##gff-version 3 P35043 UniProtKB Chain 1 165 . . . ID=PRO_0000088717;Note=Trypsin alpha-3 P35043 UniProtKB Domain 1 163 . . . Note=Peptidase S1;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00274 P35043 UniProtKB Active site 26 26 . . . Note=Charge relay system;Ontology_term=ECO:0000250;evidence=ECO:0000250 P35043 UniProtKB Active site 119 119 . . . Note=Charge relay system;Ontology_term=ECO:0000250;evidence=ECO:0000250 P35043 UniProtKB Site 113 113 . . . Note=Required for specificity;Ontology_term=ECO:0000250;evidence=ECO:0000250 P35043 UniProtKB Disulfide bond 89 106 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00274 P35043 UniProtKB Disulfide bond 115 139 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00274 P35043 UniProtKB Non-terminal residue 1 1 . . . .