PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16597434-7 2006 The purified protein is a monomer in the presence of 1% sodium cholate as determined by gel filtration analysis, suggesting that this membrane anchor-truncated form of P450c21 is more soluble than the native form. Sodium Cholate 56-70 steroid 21-hydroxylase Bos taurus 168-175