inexpensive nicotinamidecofactor biomimetics to replace the expensive NAD(P)/H cofactors is an ongoing research activity. Here we present mutational studies on a thermostable glucose dehydrogenase from Saccharolobus solfataricus (SsGDH) using a novel set of synthetic cofactors. Furthermore, we show the successful oxidation of a variety of different sugars in the context of cofactorregeneration. This combined