802 
N-Palmitoylphenylalanine, inhibition of syn- 
thesis, 746 
Pancreas, chicken, serine ethanolamine phos- 
phodiester, 190 
Pantothenic acid deficiency, effect on amino 
acid, accumulation, 587 
—, — im urine, 275, 461-464 
Panulivus interruptus, 181, 182 
Papilio machaon, amino acids, 116 
Paramecium auyrelia, amino acids, 110 
— caudatum, amino acids, IIo 
— multimicronucleatum, amino acids, 110 
Parasitic worms, ad-amino nitrogen, 162 
Parotid gland, secretion, amino acids, 203 
Parthenocissus quingquifolia, amino acids, 66 
— tyicuspidata, amino acids, 43, 66 
Patella sp., amino acids, 164 
Pea (see Pisum sativum L) 
Pea hypocotyls, phosphoserine synthesis, 677 
— seedling, synthesis of ATPase, 687, 688 
— seeds, pool changes during germination, 659 
Pelecypods, amino acids, 172 
—, taurine, 165 
Penaeus aztecus, amino acids, 162 
—, taurine, 166 
Penicillin, effect on amino acid accumulation, 
576 
—, effect on pool in bacteria, 99 
— formation, relation to amino acid pool, 85, 86 
Penicillium chrysogenum, age, effect on pool, 95 
—, amino acids, 84, 86, 87 
—, aminoadipic acid, go 
—, — peptide, 89, 90 
—, phospholipid—amino acids, 748, 752 
Pentane myleran, effect on amino acids in 
blood fractions, 415 
—, treatment of leukemia, 413, 414 
Peptidases, occurrence in Dociostaurus maroc- 
canus eggs, 125 
Peptides, absence in cell extracts, 292 
—, activation, 72, 734 
—, antibiotic, 90 
— bond formation, energetics of, 758 
—, in brain, 479, 480, 487, 488, 490, 491 
—, in cell wall biosynthesis, 90 
—, composition from Drosophila, 143-145 
—, in Drosophila melanogaster, 136-145 
—, entry of label into protein, 732, 733, 738 
—, extraction from Drosophila, 136-140 
—, in human urine, 226 
—, hydrolysis, 740 
—, in insects, I17—119, 124 
—, in lipid complex, 757 
—, metabolism, 147-154 
—, In microorganisms, 88-91, 572 
—, In microsomes, 739 
—, ninhydrin color yield, 140 
—, in plants, 54-63 
—, role in protein synthesis, 145, 151, 156, 680, 
732-739, 738, 739 
—, separation from amino acids, 142 
—, size of pool, in Drosophila melanogaster, 140 
—, — in mammalian cells, 157 
—, in yeast ribosomes, 156 
SUBJECT INDEX 
Peptidylphosphatide, formation in rat liver, 
UE 
Perfusion, liver, effect on plasma amino acids, 
713-721 
— apparatus, liver, 708, 709 
Periplaneta americana, amino acids, 120, 123 
—, D-amino acid oxidase, 132 
—, iodine metabolism, 131 
Permeability barrier, role 
accumulation, 577-581 
—, brain to amino acids, 545, 554, 555 
—, — to y-aminobutyric acid, 493 
— —, effect orphenadrine, 497 
—, cells to protein, 739, 740 
—, effect boron deficiency, 665 
—, — nitrogen mustard, 411 
—, — somatropic hormone, 267 
—, erythrocyte, effect saline, 510, 511 
—, — to amino acids, 386, 529, 530 
—, — toglutamine, 359-361, 432, 433, 436, 510, 
511 
—, — to leucine, 510 
—, leukocytes to glutamine, 359, 360, 387 
—, liver nuclei to protein, 770 
—, of lysosome, effect vitamin A, 707 
—, of placenta to protein, 264 
—, platelets to glutamine, 387, 445, 446 
—, role of lipid—amino acid, 757 
—, role of solubility, 767 
—, Streptococcus faecalis, effect K+, Nat, 772, 
HIS 
—, —, protoplasts to sucrose and amino acids, 
764, 765 
—, tumor cells to a-y-diaminobutyric acid, 
322, 324, 325 
= to glutamic acid, 322 
—, — to glutamine, 319-322 
Permease, amino acid, role in protein synthesis, 
622, 625, 630 
— model, 575, 590, 613, 614 
Perspiration, human, amino acids, 278 
PH, effect on amino acid transport, 542 
Phaleva bucephala, pool changes in develop- 
ment, 125 
Phaseolus limensis, y-glutamylleucine, 55 
— —, y-L-glutamyl-S-methyl-L-cysteine, 54 
— vulgaris, amino acids, 29 
— —, y-glutamylmethionine, 56 
— —, y-L-glutamyl-S-methyl-L-cysteine, 54 
Phenelzine, effect on amino acids in brain, 489, 
490 
Phenobarbital, effect on amino acids in brain, 
494, 495 
p-Phenolacetic 
ketonuria, 255 
p-Phenollactic excretion in phenylketonuria, 
255 
p-Phenolpyruvic acid, excretion in myasthenia 
gravis, 255 
Phenylacetic acid, excretion in phenylketo- 
nuria, 212, 255 
—acetylglutamine, excretion in phenyl- 
ketonuria, 212, 255 
— —, in human urine, 200, 226 
in amino acid 

acid, excretion in phenyl- 
