从基因组学到蛋白质组学

介绍了蛋白质的概念,产生背景,发展过程;比较了蛋白质组学与基因组学研究之间的差异;对结构蛋白质组学和功能蛋白质组学研究的内容以及相应的主要研究手段与技术加以简单评述,阐述了蛋白质组学研究的理论意义,应用前景及对国计民生的影响。     

Food vs Fuel

Cover illustration: This special issue of BTJ, edited by Dr. Stefan Nordhoff (Marl, Germany), highlights the potential but also the drawbacks of biotechnology in energy production. What are the economics behind sustainable energy production? How can we face the competition for the use of biomaterials for food or for mobility? What are new developments in the field? How much agricultural land can be converted and where should water for irrigation come from? What are alternative solutions to the world's energy problem? Cover images © Corbis Digital Stock and Brand X Pictures.     

Cryoprotection--permeant vs nonpermeant additives

Chinese hamster ovary cells (CHO) were preserved at low temperatures with permeating and nonpermeating solutes. By making use of the temperature dependence of the diffusion of glycerol into cells it was possible to use this compared as either one or the other of these 2 classes of cryoprotectant. It was found that cell recovery could be obtained after cooling to, and storage at subzero temperatures ranging from ?30 to ?196 °C, but whereas both types of cryoprotectant provided some protection at the lowest temperature, only permeant compounds were useful at the higher temperatures.