PubMed:821948 / 91-306 JSONTXT

{"project":"sentences","denotations":[{"id":"T2","span":{"begin":0,"end":215},"obj":"Sentence"},{"id":"T2","span":{"begin":0,"end":215},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"GTP cyclohydrolase I, an enzyme that catalyzes the first reaction in the pathway for the biosynthesis of the pteridine portion of folic acid, was purified from Escherichia coli by 3,900-fold to apparent homogeneity."}

{"project":"NCBITAXON","denotations":[{"id":"T2","span":{"begin":160,"end":176},"obj":"OrganismTaxon"}],"attributes":[{"id":"A2","pred":"db_id","subj":"T2","obj":"562"}],"text":"GTP cyclohydrolase I, an enzyme that catalyzes the first reaction in the pathway for the biosynthesis of the pteridine portion of folic acid, was purified from Escherichia coli by 3,900-fold to apparent homogeneity."}