ISOLATION AND COMPOSITION OF DEOXYPENTOSE NUCLEIC ACIDS 



359 



TABLE XII 



Purine and Pyrimidine Contents of Sodium Deoxypentose Nucleate 



Preparations from Microorganisms, etc. 



Proportions in moles of nitrogenous constituent per 100 g. -atoms of P 



in hydrolysate, corrected for a 100% recovery* 



• Compare footnotes in Table VII. 



References 



" E. Vischer et al.. J. Biol. Chem. 177, 429 (1949). 



* S. Zamenhof and E. Chargaff, J. Biol. Chem. 187, 1 (1950). 



' M. M. Daly el al., J. Gen. Physiol. 33, 497 (1950); chromatography of free bases on starch columns. 



"* S. Zamenhof et al., Biochim. et Biophys. Acta 9, 402 (1952). 



' J. D. Smith and G. R. Wyatt, Biochem. J. 49, 144 (1951). 



•^ B. Gandelman et al., Biochim. et Biophys. Acta 9, 399 (1952). 



" S. G. Laland et al., J. Chem. Soc. 1952, 3224. 



^ G. R. Wyatt and S. S. Cohen, Nature 170, 846 (1952). 



* G. R. Wyatt and S. S. Cohen. Biochem. J. 55, 774 (1953). 



