PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12123654-5 2002 The method first involves the limiting step of the CYP-dependent reaction, which is stopped with a mixture of zinc sulfate 5 mM and trichloroacetic acid 100 mM. Zinc Sulfate 110-122 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 51-54