[Multielectron enzymatic reactions. The energy of medium reorganization]

Reasons are considered favouring the enzymatic reactions of simultaneous charge transfer in comparison to similar chemical reactions. The reorganization energy of enzymatic multielectron reactions reduces to the level usual for chemical one-electron reactions due to the action of the following factors: a) low dielectric permeability of proteins; b) large reactants radii and optimization of their ratio; c) incorporation of substrate into the coordination sphere of the charge donor; d) transition from two-centre to multi-centre processes, i.e. simultaneous participation in reaction of several donors and/or acceptors of charge.