##gff-version 3 P29786 UniProtKB Signal peptide 1 20 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255 P29786 UniProtKB Propeptide 21 27 . . . ID=PRO_0000028239;Note=Activation peptide P29786 UniProtKB Chain 28 254 . . . ID=PRO_0000028240;Note=Trypsin 3A1 P29786 UniProtKB Domain 28 253 . . . Note=Peptidase S1;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00274 P29786 UniProtKB Active site 68 68 . . . Note=Charge relay system;Ontology_term=ECO:0000250;evidence=ECO:0000250 P29786 UniProtKB Active site 113 113 . . . Note=Charge relay system;Ontology_term=ECO:0000250;evidence=ECO:0000250 P29786 UniProtKB Active site 209 209 . . . Note=Charge relay system;Ontology_term=ECO:0000250;evidence=ECO:0000250 P29786 UniProtKB Site 203 203 . . . Note=Required for specificity;Ontology_term=ECO:0000250;evidence=ECO:0000250 P29786 UniProtKB Disulfide bond 53 69 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00274 P29786 UniProtKB Disulfide bond 178 194 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00274 P29786 UniProtKB Disulfide bond 205 229 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00274 P29786 UniProtKB Alternative sequence 18 19 . . . ID=VSP_035031;Note=In isoform A. Missing;Ontology_term=ECO:0000305;evidence=ECO:0000305 P29786 UniProtKB Sequence conflict 14 17 . . . Note=GLSQ->DSAK;Ontology_term=ECO:0000305;evidence=ECO:0000305 P29786 UniProtKB Sequence conflict 66 66 . . . Note=A->R;Ontology_term=ECO:0000305;evidence=ECO:0000305 P29786 UniProtKB Sequence conflict 136 136 . . . Note=E->D;Ontology_term=ECO:0000305;evidence=ECO:0000305 P29786 UniProtKB Sequence conflict 215 215 . . . Note=S->F;Ontology_term=ECO:0000305;evidence=ECO:0000305 P29786 UniProtKB Sequence conflict 218 218 . . . Note=K->E;Ontology_term=ECO:0000305;evidence=ECO:0000305