Secreted alpha-L-arabinofuranosidase that actively hydrolyzes p-NP-alpha-L-arabinofuranoside and is specific for furanose configuration of the carbohydrate ring. Exhibits also significant activity against polymeric arabinose-containing substrates such as arabinan and arabinoxylan, a major component of plant hemicellulose. Hydrolysis of terminal non-reducing alpha-L-arabinofuranoside residues in alpha-L-arabinosides. Optimum pH is 4.7. Optimum temperature is 70 degrees Celsius. 50 perscent maximal activity is exhibited at 75 degrees Celsius. Reaction time was 10 min. Glycan metabolism; L-arabinan degradation. Organized into two domains: an N-terminal catalytic domain and a C-terminal arabinose-binding domain (ABD). Residue Asn-280 is mannosylated with up to 7 mannose residues. Belongs to the glycosyl hydrolase 54 family.