170 



R. P. Levine 



biosynthesis of some of these components. The establishment of the loss or 

 alteration of any one component in a given strain, taken in conjunction with what 

 we have learned about the strain's loss of photosynthetic reactions, can provide 

 strong evidence for the function of such a component. 



Clearly, we have merely commenced an extensive series of investigations, 

 for we have by no meams exhausted all of the opportunities for different kinds of 

 experiments with the four mutant strains, and we have yet to investigate in any 

 detail some 15 additional mutant strains. 



ACKNOWLEDGMENTS 



The preparation of this paper was greatly facilitated by discussions with 

 Dr. George K. Russell, and the research reported here with C. reinhardi has 

 been the collaborative effort of several people. I wish to acknowledge particu- 

 larly that of Dr. Robert Smillie, Dr. George K. Russell, Dr. Shirley Raps, 

 Mr. Gerald J. Roth, Mr. Gabriel Gingras, and Mrs. Elizabeth E. Levine. 



I also wish to acknowledge the technical assistance of Miss Joanne 

 Brungard. 



The research reported here has been supported in part by a research 

 grant from the National Science Foundation, and by research grants from the 

 National Institute of Allergy and Infectious Diseases and the Division of General 

 Medical Sciences, United States Public Health Service. 



LITERATURE CITED 



1. Emerson, R. , Sci. , 125 , 746(1957), Emerson, R. , Chalmers, R. , and 

 Cedarstrand, C. , ProcT Nat. Acad. Sci. (U.S.), 43, 133(1957), 

 Emerson, R. and Chalmers, R. , Phycol. Soc. Amer. News Bull., 11, 

 51 (1958), and Emerson, R. and Rabinowitch, E. , Plant Physiol., ^, 

 477, 1960. 



2. Hill, R., and Bendall, F. , Nature, 186 , 136(1960). 



3. "The Photochemical Apparatus, Its Structure and Function, " Brookhaven 

 Symposia in Biology, 11 (1958). 



4. "Light and Life, " W. D. McElroy and H. B. Glass (Editors), Johns 

 Hopkins Press, Baltimore ( 1961). 



5. Colloq. Intern. Photosynthese, Centre National de la Recherche 

 Scientifique, Paris, No. 119(1963), in press. 



Levine, R. P., Proc. Nat. Acad. Sci. (U.S.), 46, 972(1960). /^^i^-~^'^ 



|uu( LIBRARY j^ 



