A. Growth curves of Bt -ΔBT1760 compared to the complemented mutant (ΔBT1760::BT1760) in levan (top) or FOS (bottom panel).
B. TLC analysis of the products of levan digestion by the Bt GH32 enzymes, BT1760, BT1759, BT1765 and BT3082. Frc, fructose; L2, levanbiose; L3, levantriose; L4, levantetraose.
C. Degradation of levan by Bt cells grown in minimal medium plus fructose. Error bars show the SDs from three independent experiments.