John is interested in anything computational and related to molecules. Having been a theoretical chemistry graduate student, his first postdoc was in Biochemistry at UCL. He has been a lecturer and Birkbeck and at Cambridge, before coming to St ANdrews in 2009. Since then, he has done lots of chemoinformatics, quite a lot of bioinformatics and only a little real theoretical chemistry. His scientific interests include computing the binding affinities between proteins and ligands, side-effects and toxicities of pharmaceuticals, and how much of a compound will dissolve in water. His recent research has centred on the interface between chemistry and biology and has used computational techniques to address a diversity of problems in pharmaceutical chemistry and structural bioinformatics. His group have worked extensively on the prediction of molecular properties such as melting point and solubility from chemical structure, using both Informatics and Theoretical Chemistry methodologies. They also use computational methods to study enzyme reaction mechanisms. They have recently developed the MACiE database of enzyme reaction mechanisms in collaboration with Prof. Janet Thornton at the EMBL-EBI and have conducted a thorough survey of the chemical mechanisms used in enzyme catalysis.