The wide binding properties of a wheat nonspecific lipid transfer protein - Solution structure of a complex with prostaglandin B-2

The 3D solution structure of wheat nonspecific lipid transfer protein (ns-L TP) complexed with prostaglandin B-2, a lipid with both vinyl and hydroxyla ted groups, has been determined by H-1 2D NMR. The global fold of the prote in is close to the previously published structures of wheat, maize, barley and rice ns-LTPs. The Ligand is almost completely embedded in the hydrophob ic core of the protein. Structure comparisons of free and bound wheat ns-LT P reveal that the binding of prostaglandin B-2 hardly affects the global fo ld of the protein. The structural data on this unusual complex are discusse d and compared with other known ns-LTP lipid-complexes.