On January 11th Johan van Heerden defended his PhD entitled: “Dynamic regulation of yeast glycolysis through trehalose cycling:  a probabilistic view of metabolic transitions”, of which Bas was the promoter. The committee comprised of prof Stefan Hohmann, prof Hans Westerhoff, prof Barbara Bakker, prof Frank Bruggeman and Dr Aljoscha Wahl. Previous group members, Jan Berkhout and Filipe Santos were the paranymphs.