Residues in bold are highly conserved and those in boxes with a black background are perfect matches. Aromatic residues that are candidates for carbohydrate binding are indicated by a filled arrow, and two pairs of cysteines forming disulfide bonds are indicated by filled and open circles, respectively. TrCBHI, cellobiohydrolase I (Cel7A) from Trichoderma reesei (accession no. P62694); PcCBHII, cellobiohydrolase II (Cel6A) from Phanerochaete chrysosporium (Q02321); PcBGL3A, glucan β-1,3-glucosidase (Bgl) from P. chrysosporium (Q8TGC6); PcCBHI, cellobiohydrolase I-2 (Cel7D) from P. chrysosporium (Q09431); TrCBHII, cellobiohydrolase II (Cel6A) from T. reesei (P07987); PcCBCytb562, carbohydrate-binding cytochrome b
562 from P. chrysosporium (Q66NB8); MtCDH, cellobiose dehydrogenase from Myceliophthora thermophila (O74240).