PubMed:8288555 / 531-683 JSONTXT

{"project":"sentences","denotations":[{"id":"T5","span":{"begin":0,"end":152},"obj":"Sentence"},{"id":"T5","span":{"begin":0,"end":152},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The ferric heme iron in the heme-enzyme complex at neutral pH is six-coordinate high spin, while at alkaline pH (pKa 7.6), the complex becomes low spin."}