682 



INDEX 



ribonuclease and, 427, 562, 575 

 separation of, 562 

 molar absorptivities and, 521 

 3'-nucleotidase and, 593 

 nucleotide sequence in, 436^39 

 phosphate, position of, 420-421 

 Polyphosphates, nucleoside, ion-ex- 

 change of, 230-232 

 Polyribophosphate, 60 

 Polysaccharides, 562 

 contamination by, 350 

 nucleic acid separation from, 333 

 ribonuclease and, 572 

 Polytomella caeca, cytoplasm, reaction 



with pentose nucleic acid, 381 

 Polyvinyl alcohol, deoxypentose nucleic 



acid and, 529 

 Potassium bromide, infrared spectros- 

 copy and, 546-547 

 Potato virus X, pentose nucleic acid, 



nucleotides of, 405 

 Proflavine, paper chromatography and, 



265 

 Propanol, paper chromatography and, 



249, 264-265 

 Protamines, 2 



diphenylamine and, 289-290 

 occurrence of, 311 

 reaction with nucleic acid, 320-321 

 Proteins, 

 conjugated, 

 classification, 311 

 definition, 309 

 contamination by, 350 

 cysteine-sulfuric acid reaction and, 



295-296 

 deoxypentose nucleic acid absorptivity 



and, 531-532 

 infrared dichroism and, 550 

 nucleic acid combination, 530-532 

 pentose nucleic acid separation from, 



380 

 ultraviolet absorption of, 530 

 Protein nucleate, 310 

 Pseudovitamin B12, adenine and, 95 

 Pseudovitamin Bi2d, purine in, 136 

 keto -T>-psicose, 47-48 

 Pterins, xanthine oxidase and, 613 

 Purine, 

 isolation of, 93 

 reduction of, 119 



stability of, 116-117 

 synthesis of, 130-131, 132 

 Purine deoxyribonucleotides, formation 



of, 162 

 Purine nucleosidases, history of, 601-602 

 Purine nucleoside hydrolase, bacterial, 



607 

 Purine nucleoside phosphorylase, 

 animal, specificity, 602-603 

 microorganismal, 



assay, 604 



hydrogen ion concentration and, 603- 

 604 



kinetics, 604 



mechanism of action, 603 



stability, 604 

 purification of, 602 

 Purine nucleosides, stability of, 192 

 Purine nucleotides, 

 hyperchromia effect and, 569-570 

 linkage in ribonucleic acid, 432 

 paper chromatography of, 255, 257 

 ribonuclease and, 423-424, 563 

 Purines, 



anionic exchange of, 219-220 

 arsenotungstic acid reaction and, 305 

 cellular, 138 



color reactions for, 303-304 

 counter-current distribution of, 110 

 deoxy ribonuclease and, 577-578 

 detection on paper, 245-247 

 discovery of, 2 



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

 electrophoresis of, 272-273 

 enolic hydroxyls of, 411 

 estimation, 260-263 



pentose nucleic acid, 199-209, 394 



procedure, 202-204 

 hydrogen bonding of, 464-467 

 identification of, 110-116 

 infrared absorption of, 547 

 isotopic, 



synthesis of, 131, 133 



ultraviolet absorption of, 551-552 

 liberation from nucleic acids, 193, 196, 



258 

 naturally occurring, 84-86 

 nomenclature of, 83-84 

 paper chromatography of, 250, 255 

 physical properties of, 108-109 

 ratio in pentose nucleic acid. 397 



