title: A tribute to Isao Karube and Rolf D. Schmid.
authors.affiliation: University of Stuttgart, Institute for Technical Biochemistry, Allmandring 31, 70569 Stuttgart, Germany, rolf.d.schmid@rus.uni-stuttgart.de
authors.forename: Rolf D.
authors.initials: RD
authors.lastname: Schmid
authors.forename: Frieder W.
authors.initials: FW
authors.lastname: Scheller