PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11489845-6 2001 We present evidence that the primary role of the minor sterol esterification isoform encoded by ARE1 is to esterify sterol intermediates, whereas the role of the ARE2 enzyme is to esterify ergosterol, the end product of the pathway. Ergosterol 189-199 sterol acyltransferase Saccharomyces cerevisiae S288C 162-166 11489845-13 2001 Conversely, Are2p is optimally required during aerobiosis when ergosterol is plentiful. Ergosterol 63-73 sterol acyltransferase Saccharomyces cerevisiae S288C 12-17