Enzymatic synthesis of acrylamide: a success story not yet over.

The application of enzymatic transformations is attracting increasing attention. Until recently, such an approach has generally been confined to producing fine chemicals difficult to obtain through conventional chemical methods. Microbial nitrile hydratase (NHase) has now been applied to the industrial, kiloton-scale production of the important chemical commodity acrylamide. Recent progress in understanding microbial nitrile metabolism at both the gene and protein levels is permitting improvement of the acrylamide production process.