  We present an analysis of genuine twist-3 quark contributions to the
amplitude of exclusive electro-production of transversely polarized vector
mesons. Using the formalism based on the momentum representation we calculated
all the genuine twist-3 terms of quark contributions to gamma_T^* --> rho_T
amplitude. We found that these terms can not be factorized owing to the
existence of the infrared divergencies in the amplitude of hard sub-processes.
