Large-scale purification and preliminary structural studies of MAC 182, a gibberellin-binding monoclonal antibody.

The large-scale purification of the anti-gibberellin monoclonal antibody, MAC 182, is described. N-Terminal amino acid sequences of the heavy and light chains were determined and compared with those of known antibodies. Fab-fragments were prepared and purified to a state suitable for crystallization.

New monoclonal antibodies to 3 beta-hydroxy-gibberellins.

Two new monoclonal antibodies to 3 beta-hydroxy-gibberellins are described. Monoclonal antibodies GA1-1 and GA1-2 were derived from immunizations with the hapten-protein conjugate gibberellin A1-17-KLH. Cross-reactivities with a panel of 43 gibberellins and gibberellin derivatives are compared with those of other anti-gibberellin monoclonal antibodies.