The Editors of the Advances in Microbial Physiology series have always striven to provide a diverse range of top-quality papers on all aspects of microbial physiology. Coverage of 'holistic' topics or whole cell studies such as ion fluxes, stress responses and motility have gone hand-in-hand with detailed biochemical analyses of individual transport systems, electron transport pathways and many aspects of metabolism. Now edited by Professor Robert Poole, University of Sheffield, Advances in Microbial Physiology continues to publish topical and important reviews, interpreting physiology in its broadest context, to include all material that contributes to our understanding of how microorganisms and their component parts work. * The Biodiversity of Microbial Cytochromes P450* The Tat protein translocation pathway and its role in microbial physiology* Microbial Globins