PMC:1140370 / 5391-5406 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T1684","span":{"begin":7,"end":11},"obj":"NN"},{"id":"T1686","span":{"begin":11,"end":12},"obj":"HYPH"}],"text":"essing His6-Mcm"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T1642","span":{"begin":7,"end":10},"obj":"CHEBI_SO_EXT:histidine"}],"text":"essing His6-Mcm"}