Protein Kinase C Protocols


Book Description

Since the discovery that protein kinase C (PKC) transduces the ab- dance of signals that result in phospholipid hydrolysis, this enzyme has been at the forefront of research in signal transduction. Protein Kinase C Protocols covers fundamental methods for studying the structure, function, regulation, subcellular localization, and macromolecular interactions of PKC. Protein Kinase C Protocols is divided into 11 sections representing the major aspects of PKC regulation and function. Part I contains an introduction and a historical perspective on the discovery of PKC by Drs. Yasutomi Nishizuka and Ushio Kikkawa. Part II describes methods to purify PKC. Part III describes the standard methods for measuring PKC activity: its enzymatic activity and its stimulus-dependent translocation from the cytosol to the membrane. Part IV describes methods for measuring the membrane interaction of PKC in vivo and in vitro. Part V provides methodologies and techniques for measuring the ph- phorylation state of PKC, including a protocol for measuring the activity of PKC’s upstream kinase, PDK-1. Novel methods for identifying substrates are described in Part VI. Part VII presents protocols for expressing and analyzing the membrane targeting domains of PKC. Part VIII provides a comprehensive c- pilation of methods used to identify binding partners for PKC. Part IX describes pharmacological probes used to study PKC. The book ends with a presentation of genetic approaches to study PKC (Part X) and a discussion of approaches used to study PKC in disease (Part XI).




Protein Kinase C


Book Description

Protein Kinase C is a pivotal component of the mechanism that allows a cell to respond to its changing environment. In this book, the most significant advances in recent basic research on Protein Kinase C are explained by active researchers in the field. The first seven chapters provide a comprehensive account of the fundamental structural and biochemical properties of Protein Kinase C. The remaining chapters contain overviews of the function of Protein Kinase C, both in lower organisms and in mammalian cells, the latter with a focus on immune cells and nerve cells. This book is the only recent publication devoted entirely to Protein Kinase C and forms a major point of reference for those active in the field. In addition it will appeal to those with a general interest in biochemistry, cell biology, immunology and neurobiology.




Protein Targeting Protocols


Book Description

It is by no means a revelation that proteins are not uniformly distributed throughout the cell. As a result, the idea that protein molecules, because of the specificity with which they can engage in interactions with other proteins, may be aimed—via these interactions—at a restricted target, is a fundamental one in contemporary molecular life sciences. The target may be variously c- ceived as a specific molecule, a group of molecules, a structure, or a more generic type of intracellular environment. Because the concept of protein targeting is intuitive rather than expl- itly defined, it has been variously used by different groups of researchers in cell biology, biochemistry, and molecular biology. For those working in the field of intracellular signaling, an influential introduction to the topic was the seminal article by Hubbard & Cohen (TIBS [1993] 18, 172–177), which was based on the work of Cohen’s laboratory on protein phosphatases. Sub- quently, the ideas that they discussed have been further developed and extended by many workers to other key intermediaries in intracellular sign- ing, including protein kinases and a great variety of modulator and adaptor proteins.




Membrane Protein Protocols


Book Description

Knowledge of the three-dimensional structure of a protein is absolutely required for the complete understanding of its function. The spatial orientation of amino acids in the active site of an enzyme demonstrates how substrate specificity is defined, and assists the medicinal chemist in the design of s- cific, tight-binding inhibitors. The shape and contour of a protein surface hints at its interaction with other proteins and with its environment. Structural ana- sis of multiprotein complexes helps to define the role and interaction of each individual component, and can predict the consequences of protein mutation or conditions that promote dissociation and rearrangement of the complex. Determining the three-dimensional structure of a protein requires milligram quantities of pure material. Such quantities are required to refine crystallization conditions for X-ray analysis, or to overcome the sensitivity limitations of NMR spectroscopy. Historically, structural determination of proteins was limited to those expressed naturally in large amounts, or derived from a tissue or cell source inexpensive enough to warrant the use of large quantities of cells. H- ever, with the advent of the techniques of modern gene expression, many p- teins that are constitutively expressed in minute amounts can become accessible to large-scale purification and structural analysis.




Protein Phosphatase Protocols


Book Description

Protein Phosphatase Protocols presents a broad range of protocols for the study of protein phosphatases, all written by experts and innovators from phosphatase laboratories around the world. This volume is a compendium of resources for the study of protein phosphatases and their potential as drug targets. Experimental methodologies are taken from proteomics, bioinformatics, genomics, biochemistry, RNAi, and genetics.




Immunotoxin Methods and Protocols


Book Description

Immunotoxins represent a new class of human therapeutics that have widespread applications and a potential that has not yet been fully recognized since they were first conceived of by Paul Ehrlich in 1906. The majority of advances in the development and implementation of immunotoxins has occurred over the last 20 years. The reasons for this use of immunotoxins in basic science and clinical research are the powerful concurrent advances in genetic engineering and receptor physiology. Recombinant technology has allowed investigators to produce sufficient quantities of a homogeneous c- pound that allows clinical trials to be performed. The identification of specific receptors on malignant cell types has enabled scientists to generate immunotoxins that have had positive results in clinical trials. As more cellular targets are identified in coming years, additional trials will be conducted in different disease states affecting still larger patient populations. Modulation of the immune system to decrease the humoral response to immunotoxins may improve their overall efficacy. As increasingly more effective compounds are generated, it will be necessary to decrease the local and systemic toxicity - sociated with these agents, and methods for doing so are presently being - veloped. The work presented in Immunotoxin Methods and Protocols focuses on three specific areas of immunotoxin investigation that are being conducted by experts throughout the world. The first section describes the construction and development of a variety of immunotoxins.




MAP Kinase Signaling Protocols


Book Description

Mitogen-activated protein kinase (MAPK) signaling cascades are a group of protein kinases that play a central role in the intracellular transmission of extracellular signals. These cascades operate as major lines of communication within a complicated signaling network that regulates many cellular processes, including proliferation, differentiation, development, stress response, and apoptosis. More than 15,000 papers on MAPKs have been published over the past few years, with the number of publications increasing each year. More and more laboratories embark on the study of MAPK cascades in many d- tinct cellular systems and in particular their role in disease. Future challenges in the study of MAPK cascades remain in understa- ing the role of the various components and isoforms of the cascades in the multiple critical functions that they regulate in the whole organism, as well as the diseases caused by their malfunction. Data from gene-disrupted mice s- gest that inhibition of the MAPK cascades may have serious consequences on the development and growth of the animals. For example, targeted deletion of MEK1 is lethal, owing to developmental problems of placental vasculature and abnormal fibroblast migration. This lethality occurs in spite of the normal expression of MEK2, indicating that although the two MEK isoforms are apparently similar, they do have distinct functions, at least during embryog- esis. The ERK cascade was also shown to play a central role in brain function and in learning and memory.




PCR Protocols


Book Description

In this new edition, the editors have thoroughly updated and dramatically expanded the number of protocols to take advantage of the newest technologies used in all branches of research and clinical medicine today. These proven methods include real time PCR, SNP analysis, nested PCR, direct PCR, and long range PCR. Among the highlights are chapters on genome profiling by SAGE, differential display and chip technologies, the amplification of whole genome DNA by random degenerate oligonucleotide PCR, and the refinement of PCR methods for the analysis of fragmented DNA from fixed tissues. Each fully tested protocol is described in step-by-step detail by an established expert in the field and includes a background introduction outlining the principle behind the technique, equipment and reagent lists, tips on trouble shooting and avoiding known pitfalls, and, where needed, a discussion of the interpretation and use of results.




G Protein Signaling


Book Description

Alan V. Smrcka presents a collection of cutting-edge methods for investigating G protein signaling from a variety of perspectives ranging from in vitro biochemistry to whole animal studies. Among the readily reproducible techniques presented are those for the purification of G proteins and effectors enzymes, assays of these purified G proteins and effector enzymes, and for the study of G proteins interactions with effectors in intact cells. Additional methods are provided for assaying G protein coupled receptor structure, function, and localization, and for studying the physiological roles for endogenous G proteins.




Apoptosis Methods and Protocols


Book Description

The most fundamental question facing each and every cell within an org- ism is to survive or to die. Cell death is required for normal function; some estimates suggest that as many as one million cells undergo cell death every second in the adult human body. Almost all cells undergoing physiological, or programmed, cell death, independent of cell type, manifest a stereotypic p- tern of morphological changes termed apoptosis. Typically, apoptotic cells d- play shrinkage, membrane blebbing, chromatin condensation, and nuclear fragmentation. The integrity of the cell membrane is not lost during apoptosis and so avoids eliciting the inflammatory response that would have been caused by the spillage of the cell’s contents. This is quite in contrast to the loss of cell contents typical of necrosis. The caspases, the family of intracellular cysteine proteases associated with apoptosis, are responsible for the stereotypical m- phological changes. Caspases cleave various substrate proteins that act on DNA fragmentation, nuclear envelope integrity, the cytoskeleton, and cell volume regulation. Apoptotic cells are cleared in vivo by the process of phagocytosis, in which specific “phagocytes” move to the site of apoptosis, engulf the dying cells and digest them. Apoptosis has a central role in many physiological processes, for example, in the immune system. Autoreactive cells are deleted via apoptosis to prevent autoimmunity. At the end of an immune response, activated lymphocytes are removed to maintain homeostasis within the immune system.