Triple point mutation in the RAM domain (amino acid replacements W1776L, F1777L and P1778A), which mutates the Su(H) protein binding sites.
Expression of NRam*Δ3.Scer\UAS under the control of Scer\GAL4sca-537.4 only results in very weak rescue of the severe hyperplasia of the central and peripheral nervous systems seen in N55e11 mutant embryos.
Carried in a plasmid and transfected into S2 cells to study protein-protein interactions between Su(H) and N.