Completely revised new edition of the definitive reference on disorders of hemoglobin.

A signature feature of living organisms is their ability to carry out purposeful actions by taking stock of the world around them. To that end, cells have an arsenal of signaling molecules linked together in signaling pathways, which switch between inactive and active conformations. The Molecular Switch articulates a biophysical perspective on signaling, showing how allostery—a powerful explanation of how molecules function across all biological domains—can be reformulated using equilibrium statistical mechanics, applied to diverse biological systems exhibiting switching behaviors, and successfully unify seemingly unrelated phenomena. Rob Phillips weaves together allostery and statistical mechanics via a series of biological vignettes, each of which showcases an important biological question and accompanying physical analysis. Beginning with the study of ligand-gated ion channels and their role in problems ranging from muscle action to vision, Phillips then undertakes increasingly sophisticated case studies, from bacterial chemotaxis and quorum sensing to hemoglobin and its role in mammalian physiology. He looks at G-protein coupled receptors as well as the role of allosteric molecules in gene regulation. Phillips concludes by surveying problems in biological fidelity and offering a speculative chapter on the relationship between allostery and biological Maxwell demons. Appropriate for graduate students and researchers in biophysics, physics, engineering, biology, and neuroscience, The Molecular Switch presents a unified, quantitative model for describing biological signaling phenomena.

The Human Genome Project has spawned a Renaissance of research faced with the daunting expectation of personalized medicine for individuals with sickle cell disease in the Genome Era. This book offers a comprehensive and timeless account of emerging concepts in clinical and basic science research, and community concerns of health disparity to educate professionals, students and the general public about meeting this challenging expectation. Contributions from physicians, research scientists, scientific administrators and community workers make Renaissance of Sickle Cell Disease Research in the Genome Era unique among the catalogue of books on this genetic disorder.Part 1 offers detailed review of the National Heart Lung and Blood Institute's leadership role in funding sickle cell research, as well as developing progressive research initiatives and the predicted impact of the Human Genome Project. Part 2 gives an account of several clinical research perspectives based on the Cooperative Study of Sickle Cell Disease. These include recommendations for newborn screening, pain management, stroke, transfusion therapy and pediatric and adult healthcare. Part 3 offers novel insights into basic science research progress and the impact of the Human Genome Project on the direction of hemoglobinopathy research, including hemoglobin switching, bone marrow transplantation and gene therapy. Part 4 engages the reader in a culture-based discussion of the stigma attached to sickle cell disease in the African American community and the apprehensions about genetic research in this community. It concludes with a global perspective on sickle cell disease from African, European and American experiences. For readers seeking a definitive account of sickle cell disease appropriate for students, researchers and community workers, this collaborative effort is an ideal textbook./a

Molecular biology has provided a tool with which problems in cellular differentiation can be answered. Recombinant DNA technology has been used to obtain quantities of the erythropoietic hormone, erythropoietin. The availability of the hormone has provided a much-needed impetus in learning how erythropoiesis is controlled. Knowledge of the genetic components, transcription and translation of the erythropoietin gene and finally the release of the mature hormone under various physiological conditions should be forthcoming in the near future. This volume will give the reader some indication as to the different aspects of erythropoiesis. They include the regulation of production of the hormone under normal and abnormal conditions, ontogeny and cellular interactions and the assay of the hormone itself.