Tryptophan is the one of the least abundant yet, in terms of energy, one of the most
expensive to produce of the standard protein amino acids (Hrazdina and Jensen, 1992). The …

The cruciferous plant Arabidopsis thaliana has two closely related, nonallelic tryptophan
synthase beta genes (TSB1 and TSB2), each containing four introns and a chloroplast …

The DNA sequence of a tryptophan synthase gene and the flanking 5'and 3'regions has
been determined for Arabidopsis thaliana. The sequence encodes only the beta subunit …

The first step of tryptophan biosynthesis is catalyzed by anthranilate synthase (AS), which is
normally subject to feedback inhibition by tryptophan. Three independent trp5 mutants …

Tryptophan synthase (EC 4.2. 1.20) from bacteria, yeasts, molds, and plants catalyzes the
final two reactions in the biosynthesis of L-tryptophan. This enzyme has been the subject of …

Following the identification of the enzymes and reactions of tryptophan synthesis in fungi
and bacteria about 20 years ago, this pathway (Figure 1) and its regulation have been …

Publisher Summary Tryptophan synthetase (L-serine hydrolyase) is a multimeric enzyme
catalyzing the terminal reaction in the biosynthesis of L-tryptophan by microbes arid plants …

Abstract orange pericarp (orp) is a seedling lethal mutant of maize caused by mutations in
the duplicate unlinked recessive loci orp1 and orp2. Mutant seedlings accumulate two …

Tryptophan synthase: structure, function, and subunit interaction Page 131 TRYPTOPHAN
SYNTHASE: STRUCTURE, FUNCTION, AND SUBUNIT INTERACTION By EDITH WILSON …

Our studies, which are aimed at understanding the catalytic mechanism of the α subunit of
tryptophan synthase from Salmonella typhimurium, use site-directed mutagenesis to explore …