54 



A. f!. PASSYNSKY 



content could be calculated and the thickness of its layer on the par- 

 ticles. For example, with a mean diameter of particles of 0-4/t the 

 thickness of the surface RNA layer was 160 A (Fig. 2) or about 8 RNA 

 monolayers. 



A known amount of ascorbic acid and H2O2 in equimolar ratio was 



RNP — I6OA 



Substrate — 



Fig. 2 





t(min) 

 Fig. 3 



added to half of the enzyme suspension stabilized by the surface RNA 

 layer and the kinetics of enzymic oxidation of ascorbic acid were deter- 

 mined on the contact between the enzyme and the substrate through 



