NDEX 



209 



Pentose nucleic acids (continua- 

 tion) 

 — , regularities in composition, 52, 



66, 74, 93, 106 

 — , role in protein synthesis and in 



morphogenesis, 71 

 — , soluble, for transfer of amino 



acids in liver cytoplasm, 157 

 — , species and organ specificity, 17 

 — , sugar component in — , 18, 



84 

 Pentose nucleoproteins, fibrous, 40 

 — , links between nucleic acid and 



protein, 64, 80 

 — , occurrence, 64, 65 

 Periodicity, absence in nucleic acids, 



31, 33, 91 

 Phage Tor+ DNA, pleromeric rela- 

 tionships, 154 

 Phosphoric acid bridges in DNA, 



53, 65, 89 

 Pig tissues, action of ribonuclease 



on PNA, 34 

 — , fractional dissociation of liver 



DNA from histone and globin 



complexes, 46 

 — , RNA of liver, pancreas, 17 

 Pleromer, definition of the term — 



in polymer constitution, 131 

 Pleromeric relationships in DNA's 



(table), 154 

 — in RNA's, 155, 156 

 Pleromerism and homotopy and the 



neighbor problem in nucleic 



acids, 153-158 

 Pleromers and homotopes in DNA's, 



157 

 Pneumococcus, transformation by 



DNA, 1, 26, 71, 121, 181 

 Precursors, movement of — into 



various polymers in cellular ele- 

 ments, 115, 116 

 Prosthetic groups in conjugated 



proteins, 81 

 Protein synthesis, role of nucleic 



acids, 71, 95, 96 

 Purines, location on paper chroma- 

 tograms in ultraviolet light, 9 



Purines (continuation) 



— , molar proportions in DNA's 

 from different organs of one spe- 

 cies (table), 15 



— , from different species 



(table), 14 



— , release from nucleic acids by 

 mild acid hydrolysis, 9, 10 



— satellites in DNA's, 52 



— , schematic representation of the 

 position on paper chromatogram, 

 8 



— , separation and estimation, sol- 

 vent systems, 7-9 



— , spectrophotometric determina- 

 tion, 9 



Pyrimidine(s) distribution of the 

 total DNA of rye germ and wheat 

 germ and its fractions, 139-141 



— , location on paper chromato- 

 grams in ultraviolet light, 9 



— , molar proportions in DNA's 

 from different organs of one spe- 

 cies (table), 15 



— , from different species 



(table), 14 



— nucleoside diphosphates, forma- 

 tion by acid treatment of DNA, 

 use for study of the nucleotide 

 sequence, .91, 92, 123, 134, 135 



— nucleotides, all-thymine and all- 

 cytosine units in DNA, 149 



, liberation of the pyrimidines, 



10, 11 



, solitary and bunched — in 



DNA, 123, 148, 166 



— , occurrence in DNA as oligonu- 

 cleotide tracts containing three 

 or more pyrimidines in a row, 148 



T—, release from nucleotides by hy- 

 drolysis with concentrated formic 

 acid, 11 



— , resistance to treatment with 

 strong acid (table), 10 



— , schematic representation of the 

 position on paper chromatogram, 

 8 



— , separation and estimation, 7-9 



