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The 9th Jerusalem Symposium was dedicated to the memory of Professor Ernst David Bergmann. An imposing and deeply moving memorial session, chaired by Professor Ephraim Katzir, the President of the State of IsƯ rael and a close friend of Professor Bergmann preceded the Symposium itself. During this session, Professor Bergmann's personality, scienƯ tific achievements and contributions to the development of his country were described and praised, besides President Katzir, by Professor A. Dvoretzky, President of the Israel Academy of Sciences and Humanities, Professor D. Ginsburg, Dean of the Israel Institute of Technology in Haifa and the author of these lines. May I just quote short extracts from these speeches. President Katzir: "As we open this ninth in the series of symposia initiated in 1967, it is difficult for me as, I am sure, for many of Ernst Bergmann's friends, co-workers and students, to be here without him. He was not only a great scientist and a beloved teacher, he was one of the most important founders of science in this country. To him we owe many institutes and the establishment here of many branches of science." Professor Dvoretzky: "Ernst Bergmann's greatness did not stem from one component overshadowing all the others. It was a multifaceted greatƯ ness consisting of the harmonious co~lescing of seemingly contrasting entities into a wonderful unity "
Chemists have been aware of the existence of coordination compounds con taining organic macrocyclic ligands since the first part of this century ; however, only during the past few years have they expanded research into the chemistry of these compounds. The expansion was initiated in the early 1960s by the synthesis and characterization of compounds containing some new macrocyclic ligands. The synthesis of compounds which may serve as model systems for some natural products containing large rings as ligands provided the main goal for the early expansion of research effort; indeed, a recurrent theme behind much of the reported chemistry has been the analogy between synthetic macrocyclic compounds and many natural-product systems. More recently, the emphases of reported research have ranged over the whole spectrum of chemistry, and the number of publications that discuss macrocyclic chemistry has increased at a dramatic rate. The completed research has been reported in a variety of journals throughout the world but there has been no previous attempt to bring the major developments together under one cover. This book, therefore, attempts to satisfy the need for a single source in which there is both a collection and a correlation of information concerning the coordination chemistry of macrocyclic compounds. The chapters in this book discuss various aspects of macrocyclic chemistry, and while these chapters as a whole constitute an in-depth survey of the state-of the-art of the field, each chapter is written as a complete unit.
The scientific and practical interest in coronands (crown ethers), cryptands, podands as complexing agents for cations as well as for anions and neutral low molecular species is undeniable 1,2). The chemistry of crown compounds is steadily increasing. About 250 original papers dealing with crown chemistry appeared only in 1980. New molecules· with crown ether properties are constantly synthesized and new applications discov,?red. Owing to lack of space, only a small number of the original publications is men tioned here. Thus, in the literature compilation only some, but relevant works are selected for each chapter. Whenever possible, reference is made to reviews or review-like articles alone by means of which origin,al works can be consulted. The reviews given under ref. 1) are considered to be the most relevant. The formulae presented in the figures should be understood as representative structures outlining a specific field. 2 Classification of Oligo-/Multidentate Neutral Ligands and of their Complexes Today, a distinction is made between the classical ring oligoethers (crown ethers) and monocyclic coronands, oligocyclic spherical cryptands and the acyclic podands with respect to topological aspects 3). This classification and the topology are illustrated in Fig. 1, each figure representing the minimum number of donor atoms and chain segments characteristic of each class of compounds. Multidentate mono cyclic ligands with any type of donor atoms are called coronands ("crown compounds"), while the term crown ether should be reserved for cyclic oligoethers exclusively containing oxygen as donor atom.
Cation Flux Across Biomembranes documents the proceedings of a symposium on ""Cation Flux across Biomembranes"" sponsored by the Japan Bioenergetics Group, held September 10-13, 1978 at the Inter-University Seminar House of Kansai in Kobe, Japan. The symposium brought together 80 of the leading investigators concerned with ATP-utilizing and ATP-generating systems associated with cation fluxes across membranes to discuss biochemical mechanisms in depth and their relation to cation transport functions. The papers presented focused on three types of membrane systems. The first two membrane systems are classified as ATP-utilizing systems. These include the plasma membrane, associated with the ATP dependent Na+-K+ transport system, which draws upon most of the cell's energy for cation fluxes; and the sarcoplasmic recticulum membrane associated with Ca++ transport, which plays a key role in excitation-contraction coupling in muscle. The third type of membrane system falls under ATP-generating systems. These include the inner membranes of mitochondria, chloroplasts, and bacteria associated with H+ fluxes generated by oxidation-reduction reactions, and their coupling to secondary ion flows and oxidative and photosynthetic phosphorylation. H+ transport associated with the photoreaction cycle of bacteriorhodopsin, the light energy converted in halobacteria was also considered.
Proceedings of the NATO Advanced Study Institute, Tabiano, Parma, Italy, May 21-June 1, 1979
Gaseous Air Pollutants and Plant Metabolism mainly talks about plants and air pollution. The publication of this book is inspired by a symposium on plants and pollution, which generated great interest among the personnel related to the field. The book begins with a brief background on air pollution and continues with a discussion on different types, effects, and solutions to the pollution. The book also features studies about the gaseous air pollution in North America, China, and Japan. The chapters that follow explore the different effects of pollution on chloroplasts, respiration, biochemistry, plant, and plant cells. The text is a valuable reference to undergraduates or postgraduates of chemistry and its related studies.
Advances in Carbohydrate Chemistry and Biochemistry
Volume 32 covers metal ion bonding to phosphate, sugar and nucleobase residues; the ambidentate as well as the stacking properties of nucleotides; kinetic aspects as well as properties of nucleobase and nucleotide analogs; and the oligonucleotides and nucleic acids. It examines electron transfer reactions over a large number of base repairs in DNA, the role of metal ions in ribozymes, ternary metal-nucleic acid base-protein complexes, metal responsive gene regulation, and the structure-activity relationships of anticancer drugs and their action on DNA, including cisplatin and the role of proteins.
The results of a NATO Advanced Study Institute (ASI) entitled "Coordination Chemistry Environments in Iron-Containing Proteins and Enzymes - Including Smaller Molecules and Model Systems" are summarized in this book. The ASI was held in the Province of Alberta, Canada, from August 23 to September 4, 1981. The first half of the conference was held on the campus of the University of Alberta, Edmonton, and the second half at the Overlander Lodge, Hinton. Two other conferences had the greatest impact upon the planning for this ASI. One was a NATO ASI held in Tomar, Portugal in September of 1979, entitled "Metal Ions in Biology". Among the organizers for that conference were Allen Hill and Antonio Xavier; we are happy to acknowledge their beneficial influence on our subsequent conference. The other most influential conference was one organized by Ralph Wilkins and Dennis Darnell entitled "Methods for Determining Metal Ion Environments in Proteins" which was held in Las Cruces, New Mexico, U.S.A., January 10-12, 1979. The Las Cruces conference invited lectures were published as Volume 2 of "Advances in Inorganic Biochemistry", G. Eichhorn and L. Marzilli, editors.
Biochemical and Clinical Aspects of Oxygen contains the proceedings of a symposium held on the Pingree Park Campus of Colorado State University on September 24-29, 1978. Contributors discuss the biochemical and clinical aspects of oxygen, focusing on reactions and areas relating to heme, flavin, copper and nonheme iron proteins, organ transplants, carbon monoxide formation and detoxification, oxidant drugs and pollutants, oxygen toxicity, enzyme inactivation, lipid peroxidation, membrane destruction, antioxidants, cataractogenesis, mutagen and carcinogen formation, malaria and trypanosome parasites, and inflammation. This volume is organized into 51 chapters and begins with a discussion of bonding and reactions of dioxygen bound to hemeproteins, along with the pathophysiology of hemolysis due to unstable hemoglobins. The focus then turns to the reactivity and function of leghemoglobin, reduction of oxygen and five redox forms of horseradish peroxidase, and acid-base catalysis and hydrogen bonding in reactions mediated by peroxidases. The reader is methodically introduced to the ligands of cytochrome P-450 and their role in the activation of dioxygen, oxygen and catabolite regulation of hemoprotein biosynthesis in yeast, and factors controlling hemoprotein reactivity. A chapter describing the spectroscopic mapping of oxygen supply and demand in the heart concludes the book. This book will be of interest to biochemists, biophysicists, physicians, toxicologists, immunologists, physiologists, parasitologists, radiologists, and environmentalists.