Alignment of putative CatD (A), Fn3D (B) ChBD3 (C) of Paenibacillus sp. Y412MC10 with different characterized bacterial chitinases. Black box indicates the conserved residues in GH 18 catalytic domain. Blue box indicates the conserved residues in Fn3 domain. Red box indicates the conserved aromatic residues W= Tryptophan and Y= Tyrosine, whereas, X may be any amino acid.