Miraculin has the property of modifying a sour taste into a sweet taste. This alteration of taste perception persists for many minutes. Homotetramer; dimer of homodimer. Expressed in fruit pulp after pollination. Not expressed in seeds, stems or leaves. Glycosylated; contains as much as 13,9% of sugars (glucosamine, mannose, galactose, xylose, and fucose). Belongs to the protease inhibitor I3 (leguminous Kunitz-type inhibitor) family. The sweet side of life - Issue 17 of December 2001