326 ELECTRON TRANSPORT 



8. Tagawa, K., and Arnon, D, I., Ferredoxins as electron carriers in photo- 

 synthesis and in the biological production and consumption of hydrogen gas. 

 Nature, 195, 537 (1962). 



9. Bartsch, R. G., and Kamen, M. D., Isolation and properties of two soluble 

 heme proteins in extracts of the photoanaerobe Chroinatiion. J.Biol .Chem., 

 235, 825 (1960). 



10. Bartsch, R. G., Chromatium iron protein. Federation Proc, 21, 47 (1962). 



11. Kamen, M. D., Bartsch, R. G., Horio, T., and deKlerk, H., Some bacterial 

 cytochromes. In Methods in Enzyinology, ed. by S. P. Colowick and N. O. 

 Kaplan, Vol. VI, Academic Press, New York, in press. 



12. Hill, R., The cytochrome b component of chloroplasts. Nature, 174, 501 

 (1954). 



13. Sandell, E. B., Colorimetric Determination of Traces of Metals. Inter- 

 science Publishers, Inc., New York, 1944. 



14. Massey, V., Valency state of the iron in beef heart succinic dehydrogenase. 

 J. Biol. Chem., 229, 763 (1957). 



15. Fry, K. T., and San Pietro, A., Studies on photosynthetic pyridine nucleotide 

 reductase. Biochem. Biophys. Res. Comms., 9, 218 (1962). 



16. Spackman.D. H., Stein, W. H., and Moore, S., Automatic recording appara- 

 tus for use in the chromatography of amino 2Lcids. Anal . Chem., 30, 1190 

 (1958). 



17. Patschornik, A., Lawson, W. B., and vVitkop, B., The tryptophyl peptide 

 bond and the cleavage of glucagon. J. Am. Chem. Soc., 80, 4747 (1958). 



18. Sanger, F., The free amino group of insulin. Biochem. J., 39,507 (1945). 



19. Bradbury, J. H., The kinetics of hydrazine lysis of simple peptides in anhy- 

 drous hydrazine. Biochem. J., 68, 475 (1958). 



20. Partridge, S. M., Aniline hydrogen phthalate as a spraying reagent for 

 chromatography of sugars. Nature, 164, 443 (1949). 



21. Crane, F. L., Lester, R. L., Widmer, C., and Hatefi, Y,, Isolation of coen- 

 zyme Q (Q275) from beef heart and beef heart mitochondria. Biochim. 

 Biophys. Acta, 32, 73 (1959). 



22. Olson, J. M., and Chance, B., Oxidation-reduction reactions in the photo- 

 synthetic bacterium Chromatium. I. Absorption spectrum changes in whole 

 cells. Arc/?. Biochem. Biophys., 88, 26 (1960). 



