Structure functions of sea quarks, Kogut-Susskind pole and dynamics of pp- and pp-bar-interactions at high energies

It is shown that anomalous behavior of the spin-dependent proton structure function g(sub 1)(sup P)(x) is defined by the contribution to this structure function as x(yields)0 of a new Regge trajectory caused by Kogut-Susskind pole. It is pointed out that manifestation of a new trajectory in pp- and pp-bar-interactions allows us to explain some peculiarities of these reactions at high energies.