SUBJECT INDEX 



519 



Penatin, 220 



Penicillic acid, 180, 477 



Penicillin, 15, 184-187, 308, 411 



Penicillin amidase, 187 



Penicillinase, 187 



Penicillin B, 220 



Penicilloic acids, 187 



Pentaacetylglucose, 64 



Pentonic acids, 222 



Pentosans, 42, 43, 77, 113-114 



Pentose phosphates, 217-218 



Pentoses, metabolism of, 143, 208, 221- 



222 

 Peptidases, 265, 479 



see also Endopeptidases, Exopepti- 

 dases 

 Peptides, 250-251, 255-256, 479 

 Periodicity, 362 



Permeability, 206-207, 397, 442-443, 449, 

 453-454, 458-460, 470 



to acids, 80 



to cations, 391 



to metals, 468 



to vitamins, 326, 340 

 Peroxidases, 232 

 Peroxides, 433, 443 

 Persulfate, 305 



pH, effect of ammonium utilization on, 

 247-248 



effect of organic acid utilization on, 



80, 248 



effect of on growth, 14-15, 19-23, 56 

 effect of on metabolism, 19, 141, 150, 



178, 208, 337 

 effect of on mineral nutrition, 307, 



312, 316 

 effect of on permeability, 80, 326 

 effect of on reproduction, 363, 366 

 effect of on spore germination, 403- 



404, 409 

 effect of on substrate utilization, 79, 



81, 244, 246 



effect of on toxicity, 454-457, 468 



effect of on vitamin requirements, 

 335, 337, 340 



effect of on zonation, 359 



internal, 22-23 

 Phallin, 255 

 Phalloidine, 255 

 Phenanthraquinones, 477 



o-Phenanthroline, 479, 480 

 Phenazine derivatives, 205 

 Phenol, 83, 441 

 Phenols, oxidation of, 174-176 



toxicity of, 449, 453, 455, 457, 463, 464 

 Phenolsulfatase, 306 

 Phenothiazone, 472 

 Phenylacetic acid, 173-174, 186, 208 

 Phenylalanine, 171, 257-259, 271-272 

 Phenylethylamine, 186, 273 

 a-Phenylglycine, 271 

 Phenylmercuric acetate, 467 

 Phenylpyruvic acid, 271-272 

 Phomazarin, 283 



Phosphatases, 105, 123, 275, 302-303 

 Phosphate, 22, 249, 301-304 

 Phosphatides, 46, 47, 153 

 Phosphite, 301 

 Phosphoenolpyruvic transphosphorylase, 



213 

 Phosphofructokinase, 213 

 Phosphogluconate oxidation pathway, 



179, 217-220, 221-222 

 6-Phosphogluconic acid, 217 

 Phosphoglyceric acids, 213, 372 

 Phosphoglyceryl kinase, 213 

 Phosphoglyceryl mutase, 213 

 Phosphohexoisomerase, 213 

 Phospholipases, 153 

 Phospholipids, 152, 339 



see also Phosphatides 

 Phosphomonoesterases, 123 

 Phosphoproteins, 38, 44 

 Phosphorus, 8, 139, 149, 301-304, 469 



bioassay for, 313, 314 



of cells, 37, 38, 376 

 Phosphorylases, 121 

 Phosphorylation, oxidative, 213, 462 

 Photoreactivation, 433 

 Phototaxis, 360 



Phototropism, 358, 360-362, 392 

 Phthalic acid, 22 



Phycomycetes, physiological characteris- 

 tics of, 78, 90, 215, 304-305, 347, 366 

 Phytic acid, 301, 302 

 Phytin, 339-340 

 Phytoene, 159, 161 

 Phytofluene, 159, 161 

 Picroroccelin, 280 

 Pimelic acid, 334 



