INDEX 



203 



Deoxypentose nucleoprotein(s) (con- 

 tinuation) 



— , classification according to the 

 protein moiety, 41 



— , dissociation and cleavage, be- 

 havior towards electrolytes and 

 fractionation of DNA, 45, 57, 58, 

 65 



— , fibrous structure, 40 



— , isolation by extraction with so- 

 lutions of low ionic strength, 42, 



65, 89 



— , — with strong salt solutions, 

 42, 65, 89 



— and their prosthetic groups, 39- 

 60 



Deoxyribonuclease from pancreas, 

 action on calf thymus DNA, for- 

 mation of non-dialyzable core, 

 18, 19, 28, 31, 33 



— , stepwise degradation of DNA, 

 19,91, 133 



— of yeast, inhibitor specificity, 19, 

 20 



Deoxyribonucleohistone, isolation, 

 65 



Deoxyribonucleoprotamine, isola- 

 tion, 65 



Deoxyribose nucleic acid(s) (deoxy- 

 ribonucleic acids, DNA, deoxy- 

 pentose nucleic acids), see also 

 nucleic acid(s) 



— , absence of organ specificity in 

 composition of DNA's of the 

 same species, 13, 14 



— , — of periodicity in structure, 

 33, 51 



— , arrhythmic character of nucleo- 

 tide sequence, 91 



— , AT type and GC type, 28, 51, 



66, 86, 128, 141, 165, 170, 172 

 — , balance between amino groups 



and enolic hydroxyls in various 

 DNA preparations, 32, 52 

 — , balance of 6-amino groups and 

 of 6-keto groups, 32, 52 



— of calf thymus, degradation by 

 deoxyribonuclease (table), 19 



Deoxyribose nucleic acid(s) (con- 

 tinuation) 



— , common features, 27 



— , composition, 11-13 



— , — of DNA fractions obtained 

 by fractional extractions of wheat 

 germ nucleoprotein gels (table), 

 68 



— . — in human tissues (table), 12 



— , — in normal human tissue and 

 in cancer tissue, 28 



— , — and regularities, 86-88 



— , — in several organs of the ox 

 (table), 12 



— , — of several total — (table), 87 



— , — in yeast and avian tubercle 

 bacilli (table), 13 



— content per diploid and haploid 

 nucleus, 27, 71 



— and copying mechanism, 73 



— , differential analysis of pyrimi- 

 dine distribution in three analyti- 

 cally indistinguishable — (table), 

 122 



— , dissymmetry ratios, 86 



— , diversity, 32, 57 



— , equality of sum of purine nu- 

 cleotides and sum of pyrimidine 

 nucleotides, 52, 66 



— , evidence for the existence of a 

 very large number of — in na- 

 ture, 50, 51 



— , examples of pleromeric rela- 

 tionships (table), 154, 156 



— , fractionation, 57-59, 88-89 



— , — through their artificial com- 

 plexes with histone, globin or po- 

 lylysine, 57 



— , — on histone-kieselguhr col- 

 umn, 57 



— , — at the nucleoprotein stage, 

 66-68 



— , genes and specificity of — in 

 chromosomes, 31 



— , identity of composition in dif- 

 ferent tissues of the same species, 

 27,28 



