The strange asymmetry of the proton sea

We present a phenomenologically motivated parameterization of the s and (s) over bar parton distribution functions in the proton, calculated in the framework of the Meson Cloud Model. Parameters of the model have been fixed by comparing to a recent parameterization of the strange asymmetry of the proton sea, which has emerged from a global fit to Deep Inelastic Scattering data. The model reproduces quite well the the asymmetry of the strange sea of the proton.