  The $e^{+}p$ and $e^{-}p$ scattering data recorded at HERA during the recent
years offer the possibility to study electroweak effects in $ep$ interactions
apparent at high momentum transfers, $Q^{2}$, and to reveal information on the
proton parton densities at large values of the Bjorken scaling variable x.
  From the neutral current cross section measurements, H1 and ZEUS extract the
generalized structure function $x{\cal F}_{3}$, which can be related to the
valence quark content of the proton. Individual quark densities are extracted
by a global fit to the H1 neutral and charged current $e^{+}p$ and $e^{-}p$
data. The new results show the sensitivity of high $Q^{2}$ $ep$ data to the
structure of the proton and indicate what to expect from a 1 fb$^{-1}$ data
sample to be taken by H1 and ZEUS until 2006 at the upgraded HERA collider.
Future perspectives concerning the investigation of electroweak effects and
their utilization to extract the parton content of the proton are shortly
discussed.
