SUBJECT INDEX
567
electron acceptors and, 349^350
function of, 388
heterotrophic bacteria and, 386-388
hydrogen carriers and, 394-395
lactate utilization and, 366
mechanism of, 393-394
nitrogen fixation and, 395-397
photosynthetic bacteria and, 375,
384-386
properties of, 388-391
prosthetic group of, 392-393
purification of, 391-392
Hydrogen bonding, thermophils and,
504-505
Hydrogenlyase, energy and, 359
Hydrogenomonas,
carboxydismutase and, 361
characteristics of, 382-383
energy efficiency of, 353, 354
free energy and, 351
hydrogenase of, 350, 395
organic compounds and, 366
substrate of, 349
Hydrogenomonas agilis, nitrate and, 383
Hydrogenomonas carhoxyvorans, characteristics of, 402
Hydrogenomonas eurotropha, hydrogenase and, 394
Hydrogenomonas facilis,
carbon dioxide and, 362-363
energy efficiency of, 355
hydrogenase and, 391
lactate and, 366
nitrate and, 383
Hydrogenomonas flava, 382
lactate utilization and, 366
Hydrogenomonas pantotropha, 382
Hydrogenomonas ruhlandii, hydrogenase
and, 394
Hydrogenomonas vitrea, 382
Hydrogen peroxide,
fatty acids and, 91
flavoprotein and, 476
indoleacetate and, 296
Hydroids, light and, 243-244
Hydronium ion, 219
formation of, 218
Hydrostatic pressure, equilibria and, 38
Hydroxide, sulfonium compounds and,
184
Hydroxyacids,
activation of, 78
isomerization of, 88
oxidation of, 100
thioesters,
oxidative phosphorylation and, 467
pyridine nucleotides and, 442
/?-Hydroxyacyl dehydrogenase, 95
2-Hydroxyadenine, methylation of, 228
/?-Hydroxybutyrate,
acetone and, 100-101
mitochondrial fragments and, 453,
454
oxidation of, 41-42, 463, 465-467
phosphorylation and, 460, 461, 462
ß-Hydroxybutyryl dehydrogenase, 87,
192
specificity of, 88
β-Hydroxybutyrobetaine, see Carnitine
Hydroxylamine,
acetate activation and, 78
acetyl phosphate and, 136
acyl thioesters and, 156
amino acid activation and, 142
ammonia oxidation and, 368-370
fatty acid oxidation and, 98
hydrogenase and, 395
phototaxis and, 274
reduction of, 370
β-Hydroxypropionate, propionate and,
93
ß-Hydroxypropionyl coenzyme A, formation of, 85
5-Hydroxytryptamine, carbohydrate
metabolism and, 423
Hygric acid, stachydrine and, 202
Hymeniactdon caruncula, phosphagens
and, 154
Hypaphorine, 189, 190
biosynthesis of, 191
occurrence of, 182
Hyponitrous acid, ammonia oxidation
and, 369
Hypophosphite, 162
Hypoxanthine,
sulfite reductase and, 379
sulfite oxidase and, 381-382
567
electron acceptors and, 349^350
function of, 388
heterotrophic bacteria and, 386-388
hydrogen carriers and, 394-395
lactate utilization and, 366
mechanism of, 393-394
nitrogen fixation and, 395-397
photosynthetic bacteria and, 375,
384-386
properties of, 388-391
prosthetic group of, 392-393
purification of, 391-392
Hydrogen bonding, thermophils and,
504-505
Hydrogenlyase, energy and, 359
Hydrogenomonas,
carboxydismutase and, 361
characteristics of, 382-383
energy efficiency of, 353, 354
free energy and, 351
hydrogenase of, 350, 395
organic compounds and, 366
substrate of, 349
Hydrogenomonas agilis, nitrate and, 383
Hydrogenomonas carhoxyvorans, characteristics of, 402
Hydrogenomonas eurotropha, hydrogenase and, 394
Hydrogenomonas facilis,
carbon dioxide and, 362-363
energy efficiency of, 355
hydrogenase and, 391
lactate and, 366
nitrate and, 383
Hydrogenomonas flava, 382
lactate utilization and, 366
Hydrogenomonas pantotropha, 382
Hydrogenomonas ruhlandii, hydrogenase
and, 394
Hydrogenomonas vitrea, 382
Hydrogen peroxide,
fatty acids and, 91
flavoprotein and, 476
indoleacetate and, 296
Hydroids, light and, 243-244
Hydronium ion, 219
formation of, 218
Hydrostatic pressure, equilibria and, 38
Hydroxide, sulfonium compounds and,
184
Hydroxyacids,
activation of, 78
isomerization of, 88
oxidation of, 100
thioesters,
oxidative phosphorylation and, 467
pyridine nucleotides and, 442
/?-Hydroxyacyl dehydrogenase, 95
2-Hydroxyadenine, methylation of, 228
/?-Hydroxybutyrate,
acetone and, 100-101
mitochondrial fragments and, 453,
454
oxidation of, 41-42, 463, 465-467
phosphorylation and, 460, 461, 462
ß-Hydroxybutyryl dehydrogenase, 87,
192
specificity of, 88
β-Hydroxybutyrobetaine, see Carnitine
Hydroxylamine,
acetate activation and, 78
acetyl phosphate and, 136
acyl thioesters and, 156
amino acid activation and, 142
ammonia oxidation and, 368-370
fatty acid oxidation and, 98
hydrogenase and, 395
phototaxis and, 274
reduction of, 370
β-Hydroxypropionate, propionate and,
93
ß-Hydroxypropionyl coenzyme A, formation of, 85
5-Hydroxytryptamine, carbohydrate
metabolism and, 423
Hygric acid, stachydrine and, 202
Hymeniactdon caruncula, phosphagens
and, 154
Hypaphorine, 189, 190
biosynthesis of, 191
occurrence of, 182
Hyponitrous acid, ammonia oxidation
and, 369
Hypophosphite, 162
Hypoxanthine,
sulfite reductase and, 379
sulfite oxidase and, 381-382