597 



Lester Packer 



Minutes 



Figiure U. Role of pre- illumination time on dark action 

 of ATP on chloroplast structure. Conditions for scat- 

 tering experiments as in figure 5« To start the ex- 

 periment 1 iriM ATP vas added in the dark, and 60 seconds 

 afterwards actinic light was tiorned on for the times 

 indicated on the curves. 



10 20 



Minutes 



Figiore 5« Time course of ATP hyidrolysis and scat- 

 tering changes in chloroplasts . 



