CytcxIO'^M ^ 



Fig. 2. The effect of the concentration of cytochrome c on the rate of oxidation 

 of lactate (dl, 002 m) by a preparation of LDH III obtained from the crude pre- 

 paration described in Fig. 1. All solutions were at pH 7-1, 0001 m EDTA was 

 added. 



+ + + In phosphate buffer, /< 001 

 O O O In phosphate buffer, /< 008 

 • • • In phosphate buffer, /< 008 + 004 m NaCl 

 Ordinate: arbitrary velocity units. 



CytcxIO'^M - 



Fig. 3. The effect of the concentration of cytochrome c on the rate of oxidation of 

 lactate (dl, 002 m) by a preparation of LDH III (the same as for Fig. 2). pH 7-9. 



O O o In glycylglycine, 0005 m 



X X X In glycylglycine, 0005 M + 004 M NaCl 

 Ordinate: arbitrary velocity units. 



