I am a biophysicist/biochemist with interests in molecular reaction mechanisms of enzyme catalysis with emphasis on biological energy conversion systems. I am an expert in infrared spectroscopy and its application to protein studies. My main research project is funded by the Medical Research Council U.K. It focuses on the understanding of the proton coupled electron transfer in respiratory cytochrome c oxidases and the way 'supernumerary' subunits or environmental factors influence catalysis.