8o4 
Potato tuber, amino acids, 26 
—, relation protein synthesis and respiration, 
679 
Pregnancy, effect on amino acids in plasma, 237 
—, — excretion of amino acids, 229, 237, 462— 
404 
Preloading, effect on amino acid, exchange, 555 
—, —, uptake, 536-538, 539, 540, 768, 769 
—, —, —, Mammalian cells, 697, 698 
—, effect on influx rate, 539, 540 
Procycline, effect on amino acids in brain, 494, 
496 
Proline, accumulation, in bacteria, 80 
—, — by Escherichia colt, 568-572, 575, 595— 
598, 601 
by microorganisms, 569-571 
—, conversion to amino acids in tobacco leaf, 
670 
—, detection on paper chromatograms, 9 
—, excretion of, effect age, 272 
—, —, by human newborn, 201 
—, —, in vitamin C deficiency, 258 
—, human blood plasma, 234 
—, incorporation into protein in carrot, 676 
—, leakage from Sarcina lutea, 99 
— metabolism, effect hght, 669 
—, reabsorption, 240, 241 
—, transport mutant, 610, O11 
S-n-Propyl-t-sulphoxide, in Allium cepa, 43, 44 
Propionate, permeability of Stveptococcus 
faecalis protoplast, 773 
Prostate, rat, effect castration on amino acids, 
327, 
Protein, amino acid binding, 772 
— binding, of amino acids, 241 
— composition, relative to blood amino acids, 
196 
—  —, variation during seed germination, 658 
— deficiency, effect on amino acid excretion, 
249, 250 
— —, effect on organs, 249, 250 
— degradation, amino acid pool replenishment, 
647 
— —, energy-dependence, 651 
— —., liver, 713 
— —, mechanism, 652 
— —, during seed germination, 657 
—, extracellular, effect on amino acid pool, 706 
— ingestion, effect on blood amino acids, 268, 
269 
—  —, — plasma amino acids, 238 
— —, — urine amino acids, 274 
— metabolism, during embryogenesis, 124 
—, soluble, in insects, 128, 129 
—, synthesis, amino acid pool, 702, 703 
— —, cell-free, plants, 677 
— —, control by amino acid pool, 691 
— —, efficiency factor, 624 
— —, errors, 739 
— —, inhibition, effect on pool, 97 
— —, in lethal mutants of Drosophila, 129-130 
——, mechanism, 686-689, 735 
model, 618-621, 735 
molecular generation time, 741 
, 

, 
SUBJECT 
INDEX 
Protein, synthesis, (continuation) 
— —, origin of amino acids, 634-636, 644 
— —, in plant leaf, 690, 691 
— —, relation of amino acid pool, 642-645, 
674-679, 689, 732-736 
— —, — ion uptake, 682, 683 
— —, role of free amino acids, 350 
— —, — glutamine, 689 
— —, — internal pool, 656 
; lipid—amino acid, 747, 748, 751, 752, 
757, 758 
— —, — peptides, 145, 151, 156, 732-736, 738, 
739 
— —, tobacco leaf, 662 
— —, Torulopsis utilis, 688 
— —, transport mutant, 611 
— —, unequal labeling, 687, 740, 741 
— turnover, 706, 707, 733 
— —, during active growth, 684, 685 
— —, carrot explant, stimulation by coconut 
mild, 682 
— —, definition, 679 
— —, effect of age, 267 
— —, — nutritional status, 649 
— —, — surgery on, 267 
— —, energy-dependence, 651 
— —, heterogeneity, 682 
— —, — of cell components, 649 
— —, initiation, 649, 650 
— —, in mammalian cells, 704, 705 
— -—, mechanisms, 646, 647, 652, 705 
—  —, in microorganisms, 646-6053 
— —, in rapidly growing cells, 648, 649 
— —, rates, 683 
—, —, — in microorganisms, 648, 649 
— —, regulation, 651 
— —, relation to amino acid pool, 679-684 
— —, — respiration, 679 
— —, role in cell enzyme composition, 652, 653 
— —, in slime mold, 683 
—, unequal labeling, 734 
Proteolysis, in rat tissues, 293-298 
—, relation to pool composition, 159 
—, — protein synthesis, 627—629 
Proteolytic enzymes, control, 707 
—, in Dociostaurus maroccanus eggs, 125 
—, in lethal mutants of Drosophila, 130 
—, variation in yeast, 653, 655 
Protoplast, Escherichia coli, conversion to, 766 
—, — membrane, 768 


—, lipid—amino acid in membrane, 748, 752 
—, permeability, 579-581 
—, Streptococcus faecalis, amino acid uptake 
and swelling, 764, 765 
—, —, permeability, 772, 773 
—, swelling, 579-581, 613, 615 
—, — during amino acid uptake, 102 
—, uptake of a-aminoisobutyric acid, 613 
Protozoa, amino acids, 1log—114 
Proximal convoluted tubule, defect in, 254 
Pseudemys elegans, serine ethanolamine phos- 
phodiester, 187 
Pseudomonas aeruginosa, 
acids, 92 
leakage of amino 
