has part has part has_part has role has role is conjugate acid of is conjugate base of polar amino acid threonine PMID:15221503 PMID:11379295 0 An alpha-amino acid in which one of the hydrogens attached to the alpha-carbon of glycine is substituted by a 1-hydroxyethyl group. 119.119 CHEBI:26986 Threonin Wikipedia:Threonine C4H9NO3 chebi_ontology 119.05824 Beilstein:8204750 CAS:80-68-2 threonine PMID:22264337 threoninate threoninium 2-amino-3-hydroxybutanoic acid 1-hydroxyethyl group Daphnia magna metabolite