[Mobility of free radicals connected with serum albumins at 30-230 K]

This paper presents experimental results of inner dynamics study of human serum albumin by a series of physical methods: a) the method of radical pairs recombination based on measuring of recombination rate of radical pairs included to surface layers of a protein globule; b) the method of spin labels with saturation transfer technique. The complex of methods used in this work permits to measure the mobility of physical labels and environment matrix in a wide correlation frequency range 10(-4)-5.10(10) s-1 in 30-230 K temperature range. The analysis of the data obtained allows to make conclusions on the molecular mobility in surface layers of a protein globule under different conditions.