INDEX 



;6i 



Deaminases, amino-acids, aerobic, 



10-17 

 — , — , anaerobic, 22-6 

 — , purines, 136 

 5-Dehydroquinic acid, 73 

 Denitrification, economic import- 

 ance, 43 

 — , effect of oxygen, 42 

 — , organisms, 39 

 — , pathways, 42 



Deoxypentose nucleic acids, in 

 chromatinic bodies, 



133 

 , in transforming factors, 



134 



■ , in viruses, 140 



2-Deoxyribose, 127, 139 

 Desaturases, see Deaminases, an- 

 aerobic 

 Desulphovibrio, nitrogen-fixation, 



50 

 Diamine oxidase, 155 

 a,e-Diaminopimelic acid, decar- 

 boxylase, 29 



, in lysine synthesis, 75 



a,;?-Dihydroxy-iS-ethylbutyricacid, 



76. 

 Dipeptidases, 124 

 Diplococcus glycinophilus, 20 

 Drugs, mode of action, 145 



Energy sources, 4, 17, 20 

 Energy transfer in biological sys- 

 tems, 3 

 Enrichment cultures, 20, 46 

 Enzymes, adaptive, 13 

 ■ — , control of formation by genes, 



^7 . 

 Escherichia coli, amino-acid de- 

 carboxylases, 27 



, aspartase, 23 



, cysteine desulphurase, 



23 



, cytidine deaminase, 136 



, cytosine deaminase, 136 



, deamination of amino-acids, 



II 



, — of histidine, 22 



, dephosphorylation of 



nucleotides, 135 



, glutathione synthesis, 104 



, infection by bacteriophage, 



140 

 , mutants, utilization of 



amino-acids in peptides, 



100 



Escherichia coli, nitratase, 40 



, — , synthesis of, 106 



, purine interconversion, 138 



, purine synthesis, 137 



, serine and threonine de- 

 aminases, 23 



, transamination, 60 



, transforming factors, 134 



, tryptophanase, 15 



Extracellular products, anti- 

 biotics, 96 

 — ■ — , enzymes, 112, 115 



, peptides, 96-7 



• , proteinases, 115 



Fermentation, amino-acids, 20 



— , purines, 136 



— , pyrimidines, 136 



Folic acid factors, structure, 98, 



Folinic acid (citrovorum factor), 



147 

 Formate, in purine synthesis, 137 

 Formylase, 13 

 Formylkynurenine, 13 

 Fusarium lycopersici, 102 

 Fusel oil, 22 



Gelatinase, 116 



Glucose, effect on tryptophanase 

 formation, 15 



D-Glutamic acid in extracellular 

 peptides, 96 



L-Glutamic acid, conversion to 

 ornithine, 71 



, — to proline, 70 



, dehydrogenase, 12, 54, 60, 



64 



, in folic acid factors, 98 



, in histidine catabolism, 22 



, in nitrogen-fixation, 53 



, in strepogenin, 102 



, in transamination, 61 



, racemase, 95 



, uptake by cocci, 86 



Glutamine, in citrulline synthesis, 

 70 



— , initiation of growth, 96^ 98 



— , synthesis, 104 



Glutathione, activation of deami- 

 nases, 24 



— , glyoxalase, 99 



— , occurrence, 99 



— , reductase, 99 



— , structure, 99 



— , synthesis, 104 



