Aleuria Aurantia Lectin (AAL) is a dimer of two identical subunits of about 36 kDa each. Unlike Ulex europaeus and Lotus tetragonolobus lectins which prefer (a -1,2) linked fucose residues, Aleuria aurantia lectin binds preferentially to fucose linked (a -1,6) to N-acetylglucosamine or to fucose linked (a -1,3) to N-acetyllactosamine related structures. AAL also reversibly binds fucose attached to nucleic acids. Agarose Bound Aleuria Aurantia Lectin is prepared using affinity-purified lectin and heat stable, cross-linked 4% agarose beads. The attachment of the lectins through a hydrophilic spacer arm to the beads is carefully controlled to preserve lectin activity and minimize conformational changes of the bound lectins. The recommended inhibiting/eluting sugar is 100 mM L-fucose.