... of amino acids 77 Conversion of phosphohomoserine to threonine 77 Sulfur transfer between homocysteine and cysteine 77 ... 80 per- cent; L-histidine, 60 percent; L-threonine, 100 percent. With these ratios as the basis, ...

... alloisoleu- cine, hydroxypropoline-allohydroxyproline, and 556044—60—3 threonine-allothreonine by chromatography on Amberlite columns in amounts ... and VII. The Metabolism of Amino Acids (a) Threonine Biosynthesis (Dr. M. Flavin and Mr. C. Slaughter). ...

... enzyme activity of ALA synthetase, aminoacetone synthetase, and threonine dehydrogenase. A quantitative method for the measurement of ... it is inhibited by alanine, ser- ine and threonine but not by other amino acids ; 74 ANNUAL ...

... 7). 5'SH guanine cytosine T7 18 ~ + 1C threonine 1• Tyrosa,e nudeotide at end ofdeal,edstrand ... in an electronic unit. Phosphorylations on serine or threonine units, too, can regulate protein functions, but, for ...

... Arg) 4 Serine (Ser) 15 Amide NH; (17) Threonine (Thr) 10 | Half-cystine (Cys) 8 Total number ... show that sheep ribonucle- ase contains less lysine, threonine (and perhaps less aspartic acid), and more serine ...

... utilization of the isomers of isoleucinse, valine and threonine are not yet complsted.® 8-21: Progress report # ... that the unnatural isomers of cystine, tyrosine, and threonine are utilized poorly or not at all by ...

... were noted. The results demonstrate that valine, methionine, threonine, leucine, isoleucine, phenylalanine, tryptophane, and - lysine are necessary ... at least four amino OFEN OPEN i acids, threonine, valine, methionine, and isoleucine, must be . supplied as ...

... Sl Sl 0 .49 sy 24,6 25 Threonine 530 4.2 058 42,0 29 . % 29 ... 11.4 9.5 .02 108,5 169 Threonine B4 e 0,99 5 110 Tyrosine 6, ... in the flagks conteine ing dl methionire, dl threonine e dl norleucine uotll he 12th dey. There- ...

... and peptides were investi- gated: glycine, alanine, serine, threonine, glutamic acid, lysine, arginine, histidine, /3-alanine, phenyl- ... reaction shows that its lysine, histidine, methionine, and threonine become unavailable for rats.20k Addition of arginine, ...

... These subunits contain aminoterminal aspartic acid and carboxyterminal threonine. In the amino acid analyzer their composition is ... lipoproteins and particles usually reveal some aminoterminal residues (threonine and serine) dif fering from those in the ...