Biocatalysis and Biotransformation is an international journal covering the application, both actual and potential, of biological catalysts (including whole cells or isolated components thereof, natural and modified enzymes and catalytic antibodies) for the synthesis, interconversion or degradation of chemical species. In addition to papers describing the synthetic applications of biotransformations the journal particularly welcomes papers focusing on the mechanistic principles, kinetics and thermodynamics of biocatalytic processes, the chemical or genetic modification of biocatalysts and the activity and stability of biocatalysts in non-aqueous and multi- phasic environments, including the design of large scale biocatalytic processes. The scope of the journal also encompasses biomimetic systems and environmental applications of biocatalysis where the mechanistic principles are understood or novel biocatalytic activities are involved. Regular issues of the journal publish full length refereed research papers and invited review articles in topical areas. Short communications in areas such as the application of biotransformations in chemical synthesis or preliminary reports of novel catalytic activities are also welcomed.