1002 



SUBJECT INDEX 



Nitrate, reduction of, 

 iodoacetate, 148, 154-155 



Nitrate:acetaldehyde oxidoreductase, io- 

 doacetate, 154 



Nitrate:benzylviologen oxidoreductase, 

 iodoacetate, 154 



Nitrate reductase, see also NADH:nitrate 

 oxidoreductase, NADPHmitrate oxido- 

 reductase, and NAD(P)H:nitrate oxi- 

 doreductase, 

 alloxan, 398 

 arsenite, 656 

 iodoacetate, 154 

 tetramethyl-p-phenylenediamine, 59 1 



Nitrate:succinate oxidoreductase, iodo- 

 acetate, 154 



Nitrilase, iV^-ethylmaleimide, 351 



Nitrite, 



antagonism of alloxan, 388-389 

 oxidation of, arsenite, 617 

 vascular effects, iodoacetate, 227 



Nitrite reductase, see also NADHrnitrite 

 oxidoreductase and NADPH:nitrite 

 oxidoreductase, 

 iodoacetate, 154 

 1,4-naphthoquinone, 455 



Nitrobacter, nitrite oxidation, 

 arsenite, 617 



3-Nitro-4-carboxyphenylarsenoxide, 

 ionization constant, 777 

 trypanocidal action, pH effect, 777 



2-Nitro-3-hydroxy- 1 ,4-naphthoquinone, 

 bacterial growth, 549 



3-Nitro-4-hydroxyphenylarsonate, 

 growth of tissue culture, 769 

 lethal doses, 722 



p-Nitrophenylarsonate, growth of tissue 

 culture, 769 



Nitroreductase, iodoacetate, 154 



Nitrosoreductase, iodoacetate, 154 



Nocardia corallina, respiration (endoge- 

 nous), 



arsenite, 678 

 iodoacetate, 112 



Nocardia erythropolis, keto acid accumu- 

 lation, 

 arsenite, 669 



Norepinephrine, antagonism of alloxan, 



388 

 Norvaline decarboxylase, iodoacetate, 151 

 Nuclei, see Thymus nuclei 

 Nucleic acids, see also Deoxyribonucleate, 

 biosynthesis of, 

 arsenite, 697 

 iV-ethylmaleimidie, 357 

 iodoacetate, 253 

 maleurate, 326 

 menadione, 494 

 metabolism of, alloxan, 404 

 Nuclein, reaction with quinones, 443 

 Nucleotidase, 

 arsenite, 656 

 iodoacetate, 52 

 Nucleotide pyrophosphorj'lase, iodoace- 

 tate, 52 



Oats, see Avena sativum 

 Ochromonas malhamensis, 



pyruvate accumulation, arsenite, 670; 



673 



respiratory quotient, arsenite, 676 

 Octopus, hydroquinone, 575 

 Odontosyllis phosphorea, luciferase of, 



menadione, 497 

 Old yellow enzyme, see NADPH diapho- 



rase 

 Onion, respiration (endogenous), 



maleic hydrazide, 332 

 Onion roots, mitosis in, 



maleurate, 325 



quinones, 537-538 

 Onion seedlings, growth of, 



arsenite, 769 

 Opsanus tau, see Toadfish 

 Optic nerve, arsenical toxicity, 716 

 Ornithine carbamyltransferase 



arsenite, 635 



iV-ethylmaleimide, 351 



iodoacetate, 56 



SH reagent comparison, 809-810 

 Ornithine peptidase, iodoacetate, 42 

 Ouabain, cardiac efects of, 



iodoacetate, 223-224 



