PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17525477-8 2007 Intrinsic tryptophan fluorescence of both apoM variants revealed that retinol, all-trans-retinoic acid, and 9-cis-retinoic acid bound (dissociation constant = 2-3 microM), whereas other tested substances (e.g., cholesterol, vitamin K, and arachidonic acid) did not. Alitretinoin 108-127 apolipoprotein M Homo sapiens 42-46