C. Neil Hunter is an authority on the biosynthesis of bacteriochlorophylls, chlorophylls and carotenoids and on the assembly and organization of bacterial photosynthetic membranes. Fevzi Daldal is an authority on the structure, function, regulation, proteomics and biogenesis of membrane cytochromes in Rhodobacter species. Marion C. Thurnauer is an authority on the analysis of reaction center photochemistry by electron paramagnetic resonance (EPR) spectroscopy. J. Thomas Beatty is an authority on many aspects of photosynthetic bacteria; their ecology and regulation of gene expression, as well as biochemical and functional analysis of photosynthetic complexes.