##gff-version 3 P25257 UniProtKB Chain 1 274 . . . ID=PRO_0000077310;Note=Type II restriction enzyme HgiBI P25257 UniProtKB Mutagenesis 176 176 . . . Note=Increased specific activity. S->D;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:7607523;Dbxref=PMID:7607523