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. 2021 Mar 19;26(6):1733. doi: 10.3390/molecules26061733

Figure 3.

Figure 3

Multiple sequence alignment of BsAbfA with α-l-arabinofuranosidases from several microorganisms: CAA61937 (BsAbfA) from B. subtilis, ADM26764 from R. ginsenosidimutans Gsoil 3054, ABP67153 from T. thermarum DSM5069, and AEH51197 from Pseudothermotoga thermarum DSM 5069. The three motifs with conserved RYPGG (residues 67–73), WCLGNEMDGPWQ (residues 168–179), and DEWNVW (residues 291–296) are highlighted in a box. The residues E173 and E292 (Red bold italic letters) are regarded as typical and necessary acid-base and nucleophilic catalytic residues for the hydrolysis of the glycosidic bond.