... theenzyme from E. coli [9], NadB from B. subtilis is adimer of 115 kDa in the absence of NaCl and a mono-mer of 55 kDa in the presence of 150 mm NaCl. Afterincubation with pure NadA in ratios of ... horikoshii and Sulfol-obus tokadaii, and characterized from a biochemical and structural point of view only from E. coli and S. tokadaii [8–17]. It is a flavoprotein containing 1 mol of noncovalently ... Armando Negri2, Alessandra M. Albertini1 and Gabriella Tedeschi21 Department of Genetics and Microbiology, University of Pavia, Italy2 D.I.P.A.V., Section of Biochemistry, University of...