The crystals of a mannose-specific jacalin-related lectin from Morus nigraare merohedrally twinned

MornigaM, a lectin from Morus nigra, belongs to the mannose-binding subgrou p of the family of jacalin-related plant lectins. It was crystallized in th e P6(5) space group, with unit-cell parameters a = b = 110.74, c = 159.28 A ngstrom. The partially merohedrally twinned crystals could be detwinned and a subsequent molecular-replacement solution could be found using the coord inates of jacalin. Preliminary analysis clearly shows the tetrameric assemb ly of this protein. Furthermore, data from MornigaM crystals soaked in a ma nnose solution were collected.