Figure 4. Gene expression levels of dockerin-containing genes.

Number of up-regulated (green), down-regulated (red) or unaffected (blue) genes is marked for each group of dockerins. Expression data were determined for cultures grown on either cellulose [0.1% w/v pebble milled cellulose (filter paper)] or cellobiose (0.4% w/v) as a carbon and energy substrate, based on Berg Miller et al [24], where fold changes greater than or equal to 2-fold were considered up-regulated and fold changes less than or equal to 0.5-fold were considered down-regulated.