Figure 2: Analysis of gene expression and protein secreted by A. niger.

(a) Expression of genes cbhA (encoding cellobiohydrolase CbhA), cbhB (encoding cellobiohydrolase CbhB), and xynB (encoding xylanase XynB), as % of expression of actin encoding gene actA, in liquid cultures containing glucose or wheat straw as carbon source, represented as mean ± standard error, n = 3, (b) SDS-PAGE gel of proteins secreted by A. niger in these cultures.