Although we have previously shown that the pellet of
hindgut homogenates of N. takasagoensis contains
cellulase activity (Tokuda et al. 2005), this activity was
not solubilized by suspending the pellet with water or
buffer. Thus, we used a detergent reagent, CelLytic B,
which is often used for solubilization of recombinant
proteins produced by bacteria without denaturing
(Ni et al. 2005; Strauss et al. 2005). Figure 1a shows
zymograms of crude and pellet extracts of the midgut
and the hindgut in N. takasagoensis and N. walkeri. In
both SDS- and native-PAGE, the midgut crude and
pellet extracts revealed one major band of cellulase