THE TRYPTOPHAN SYNTHETASE SYSTEM 1
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چکیده
منابع مشابه
Tryptophan Synthetase ,& Subunit
Radioactivity incorporated into an e-N-5’-phosphopyridoxyllysine residue of the /3 chain by reduction of the flZ holoenzyme with tritiated sodium borohydride appears in two tryptic peptides. These pyridoxyl peptides differ by only a single arginyl residue. As expected, tryptic digests of normal protein contain two peptides that together make up the pyridoxyl peptide region. The primary structur...
متن کاملTryptophan Synthetase Activity in Pea Seedling Extracts.
Extracts of several microorganisms have been shown to possess tryptophan synthetase activity (2, 5, 6, 8, 9), i.e., such preparations, when incubated in buffer in the presence of indole, serine, and pyridoxal phosphate, catalyze a condensation of indole and serine with the concomitant production of an equivalent amount of tryptophan. Animals, which have a dietary requirement for tryptophan, app...
متن کاملGene Interaction in Tryptophan Synthetase Formation.
N a previous study (YANOPSKY 1952) of two biochemically similar tryptophanI requiring mutants of Neurospora crassa it was found that each strain differed from the wild type in that it was unable to carry out the tryptophan synthetase reaction (the coupling of indole and serine to form tryptophan). In both mutants the genetic change which resulted in a requirement for exogenous tryptophan seemed...
متن کاملTryptophan synthetase in Euglena gracilis strain G.
The five enzyme activities in the synthesis of l-tryptophan have been obtained in extracts of Euglena gracilis. One of these, tryptophan synthetase, has been studied in detail. The general catalytic properties of tryptophan synthetase, including the range of reactions catalyzed and its substrate and cofactor affinities, are similar to those reported for other organisms. The Euglena enzyme has t...
متن کاملTryptophanase-tryptophan synthetase systems in Escherichia coli. I. Effect of tryptophan and related compounds.
Freundlich, Martin (University of Minnesota, Minneapolis) and Herman C. Lichstein. Tryptophanase-tryptophan synthetase systems in Escherichia coli. I. Effect of tryptophan and related compounds. J. Bacteriol. 84:979-987. 1962.-The effect of tryptophan and related compounds on tryptophanase and tryptophan synthetase formation in Escherichia coli was determined. Several of these compounds stimula...
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ژورنال
عنوان ژورنال: Bacteriological Reviews
سال: 1960
ISSN: 0005-3678
DOI: 10.1128/mmbr.24.2.221-245.1960