  Using the analytical expression for transverse momentum dependent (TMD) gluon
density in a proton, a self-consistent simultaneous description of low $Q^2$
data on proton structure function $F_2(x,Q^2)$, reduced cross section for the
electron-proton deep inelastic scattering at HERA and soft hadron production in
$pp$ collisions at the LHC is achieved in the framework of color dipole
approach and modified quark-gluon string model.
