[en] The masses of $uuddbar s $, $uuddbar d$, and $uussbar d$ pentaquarks are evaluated in a framework of both the Effective Hamiltonian approach to QCD and spinless Salpeter using the Jaffe-Wilczek diquark approximation and the string interaction for the diquark-diquark-antiquark system. The masses of the light pentaquarks are found to be in the region above 2 GeV. The similar calculations yield the mass of $[ud]^2bar c$ pentaquark $sim$ 3250 MeV and $[ud]^2bar b$ pentaquark $sim$ 6509 MeV.
