The book contains in its first part reviews on modelling of enzyme properties in organic solvents, lipase-catalysed synthesis of carboxylic amides, chemoenzymatic synthesis of lipidated peptides and chemoenzymatic transformations in nucleoside chemistry. In the second part contributions on recent developments in biocatalysis are given: lipase and esterase catalysed resolutions, investigations on regio- and stereoselective biocatalytic acylations in steroid side-chains and of substrate- and stereospecificity of Penicillin G amidases, deracemisation for amino acid synthesis, biocatalytic hydrolysis of nitriles, enzymatic and microbial hydroxylation of dienes and alpha-methyl esters, enantioselective sulphoxidations by peroxidases.