  We study unification in the Randall-Sundrum scenario for solving the
hierarchy problem, with gauge fields and fermions in the bulk. We calculate the
one-loop corrected low-energy effective gauge couplings in a unified theory,
broken at the scale M_GUT in the bulk. We find that, although this scenario has
an extra dimension, there is a robust (calculable in the effective field
theory) logarithmic dependence on M_GUT, strongly suggestive of high-scale
unification, very much as in the (4D) Standard Model. Moreover, bulk threshold
effects are naturally small, but volume-enhanced, so that we can accommodate
the measured gauge couplings. We show in detail how excessive proton decay is
forbidden by an extra U(1) bulk gauge symmetry. This mechanism requires us to
further break the unified group using boundary conditions. A 4D dual
interpretation, in the sense of the AdS/CFT correspondence, is provided for all
our results. Our results show that an attractive unification mechanism can
combine with a non-supersymmetric solution to the hierarchy problem.
