##gff-version 3 Q65GB9 UniProtKB Signal peptide 1 27 . . . Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:SignalP Q65GB9 UniProtKB Chain 28 320 . . . ID=PRO_5039548670;Note=Endo-alpha-(1->5)-L-arabinanase;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:SignalP Q65GB9 UniProtKB Active site 42 42 . . . Note=Proton acceptor;Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR026534-1 Q65GB9 UniProtKB Active site 211 211 . . . Note=Proton donor;Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR026534-1 Q65GB9 UniProtKB Binding site 42 42 . . . Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR026534-2 Q65GB9 UniProtKB Binding site 103 103 . . . Ontology_term=ECO:0007829;evidence=ECO:0007829|PDB:6B7K Q65GB9 UniProtKB Binding site 121 121 . . . Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR026534-2 Q65GB9 UniProtKB Binding site 156 159 . . . Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR026534-2 Q65GB9 UniProtKB Binding site 161 161 . . . Ontology_term=ECO:0007829;evidence=ECO:0007829|PDB:6B7K Q65GB9 UniProtKB Binding site 176 178 . . . Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR026534-2 Q65GB9 UniProtKB Binding site 283 283 . . . Ontology_term=ECO:0007829;evidence=ECO:0007829|PDB:6B7K Q65GB9 UniProtKB Site 159 159 . . . 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:PIRSR026534-3 Q65GB9 UniProtKB Site 281 281 . . . Note=Important for substrate recognition;Ontology_term=ECO:0000256;evidence=ECO:0000256|PIRSR:PIRSR026534-3