BENTLEY GLASS 



879 



've-' 



■^PMS 



Chi '+W 



LIGHT 



Cyclic photophosphorylation (PMS type) 

 Fig. 8. Scheme for anaerobic cyclic photophosphorylation catalyzed by 

 phenazine methosulfate (PMS). 



commonest results of illumination is the expulsion of an electron 

 from an activated molecule. In the chloroplast, the resulting po- 

 tential "hole" or "odd ion" might persist while the expelled elec- 

 tron is reaching the first intermediary electron carrier by resonance 

 transfer or a semiconductor mechanism and is thereafter travelling 

 by closed circuit back to the chlorophyll molecule. The evidence 





■^Cof actor 



Ctil 



K*;^ 



r~P 



t 



■Cyt 



ADP 



LIGHT ~P— adF 



Anaerobic cyclic photophosphorylation 

 Fig. 9. Scheme for anaerobic cyclic photophosphorylation catalyzed by vitamin 



K3 or FMN. 



