part of oligosaccharide transmembrane transporter activity raffinose transmembrane transporter activity raffinose permease GO:0015158 Enables the transfer of raffinose from one side of a membrane to the other. Raffinose occurs in plants almost as commonly as sucrose and is present in cereal grains, cotton seeds, and many legumes. It is synthesized from sucrose by transfer of a galactopyranoside from myo-inositol. molecular_function raffinose transport