Maackia amurensis Lectin (MAA/MAL II)-Biotinylated is a biotin-modified plant lectin that recognizes specific carbohydrate structures, particularly α-2,3 linked sialic acids. It exhibits high affinity for avidin or streptavidin, facilitating its attachment to solid surfaces or binding with other molecules. This lectin is useful in affinity chromatography for the isolation and purification of proteins or other molecules with specific glycan structures, and it aids in disease biomarker discovery and cancer research.