595 



Lester Packer 



13. Itoh, M., Izava, S. and ShilData, K., Biochim. Biophys. Acta, 



69:130 (1963). 

 ik, ^^atley, F.R. and Arnon, D.I., Methods in Enzymology , vol. VI 



edited ijy S.F. Colowick and N.O. Kaplan, in press. 



15. Horwitt, B.N., J. Biol. Chem., 199:537 (l952). 



16. Avron, M., J. Biol. Chem., 237:2011 (1962). 



17. Petrack, B. and Lipmann, F., in Light and Life, edited by 

 W.D. McElroy and B. Glass, Johns Hopkins Press, Baltimore, 

 1961, p. 621. 



18. Marchant, R.H. and Packer, L., suhmitted for publication. 



19. Hoch, G. and Martin, I., Biochem. Biophys. Res. Coram., 12:223 



(1963). 



20. Marchant, R.H. and Packer, L., Biochim. Biophys. Acta, in 

 press. 



21. Mxikohata, Y. and Packer, L., in preparation. 



200 



I 



t 



ON 



ON 



Figure 1. Action of phosphate on scattering changes 

 induced by red light in spinach chloroplasts. The 

 reaction system contained Tris (0.02 M, pH 8.0), 

 NaCl (0.035 M), MgClg (0.005 M), ADP (O.OOl M), as- 

 corbate (O.OOl M), phenazine methosulfate (20 I-M), 

 and chloroplasts (5 Mg/ml chlorophyll). Temperature 

 was accurately controlled during periods of illumi- 

 nation at 25^ ± 0.1°C, by circulating liquid around 

 the jacketed cuvette in the light- scattering photo- 

 meter. Scattered liglat vas filtered at 5^ MJ- to 

 prevent interference by actinic red light. 



