##gff-version 3 P24389 UniProtKB Chain 1 257 . . . ID=PRO_0000154313;Note=Type I iodothyronine deiodinase P24389 UniProtKB Transmembrane 13 33 . . . Note=Helical;Ontology_term=ECO:0000255;evidence=ECO:0000255 P24389 UniProtKB Active site 126 126 . . . . P24389 UniProtKB Non-standard residue 126 126 . . . Note=Selenocysteine P24389 UniProtKB Mutagenesis 158 158 . . . Note=Loss of enzyme activity. H->F%2CQ%2CN;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:1517238;Dbxref=PMID:1517238 P24389 UniProtKB Mutagenesis 174 174 . . . Note=100-fold increase in KM. H->N;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:1517238;Dbxref=PMID:1517238 P24389 UniProtKB Mutagenesis 174 174 . . . Note=20-fold increase in KM. H->Q;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:1517238;Dbxref=PMID:1517238 P24389 UniProtKB Mutagenesis 185 185 . . . Note=No effect on enzyme activity. H->N;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:1517238;Dbxref=PMID:1517238