[The "protein-machine" concept and its consequences]

Analysis is presented of the concept "protein-machine" and implying consequences, both of theoretical and experimental character. The approach "protein-machine" is compared with other approaches--"coherent excitation", "molecular dynamics" and "limited diffusion". In terms of the approach "protein-machine" valuable information inserted in the biological macromolecule and determining its functions is taken into account. It reflects the biological specificity and at the same time removes mystic shadow from this concept.