a, growth of wild type Bt on Candida albicans mannan and glucose. b, growth of wild type Bt and the mutant lacking PUL-Man1 and PUL-Man3 (ΔPUL-Man1/3) on Schizosaccharomyces pombe α-mannan. c, growth of wild type Bt, and the Bt mutants lacking Pul-Man2 (ΔPUL-Man2), or all three mannan PULs (ΔPUL-Man1/2/3) on S.cerevisiae α-mannan. d, displays the growth profile of wild-type Bt and the Bt mutant lacking bt3774 (Δbt3774) on S. cerevisiae mannan. In panels a,
b,
c and d, each point on the growth curve represents the mean of three biological replicates. e, enzymes at 1 µM at 37 °C were incubated with either undecorated α-1,6-mannan (derived from mnn2 mutant of S. cerevisiae), lanes 1-3, or mannan from S. pombe, lanes 4-9. Lanes 1 and 4, the mannans incubated in the absence of the enzymes; lanes 2 and 6, mannans incubated with the periplasmic mannanase BT3782, and in lanes 3 and 7 the surface mannanase BT3792; lane 5, S. pombe mannan incubated with the GH97 α-galactosidase BT2620; lanes 8 and 9, S. pombe mannan incubated with BT2620/BT3782 and BT2620/BT3792, respectively. Lane 10 galactose standard; lane 11 α-1,6-mannooligosaccharides: mannose (M1), mannobiose (M2), mannotriose (M3) and mannotetraose (M4).