  We consider non(anti)commutative (NAC) deformations of d=1 N=2 superspace. We
find that, in the chiral base, the deformation preserves only a half of the
original (linearly realized) supercharge algebra, as it usually happens in NAC
field theories. We obtain in terms of a real supermultiplet a closed expression
for a deformed Quantum Mechanics Lagrangian in which the original
superpotential is smeared, similarly to what happens for the two dimensional
deformed sigma model. Quite unexpectedly, we find that a second conserved
charge can be constructed which leads to a nonlinear field realization of the
supersymmetry algebra, so that finally the deformed theory has as many
conserved supercharges as the undeformed one. The quantum behavior of these
supercharges is analyzed.
