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INDEX 



Carbonyl-phosphoric acid addition prod- 

 uct, 219 

 Carboxylase, 30, 154 

 Carboxylation of keto acids, coenzymes 



for, 153 

 Carotenoids, 22 

 Carriers, 110 

 Catabolism, of B vitamins in animals, 



351-370 

 Catalase, 153 

 "Catalins," 5 

 Catatorulin effect, 403 

 Cecectomized rats, 285 

 Cecectomy, in study of intestinal vita- 

 min synthesis, 299 

 Cell aggregates, 243 

 Chastek paralysis, 292, 402 



of foxes, 292, 400 

 Chemical energy, conservation of, 101 

 Chemosynthesis, 238 

 Chicks, 



B vitamin requirements of, 327 



DPN content of embryos, 352 



strain differences, 265 

 Children, B vitamin requirements of, 266 

 Chloroamino acids, 297 

 Cholamine (see ethanolamine) 

 Cholic acid, relation to thiamine, 282 

 Choline, 10 



analogues, 290, 704-705 



as source of "formate," 234 



assay methods, 66 et seq. 



biological activity, 706-708 



biosynthesis, 88-89, 234-235, 353 



combined forms, 39 



deficiency, 430-431, 703 



distribution, 18 



effect of amino acids on requirements 

 of, 278 



effect of species size on requirements 

 of, 322 



essential, 278-279 



ethanolamine as precursor, 89 



excretion, 365-370 



extraction, 39 



functions, 430 



inhibitory analogues, 708-710 



in phospholipids, 11, 39 



methyl groups from, 10-11 



pharmacological action, 389-390 



relation to ethanolamine, 89 



requirements, 326, 327, 328, 329 



specificity, 706-708 



structure, 10 



toxicity, 390 

 Choline acetjdase, 237 

 Choline esterase, increase of associated 



with folic acid, 204 

 CI, 404 



Citrovorum factor, 16 ff 

 Claisen-type condensation, 188 



Climate, effect on B vitamin require- 

 ments, 267 

 Cobalt deficiency, anemia in cattle from, 



206 

 Cocarboxylase, 154 

 Codecarboxylase, 177 

 "Codehydrogenase," 133 

 Codehydrogenase I, 133 

 Coefficient of uniformity, 27 

 Coelenterata, nutrition of, 307 

 Coenzyme A, 



assay methods, 192 



biosynthesis, 194 



in acetylation of choline, 237 



occurrence, 193-194 



reactions catalyzed by, 194 et seq. 



structural studies on, 192 

 Coenzyme I, 33, 133, 286, 604 



inhibitions involving, 616-617 

 Coenzyme II, 33, 132, 286 

 Coenzyme of Lipmann, 35 

 Coenzymes, 



analytical methods for, 119 et seq. 



biosynthesis of, 112 



classification of, 109 



from B vitamins, 110-111 



meaning of, 108 



"mobile," 137 



number of, 114 



occurrence of, 120 et seq. 



role of adenylic acid in formation of, 

 114 



separation of, 109 



specificity of, 115, 119 

 Coenzyme synthesis, 343-344, 352-353 



extent of, 113 



rate of, 113 

 Coenzvmatic activity of simple vitamins, 



111 

 Cofactors, 108 

 Coffee, 



toxicity of, 297 



trigonellin in, 288 

 "Coferment," 133 



Coferment of alcoholic fermentation, 133 

 Cold, effect on B vitamin requirements, 



268 

 Colostrum, B vitamins in, 347 

 Combined forms of B vitamins, (See 

 also individual vitamins) 30 et seq. 

 Competitive inhibition, 295, 443 

 "Concentrates" of B vitamins, meaning, 



13 

 Condensations, carbon to carbon bonds, 



187 et seq. 195 

 Conservation of chemical energy, 101 

 Controlled diets, 247 et seq. 

 Cooking, 



effect on B vitamins, 339 



effect on riboflavin, 33 

 "Cophosphorylase" activity, 135 

 Coramine, 287 



