PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23593226-3 2013 In this study, we determine that the oxysterol binding protein family member Kes1 is required to maintain the ratio of complex sphingolipids and levels of ceramide, sphingosine-phosphate and sphingosine. Sphingosine 165-176 oxysterol-binding protein KES1 Saccharomyces cerevisiae S288C 77-81