##gff-version 3 Q5QZY8 UniProtKB Signal peptide 1 24 . . . Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:SignalP Q5QZY8 UniProtKB Chain 25 461 . . . ID=PRO_5004261801;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:SignalP Q5QZY8 UniProtKB Domain 356 456 . . . Note=Alpha-L-arabinofuranosidase B arabinose-binding;Ontology_term=ECO:0000259;evidence=ECO:0000259|Pfam:PF05270 Q5QZY8 UniProtKB Active site 53 53 . . . Note=Proton acceptor;Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR606710-1 Q5QZY8 UniProtKB Active site 220 220 . . . Note=Proton donor;Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR606710-1 Q5QZY8 UniProtKB Site 170 170 . . . Note=Important for catalytic activity%2C responsible for pKa modulation of the active site Glu and correct orientation of both the proton donor and substrate;Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR606710-2