"Data suggest that antinociceptive agent SBFI-26 binds at a portal site as well as at the canonical site in the substrate pocket of FABP5 and FABP7; only the S form of SBFI-26 binds to both FABP5 and FABP7 in their co-crystal structures; SBFI-26 induces conformational changes in FABP5 and FABP7."xsd:string