Today, as the large international genome sequence projects are gaining a great amount of public attention and huge sequence data bases are created it be comes more and more obvious that we are very limited in our ability to access functional data for the gene products - the proteins, in particular for enzymes. Those data are inherently very difficult to collect, interpret and standardize as they are highly distributed among journals from different fields and are often sub ject to experimental conditions. Nevertheless a systematic collection is essential for our interpretation of the genome...