  Self-similar properties of proton structure in the kinematic region of low
Bjorken x are introduced and studied numerically. A description of the proton
structure function F2(x,Q2) reflecting self-similarity is proposed with a few
parameters which are fitted to recent HERA data. The specific parameterisation
provides an excellent description of the data which cover a region of four
momentum transfer squared, 0.045 < Q2 < 120 GeV2, and of Bjorken x, 6.2E-7 < x
< 0.01.
