Multiple sequence alignment of fungal β-
-acetylhexosaminidases. Cysteine residues are marked by green dots, amino acid residues in A. oryzae and P. oxalicum active sites are marked by red dots. Long loops close to the active site are labeled. The C-terminal end of the propeptide is marked, insertion/deletion regions in the rest of the protein are shown by black rectangles. ClustalW coloring scheme is used.