PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19839596-2 2009 A colorimetric assay to measure hippuric acid (HA) was transformed into a rapid ACE assay wherein the released HA from the substrate hippuryl-histidyl-leucine (HHL) is mixed with pyridine and benzene sulfonyl chloride. pyridine 179-187 angiotensin I converting enzyme Homo sapiens 80-83