Functional classification of the lignocellulose-degrading enzymes found in the secretomes, according to Uniprot and JGI searches. Groups of proteins released by I. lacteus grown on wheat straw (a-b) or in submerged cultures (c-d), and in SSF cultures P. chrysosporium (e-f) and P. ostreatus (g-h). The total number of protein matches from JGI and Uniprot databases (Additional file 1: Tables S2-S9) is shown in parenthesis. Basidiomycota databases were used for I. lacteus secretome searches. The results from P. chrysosporium and P. ostreatus were searched against their own databases. SSF= solid state fermentation on wheat straw; SmF= submerged cultures in CSS; GH= glycosil hydrolases.