atROL binds to RBP2 to form RBP2:atROL Authored: Stephan, R, 2010-09-19 Edited: Jassal, B, 2010-10-01 In enterocytes, the dominant retinol-binding protein is RBP2 (CRBPII) which is abundant and binds retinol faster than the cell membrane. So, even though lipophilic retinol can easily enter the cell membrane of bowel enterocytes, it is collected by the abundancy of RBP2 into the enterocyte cytosol where it is further processed (Inagami & Ong 1997). Membrane retinol binds to cytosolic RBP2 Pubmed1542003 Reactome Database ID Release 43975633 Reactome, http://www.reactome.org ReactomeREACT_25146 Reviewed: D'Eustachio, P, 2010-11-09 RBP2:atROL