AIDS and the general public.
Author: Steven Gray
Publisher: Academic Press
ISBN: 0128002247
Category : Medical
Languages : en
Pages : 748
Get Book Here
Book Description
Epigenetic Cancer Therapy unites issues central to a translational audience actively seeking to understand the topic. It is ideal for cancer specialists, including oncologists and clinicians, but also provides valuable information for researchers, academics, students, governments, and decision-makers in the healthcare sector. The text covers the basic background of the epigenome, aberrant epigenetics, and its potential as a target for cancer therapy, and includes individual chapters on the state of epigenome knowledge in specific cancers (including lung, breast, prostate, liver). The book encompasses both large-scale intergovernmental initiatives as well as recent findings across cancer stem cells, rational drug design, clinical trials, and chemopreventative strategies. As a whole, the work articulates and raises the profile of epigenetics as a therapeutic option in the future management of cancer. - Concisely summarizes the therapeutic implications of recent, large-scale epigenome studies, including the cancer epigenome atlas - Discusses targeted isoform specific versus pan-specific inhibitors, a rational drug design approach to epigenetics relevant to pharmacoepigenetic clinical applications - Covers new findings in the interplay between cancer stem cells (CSCs) and drug resistance, demonstrating that epigenetic machinery is a candidate target for the eradication of these CSCs
Author: Philippe Collas
Publisher: Methods in Molecular Biology
ISBN:
Category : Computers
Languages : en
Pages : 290
Get Book Here
Book Description
In this book, researchers deeply involved in the development and improvement of chromatin immunoprecipitation assays (ChIP) provide cutting-edge protocols devoted to the most recent progress in ChIP and related subjects.
Author: Angelo Albini
Publisher: Royal Society of Chemistry
ISBN: 1782626956
Category : Science
Languages : en
Pages : 398
Get Book Here
Book Description
Providing critical reviews of recent advances in photochemistry including organic and computational aspects, the latest volume in the Series reflects the current interests in this area. It also includes a series of highlights on molecular devices, global artificial photosynthesis, silicon nanoparticles, solar energy conversion, organic heterogeneous photocatalysis and photochemistry in surface-water environments. Volume 44 of the annual Specialist Periodical Reports: Photochemistry is essential reading for anyone wishing to keep up with the literature on photochemistry and its applications.
