Formation and Fate of Cell Organelles presents the proceedings of the symposia of the International Society for Cell Biology. Contributors offer their views on various aspects of the problem of spontaneous assembly, particularly how cellular structures arise from the component molecules. They consider whether all cellular organelles and cells, themselves, can arise by spontaneous assembly, or whether some regulation is involved and the mechanisms underlying such regulation. This book is organized into 16 chapters and begins with an overview of self-assembling systems of equal units and how they can be built efficiently, focusing on quasi-equivalence and helical waves on bacterial flagella. This text also discusses the differences in free energy of the molecules in their various states and the use of the free energy of a particular array of molecules to predict what arrays will form. The reader is introduced to intermolecular forces and how macromolecular lipid structures assemble in vitro, along with developments in the resolution of the spindle fibers of the mitotic apparatus. The book also looks into the mechanisms underlying the disposition of microtubules in plant cells during interphase and mitosis, and then concludes with a chapter on some studies dealing with cytoplasmic genes and cytoplasmic inheritance. This book is a valuable source of information for scientists and researchers engaged in fields ranging from cytology and biology to chemistry, pathology, and biophysics.

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.

The Biogenesis of Cellular Organelles represents a comprehensive summary of recent advances in the study of the biogenesis and functional dynamics of the major organelles operating in the eukaryotic cell. This book begins by placing the study of organelle biogenesis in a historical perspective by describing past scientific strategies, theories, and findings and relating these foundations to current investigations. Reviews of protein and lipid mediators important for organelle biogenesis are then presented, and are followed by summaries focused on the endoplasmic reticulum, Golgi, lysosome, nucleus, mitochondria, and peroxisome.

The compartmentation of genetic information is a fundamental feature of the eukaryotic cell. The metabolic capacity of a eukaryotic (plant) cell and the steps leading to it are overwhelmingly an endeavour of a joint genetic cooperation between nucleus/cytosol, plastids, and mitochondria. Alter ation of the genetic material in anyone of these compartments or exchange of organelles between species can seriously affect harmoniously balanced growth of an organism. Although the biological significance of this genetic design has been vividly evident since the discovery of non-Mendelian inheritance by Baur and Correns at the beginning of this century, and became indisputable in principle after Renner's work on interspecific nuclear/plastid hybrids (summarized in his classical article in 1934), studies on the genetics of organelles have long suffered from the lack of respectabil ity. Non-Mendelian inheritance was considered a research sideline~ifnot a freak~by most geneticists, which becomes evident when one consults common textbooks. For instance, these have usually impeccable accounts of photosynthetic and respiratory energy conversion in chloroplasts and mitochondria, of metabolism and global circulation of the biological key elements C, N, and S, as well as of the organization, maintenance, and function of nuclear genetic information. In contrast, the heredity and molecular biology of organelles are generally treated as an adjunct, and neither goes as far as to describe the impact of the integrated genetic system.

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