Centromere

Centromere PDF

Author: Durdica Ugarkovic

Publisher: Springer Science & Business Media

Published: 2009-06-12

Total Pages: 191

ISBN-13: 3642001823

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The centromere is a chromosomal region that enables the accurate segregation of chromosomes during mitosis and meiosis. It holds sister chromatids together, and through its centromere DNA–protein complex known as the kinetochore binds spindle microtubules to bring about accurate chromosome movements. Despite this conserved function, centromeres exhibit dramatic difference in structure, size, and complexity. Extensive studies on centromeric DNA revealed its rapid evolution resulting often in significant difference even among closely related species. Such a plasticity of centromeric DNA could be explained by epigenetic c- trol of centromere function, which does not depend absolutely on primary DNA sequence. According to epigenetic centromere concept, which is thoroughly d- cussed by Tanya Panchenko and Ben Black in Chap. 1 of this book, centromere activation or inactivation might be caused by modifications of chromatin. Such acquired chromatin epigenetic modifications are then inherited from one cell di- sion to the next. Concerning centromere-specific chromatin modification, it is now evident that all centromeres contain a centromere specific histone H3 variant, CenH3, which replaces histone H3 in centromeric nucleosomes and provides a structural basis that epigenetically defines centromere and differentiates it from the surrounding chromatin. Recent insights into the CenH3 presented in this chapter add important mechanistic understanding of how centromere identity is initially established and subsequently maintained in every cell cycle.

The Centromere

The Centromere PDF

Author: K. H. Andy Choo

Publisher: Oxford University Press, USA

Published: 1997

Total Pages: 328

ISBN-13:

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The centromere is an essential structure on all eukaryotic chromosomes that allows the equipartition of chromosomes during mitotic and meiotic cell divisions. Since its cytogenetic recognition as a constructed part of a chromosome many decades ago, great advances have been made in ourunderstanding of this intriguing structure, especially at the molecular level. This book brings together all available information on the centromere. It covers in details the DNA and protein components of this structure, and their individual functions, in species as diverse as budding and fissionyeasts, nematodes, Drosophila, mice, and humans; newly discovered roles of the centromere in marshalling "passenger" proteins; important emerging concepts such as latent centromeres and epigenetic factors; cytogenetic problems associated with centromere abnormalities; and practical application ofcentromere studies, such as in the construction of human artificial chromosomes for gene therapy. Supported by ample illustrations, the book is written with sufficient simplicity and detail to suit both specialist and non-specialist scholars. It is the first book on the subject

Centromeres and Kinetochores

Centromeres and Kinetochores PDF

Author: Ben E. Black

Publisher: Springer

Published: 2017-08-23

Total Pages: 554

ISBN-13: 3319585924

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This book presents the latest advances concerning the regulation of chromosome segregation during cell division by means of centromeres and kinetochores. The authors cover both state-of-the-art techniques and a range of species and model systems, shedding new light on the molecular mechanisms controlling the transmission of genetic material between cell divisions and from parent to offspring. The chapters cover five major areas related to the current study of centromeres and kinetochores: 1) their genetic and epigenetic features, 2) key breakthroughs at the molecular, proteomic, imaging and biochemical level, 3) the constitutive centromere proteins, 4) the role of centromere proteins in the physical process of chromosome segregation and its careful orchestration through elaborate regulation, and 5) intersections with reproductive biology, human health and disease, as well as chromosome evolution. The book offers an informative and provocative guide for newcomers as well as those already acquainted with the field.

Chromatin Regulation and Dynamics

Chromatin Regulation and Dynamics PDF

Author: Anita Göndör

Publisher: Academic Press

Published: 2016-10-25

Total Pages: 496

ISBN-13: 0128034025

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Chromatin Regulation and Dynamics integrates knowledge on the dynamic regulation of primary chromatin fiber with the 3D nuclear architecture, then connects related processes to circadian regulation of cellular metabolic states, representing a paradigm of adaptation to environmental changes. The final chapters discuss the many ways chromatin dynamics can synergize to fundamentally contribute to the development of complex diseases. Chromatin dynamics, which is strategically positioned at the gene-environment interface, is at the core of disease development. As such, Chromatin Regulation and Dynamics, part of the Translational Epigenetics series, facilitates the flow of information between research areas such as chromatin regulation, developmental biology, and epidemiology by focusing on recent findings of the fast-moving field of chromatin regulation. Presents and discusses novel principles of chromatin regulation and dynamics with a cross-disciplinary perspective Promotes crosstalk between basic sciences and their applications in medicine Provides a framework for future studies on complex diseases by integrating various aspects of chromatin biology with cellular metabolic states, with an emphasis on the dynamic nature of chromatin and stochastic principles Integrates knowledge on the dynamic regulation of primary chromatin fiber with 3D nuclear architecture, then connects related processes to circadian regulation of cellular metabolic states, representing a paradigm of adaptation to environmental changes

Plant Centromere Biology

Plant Centromere Biology PDF

Author: Jiming Jiang

Publisher: John Wiley & Sons

Published: 2013-01-23

Total Pages: 363

ISBN-13: 1118525558

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Plant Centromere Biology is dedicated to plant centromere research. Chapters cover the structure of centromeres from several plant species including Arabidopsis thaliana, rice, maize, wheat and beet, while other sections cover several unique characteristics associated with plant centromeres, including classical and modern neocentromeres, centromere drive and centromere misdivision. Additional chapters are dedicated to epigenetic modification and evolution of plant centromeres, and development and application of plant artificial chromosomes. Written by an international group of experts in the field, Plant Centromere Biology is a valuable handbook for all plant scientists working on plant genome research. Beyond the bench, it can also serve as a helpful reference tool or textbook for upper level college classes on cytogenetics or genome analysis.

Cellular Organelles

Cellular Organelles PDF

Author: Edward Bittar

Publisher: Elsevier

Published: 1995-12-08

Total Pages: 287

ISBN-13: 9780080528793

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The purpose of this volume is to provide a synopsis of present knowledge of the structure, organisation, and function of cellular organelles with an emphasis on the examination of important but unsolved problems, and the directions in which molecular and cell biology are moving. Though designed primarily to meet the needs of the first-year medical student, particularly in schools where the traditional curriculum has been partly or wholly replaced by a multi-disciplinary core curriculum, the mass of information made available here should prove useful to students of biochemistry, physiology, biology, bioengineering, dentistry, and nursing. It is not yet possible to give a complete account of the relations between the organelles of two compartments and of the mechanisms by which some degree of order is maintained in the cell as a whole. However, a new breed of scientists, known as molecular cell biologists, have already contributed in some measure to our understanding of several biological phenomena notably interorganelle communication. Take, for example, intracellular membrane transport: it can now be expressed in terms of the sorting, targeting, and transport of protein from the endoplasmic reticulum to another compartment. This volume contains the first ten chapters on the subject of organelles. The remaining four are in Volume 3, to which sections on organelle disorders and the extracellular matrix have been added.

Centrosome and Centriole

Centrosome and Centriole PDF

Author:

Publisher: Academic Press

Published: 2015-09-10

Total Pages: 434

ISBN-13: 0128026383

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This new volume of Methods in Cell Biology looks at methods for analyzing centrosomes and centrioles. Chapters cover such topics as methods to analyze centrosomes, centriole biogenesis and function in multi-ciliated cells, laser manipulation of centrosomes or CLEM, analysis of centrosomes in human cancers and tissues, proximity interaction techniques to study centrosomes, and genome engineering for creating conditional alleles in human cells. Covers sections on model systems and functional studies, imaging-based approaches and emerging studies Chapters are written by experts in the field Cutting-edge material

Human Chromosomes

Human Chromosomes PDF

Author: Orlando J. Miller

Publisher: Springer Science & Business Media

Published: 2011-06-28

Total Pages: 508

ISBN-13: 1461301394

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The fourth edition of this well-known text provides students, researchers and technicians in the area of medicine, genetics and cell biology with a concise, understandable introduction to the structure and behavior of human chromosomes. This new edition continues to cover both basic and up-to-date material on normal and defective chromosomes, yet is particularly strengthened by the complete revision of the material on the molecular genetics of chromosomes and chromosomal defects. The mapping and molecular analysis of chromosomes is one of the most exciting and active areas of modern biomedical research, and this book will be invaluable to scientists, students, technicians and physicians with an interest in the function and dysfunction of chromosomes.