In this paper we propose to discuss the electromagnetic structure of the proton in the framework of the violation hypothesis of discrete symmetries. Analysis is performed with help of the general method of the Lorentz-covariant local operator matrix element parametrization. The proposed analysis allows to solve the problem of the "non-Rosenbluth" behavior of the electromagnetic proton form factors. It is shown that the CP-violation effects give rise to the additional anapole proton form factor.

In the paper the construction of the electromagnetic current operator for three-body composite system is discussed in the framework of instant form of relativistic quantum mechanics. The construction has performed at the conditions of the current conservation and Lorentz-covariance. The electromagnetic form factor for free system of three fermions with quantum numbers of nucleon is calculated.