SUBJECT INDEX 
In preparing this index it was decided that the citation of every occurrence of an amino acid in the 
text was an impractical objective which, in any case, would have had dubious value, since many 
amino acids are found in almost every tissue examined. Therefore, amino acids are cited only when 
they have unusual structures oy distributions, or ave singled out for special attention in the text. 
On the other hand, an effort was made to record all textual citations of organisms and tissues in which 
amino acid composition or metabolism are discussed. 
Acacia millefolia, S-(2-carboxy-t-methylethyl)- 
L-cysteine in seeds, 43, 44 
— willavdiana,  S-(2-carboxy-1-methylethyl)- 
L-cysteine in, 43, 44 
Acanthoscelides sp., amino acids, 123 
Acanthrophrynus coronatus, amino acids, 180,182 
Accumulation, amino acid, adaptive increase, 
578 
—, —, in bacteria, 79, 80 
—, —, Candida utilis, 638 
—, —, carrier model, 603—608 
—, —, effect temperature, 599 
—, —, Ehrlich ascites tumor cell, 531 
—, —, energy-dependence, 596, 598-601, 604, 
605, 610 
, —, in Escherichia, coli and yeast, 766 
—, —, experimental method, 567, 568 
—, —, formation, catalysts, 599, 602, 603 
—, —, HeLa cells, 696, 697, 699 
—, —, mechanism, 766-769 
—, —, model, 614 
—, —, osmotic activity, 763 
—, —, permease model, 599-602, 608 
—, —, stoichiometric site model, 603 
—, —, structural specification, 598, 599 
—, —, theoretical models, 598, 608 
—, —, variability in Lactobacillus avabinosus, 
771 
—, a-aminoisobutyric acid in bacteria, 612, 613 
—, glutamine in carrot explants, 681 
—, proline in Escherichia coli, 595-598, 601 
—, role of binding, 577-579 
—, uracil, in Escherichia coli, 775, 776 
Acetate, metabolism in Lactobacillus avabino- 
SUS, 585-587 
N-Acetylaspartic acid, in brain, 295, 466, 468, 
472, 475, 479 
Acetylaspartic acid, in rat brain, 511 
N-Acetylglucosamine, occurrence in Bombyx 
mort, 126 
O-Acetylhomoserine, occurrence in pea, 35, 36 
6-O-Acetylthiogalactoside in Escherichia coli, 
613 
N-Acetyltyramine, in Bombyx mori, 171 
ACTH, effect on aromatic keto acid excretion, 
270 
—, — taurine excretion, 464 
—, — urine amino acids, 275 
Actias selene, amino acids, 116 
Actinomyces phaeochromogens, 80, 81 
— violaceus, amino acids, 80 
Activating enzymes, relation to amino acid 
transport, 590 

Active transport (see Transport) 
—, of amino acids, in tumor cells, 387 
Activity coefficient, changes.in, 767, 768 
Acylamino acid, formation, 760, 761 
Acylase I, distribution, 761 
—, use in resolving amino acids, 13-15, 19 
Adiantum, growing apex, y-hydroxy-y-methy]- 
glutamic acid in, 668 
— pedatum, amino acids, 34 
Adrenal hormones, effect on glomerular fil- 
tration, 22 
Adrenalectomy, amino acids in plasma, 451 
—, — in rat tissues, 345, 346 
—, glutamine in plasma, 451 
Adsorption, amino acids to cell 
HIS ; 
—,— protem 509 
—, a-aminoisobutyric acid in cell wall, 612 
—, intracellular, of amino acids, 763, 764, 766, 
769-771 
Aedes aegypti, amino acids, 118, 119, 123, 125, 
126 
—, egg production, 130, 131 
—, essential amino acids, 127, 128 
Aedes sollicitans, amino acids, 118 
— varipalpus, amino acids, 118, 123 
Aerobactey sp., amino acids, 79 
Agaricus bisporus, b-N-(y-L-glutamyl-4- 
hydroxymethylphenylhydrazine), 44, 57 
— hortensis, N-(y-L-glutamy]l)-4- 
hydroxyaniline, 57 
—, N*®-p-hydroxyphenyl-L-glutamine, 44 
Age, amino acids, in brain, 479, 488 
—, — excretion in human, 231 
—, — in human plasma, 235, 236 
—, — pool composition, 298—306 
—, — in urine, 271-274 
—, blood amino acids, children, 266 
—, — transaminase, children, 266 
—, brain acetylaspartic acid, 475 
—, — y-aminobutyric acid, 474 
—, — aspartic acid, 475 
—, leucine transport, mouse, 558 
—, liver enzyme activity, 270 
—, urine amino acid content, 263 
Agyvobacterium tumefaciens, amino acids, 79 
Agrotis ypsilon, amino acids, 116 
Alanine, accumulation by microorganisms, 509 
57° 
—, in brain, 475-476 
—, —, effect dieldrin, 516 
—, effect pantothenic acid deficiency, 462—464 
—, excretion effect pregnancy, 462, 463 
fractions, 
