688 



INDEX 



Thymidine phosphates, synthesis of, 175 

 Thymidine phosphorylase, 63, 602 



animal, 



equilibrium, 605 

 properties, 605 

 specificity, 605 



inhibition of, 605 

 Thymidylic acid, 171, 172, 441, 579 



apurinic acid and, 367-368 



carbazole-sulfuric acid reaction and, 

 298-299 



cysteine reaction and, 291-292, 294 



cysteine-sulfuric acid reaction and, 295 



diphenylamine and, 287-288 



estimation of, 299 



indole-hydrochloric acid reaction and, 

 298 



ion -exchange of, 223 



paper chromatography of, 257 



ultraviolet absorption of, 512, 513 

 Thymine, 3, 14, 48, 118, 123, 341, 346, 347 



arsenotungstic acid reaction and, 305 



cationic exchangers and, 218 



color reaction for, 304-305 



degradation of, 622 



dihydroorotic acid dehydrogenase and, 

 621 



discovery of, 86 



dissociation constants of, 456, 457 



ionization of, 268 



isotopic, degradation of, 121 



nucleohistone fractionation and, 362 



oxidation of, 120, 121, 622-623 



paper chromatography of, 249, 251 



perchloric acid and, 258 



polarography and, 120 



reducing agents and, 120 



stability to acids, 117 



synthesis of, 86-87, 125, 126 



thymidine formation from, 63 



thymidine phosphorylase and, 605 



ultraviolet absorption of, 123, 499, 503, 

 506 

 Thymine deoxyribodiphosphoric acid, 



formation of, 197 

 Thymine deoxyriboside, see Thymidine 

 Thymine glycol, formation of, 121 

 Thymine nucleosides, synthesis of, 155- 



156 

 Thymine xyloside, 87 

 Thyminose, 11 



Thyminyl alcohol, 92 

 Thyminylamine, 92 

 Thymus, 



deoxyribonucleases of, 584 

 deoxyribonucleate isolation from, 



323-324, 325-326, 326-327, 327-328 

 nucleohistone isolation from, 313-314 

 pentose nucleic acid of, 398 

 Titration, electrometric, nucleic acids 



and, 410 

 Tobacco mosaic virus, 277, 319 

 dichroism of, 541-542 



infrared, 550 

 hydrolysates, electrophoresis, 284 

 molecular weight of, 383-384, 475 

 nucleotides of, 405 

 particle size, 383-384 

 pentose nucleic acid isolation from, 389 

 protein, 



composition, 383 

 orientation, 550-551 

 x-ray diffraction of, 461 

 Tobacco ring spot virus, composition of, 



383 

 2-0-p-Toluenesulfonyl-^-L-arabinoside, 



deoxyribose synthesis and, 51-52 

 Toluidine blue, dichroism and, 544 

 Transforming activity, 338 



nucleic acid denaturation and, 339 

 2,3, 4-Triacetyl-5-benzyl-D-ribose, ade- 

 nosine synthesis from, 153 

 2,4, 5-Triamino-6-hydroxypyrimidine, 



guanine synthesis and, 132 

 4 , 5 , 6-Triaminopyrimidine, 

 adenine synthesis and, 132 

 reaction with formylmorpholine, 133 

 4,5,6- Triaminopyrimidine - 2 - sulfinic 



acid, adenine synthesis and, 132 

 Trichloroacetic acid, paper chromatog- 

 raphy and, 256 

 2,6,8-Trichloropurine, 85 



sj^nthesis of, 130 

 2,6,8-Trichloropurine nucleosides, syn- 

 thesis of, 149-150 

 Triethylamine, purine synthesis and, 130 

 Trihydroxyglutaric acid, 12, 141 

 2,6,8-Trihydroxypurine, see Uric acid 

 2,4,6-Trihydroxypyrimidine, see Barbi- 

 turic acid 

 Trimethoxyglutaric acid, 42 



