INDEX 



397 



degradation 220, 221 

 desmolase, see Indole-ligase 



Tuberculin 92 



Tubifex 300 



Tyramine 210 



Tyrocidines 80 



Tyrosine 28, 96, 101, 209, 219, 223, 

 229, 248, 249 

 degradation 219, 224 



L-Tyrosine 210 



UDP. See Uridine diphosphate 

 UDPG. See Uridine diphosphate glu- 

 cose 

 UMP. See Uridine monophosphate 

 Uracil 52, 68, 107, 255 

 Urea 52, 77, 158, 166, 182, 329, 368 

 Urease 152, 158, 167, 367 

 Urechis 300, 319, 322, 336 

 Ureidosuccinic acid, see Carbamylas- 



partic acid 

 Uric acid 342 

 Uricolysis 341, 342 

 Uricolytic enzyme system 342 

 Uridine 68, 241, 255 



diphosphate (UDP) 68, 161, 311 



diphosphate glucose (UDPG) 68, 

 69, 161, 191 



diphosphateglucuronate (UDP-glu- 

 curonate) 310 



monophosphate (UMP) 68, 257 



phosphates 67 



triphosphate (UTP) 64, 68, 161 

 Urocanic acid 216, 224, 366 

 UTP. See Uridinetriphosphate 



Valency, degradation 216 

 heteropolar 275 

 homopolar 276 



Valine 28, 79, 217, 222, 246, 247, 269 



degradation 216, 217, 224 

 Van der Waal forces 275 

 Vasopressin 80, 81, 82 

 Vertebrates 290, 292, 294, 296, 297, 



298,321,327,337,338,339,344 

 Violaxanthin 35, 37 

 Vision 290 

 Vitamin A, Aj, A^ 290 

 Vitamin B. 60 

 Vitamin Bj,, see also Cyanocobalamin 



46, 63 



Water 5 



Waxes 6 1 



Work, and energy 131, 132, 133 



cellular 146 

 Worms 293 



X-ray diffraction, fibrous protein 95 

 Xanthine 53 



oxidase 72, 162 



— 'Oj-transhydrogenase 162, 163 

 Xanthophyll 34, 37, 121 

 Xanthophyllepoxide 35 

 Xanthophylls 290, 325 

 Xanthosine monophosphate 256 

 Xanthurenic acid 220 

 Xylans 90 

 Xylulose 17, 193 



Yeast 186, 188 

 Yellow enzyme 69, 164 



Zeaxanthin 34, 37 

 Zona fasciculata 315 



