662 



INDEX 



crystal, 462-463 

 x-ray diffraction, 452, 454 

 synthesis of, 155-156 

 trityl derivative of, 146 

 ultraviolet absorption of, 508, 515 

 uridine hydrolase and, 606 

 uridine phosphorylase and, 606 

 Cytidine benzyl phosphate h, 

 nucleases and, 432 

 ribonuclease and, 430 

 Cytidine diphosphate, 

 cysteine reaction and, 292 

 diesterase and, 434 

 ion-exchange of, 230-231 

 production of, 434-435 

 ultraviolet absorption of, 513 

 Cytidine methyl phosphate a, ribo- 

 nuclease and, 430 

 Cytidine-2'-phosphate, ultraviolet ab- 

 sorption of, 512-514 

 Cytidine-2',3'-phosphate, see also Nu- 

 cleotides, cyclic 

 ribonuclease and, 425 

 synthesis, enzymatic, 566 

 Cytidine-3'-phosphate, 

 deamination of, 425 

 esters, ribonuclease and, 565 

 identification of, 62 

 ribonuclease and, 425, 562 

 ultraviolet absorption of, 512-514 

 Cytidine-5'-phosphate, 62 

 esters, ribonuclease and, 565 

 ion-exchange of, 241 

 proof of structure, 164-165 

 synthesis of, 174 

 ultraviolet absorption of, 513 

 Cytidylic acid, 4, 120, see also Cytidine 

 phosphates 

 apurinic acid and, 367-368 

 deamination of, 260, 599 

 dissociation constants, 459-460 

 esters, hydrolysis of, 417 

 ion-exchange of, 222, 223, 224 

 ionization of, 268-269 

 isolation of, 169 

 isomers, 38 



dissociation constants of, 460-461 

 hydrolysis of, 169 

 identification of, 169 

 infrared absorption and, 545 

 ion-exchange of, 226-228 



phosphate position in, 189 

 separation of, 169 

 ultraviolet absorption of, 497, 551 

 paper chromatography of, 255-256, 257 

 pentose nucleic acid, 

 cytoplasmic, 400 

 liver, 397-398 

 ratios, 407 

 virus, 405 

 yeast, 402 

 Cytidylyl-cytidine, synthesis, enzymatic, 



566 

 Cytochrome, 15 

 Cytoplasm, 

 birefringence of, 538-539 

 fractions, pentose nucleic acid, 400- 

 401, 406 

 Cytosine, 3, 14, 90, 138, 140, 346, 622 

 amino group of, 448 

 antibiotics and, 135 

 cationic exchange of, 218 

 color tests for, 123, 305 

 deamination of, 118, 195 

 dihydroorotic acid dehydrogenase and, 



621 

 discovery of, 87 



dissociation constants of, 456, 457 

 glutamate and, 600 

 ionization of, 268 



nucleohistone fractionation and, 362 

 nucleoside phosphorylases and, 605 

 oxidation of, 120, 121 

 paper chromatography, 249, 250, 253, 



254 

 reduction of, 119, 120 

 stability to acids, 117 

 synthesis of, 87-88, 126, 127-128 

 thymidine phosphorylase and, 605 

 thymine estimation and, 304 

 thymic acid and, 341 

 ultraviolet absorption of, 499, 502, 504 

 uracil oxidase and, 622 

 Cytosine deaminase, specificity of 599 

 Cytosine deoxyribodiphosphoric acid, 



formation of, 197 

 Cytosine deoxyriboside, 48, 57, 139, 140, 

 see also Deoxycytidine 

 ultraviolet absorption of, 504, 508, 516 

 Cytosine deoxyriboside deaminase, 14 

 Cytosine deoxyribose diphosphate, 172 

 paper chromatography of, 255 



