INDEX 



G83 



recovery from hydrolj^sates, 202 

 reduced, ultraviolet absorption of, 552 

 salts of, 124-125 



separation from pyrimidines, 199-200 

 solubility, effect of substituents on, 110 

 spectrophotometry of, 112-116 

 structure, x-ray diffraction and, 451- 



452 

 sublimed, ultraviolet absorption of, 



501-504 

 synthesis of, 130-135 



from imidazoles, 134-135 

 from purines, 130-131 

 from pyrimidines, 131-134 

 thymine estimation and, 304 

 transamination and, 599-600 

 ultraviolet absorption of, 450-451 

 Puromycin, 15, 188 



structure of, 95, 160 

 Purone, formation from uric acid, 119 

 Pus, nucleic acids and, 1 

 Pyrazolone, formation of, 144 

 Pyridine, nucleic acid hydrolysis, and, 



198 

 Pyridine nucleotides, 15 

 Pyridoxal, purines and, 600 

 Pyridoxine, 92 

 Pyrimidine, 

 reduction of, 120 

 stability of, 116-117 

 synthesis of, 128 

 Pyrimidine deoxyribonucleoside diphos- 

 phates, structural significance of, 

 366-367 

 Pyrimidine deoxyribonucleotides, 

 dialysis of, 445 

 formation of, 162 

 Pyrimidine -2', 5'-diphosphomononucleo- 



tides, phosphodiesterase and, 586 

 Pyrimidine -3', 5'-diphosphomononucleo- 



tides, phosphodiesterase and, 586 

 Pyrimidine nucleosidases, history of, 



601-602 

 Pyrimidine nucleoside hydrolases, 

 bacterial, 607 

 yeast, 

 isolation, 606 

 mechanism of action, 606 

 specificity of, 606 

 Pyrimidine nucleoside phosphorylases, 

 specificity of, 604-605 



Pyrimidine nucleosides, 36, 123 

 stability of, 192 

 terminal, ribonuclease and, 426 

 Pyrimidine nucleotides, 

 liberation from deoxypentose nucleic 



acid, 197 

 paper chromatography of, 255 

 pentose nucleic acid isolation and, 390 

 recovery from hydrolysates, 202 

 ribonuclease and, 423-424 

 ribonucleic acid branching and, 434- 



436 

 separation from purines, 199-200 

 stability of, 194-195 

 Pyrimidines, 

 amino groups of, 547 

 anionic exchange of, 219-220 

 antimetabolites and, 104 

 bond distances in, 448-451 

 catabolism of, 619-623 

 cellular, 138 



color reactions for, 303-305 

 counter-current distribution of, 110 

 deoxyribonuclease and, 578 

 detection on paper, 245-247 

 dissociation of, 112-116, 217-218, 219 

 electrophoresis of, 272-273 

 enolic hydroxyls of, 411 

 estimation, 260-263 

 pentose nucleic acid, 199-209 

 procedure, 202-204 

 hydrogen bonding of, 464-467 

 identification of, 110-116 

 infrared absorption of, 547-548 

 isotopic, ultraviolet absorption of, 551- 



552 

 keto form of, 449-451 

 liberation from nucleic acids, 195, 197, 



258 

 naturally occurring, 86-93 

 nomenclature of, 82-83 

 paper chromatography of, 250, 255 

 physical properties of, 108-109 

 ratio in pentose nucleic acid, 397 

 reduced, ultraviolet absorption of, 552 

 resonance in, 448 

 salts of, 124-125 



solubility, effect of substituents on, 110 

 spectrophotometry of, 112-116 

 structure, x-ray diffraction and, 447- 



451 



