Abstract The Drosophila Prat gene encodes phosphoribosylamidotransferase (PRAT), the
enzyme that performs the first committed step of the de novo purine nucleotide biosynthesis …

In Salmonella typhimurium, the first five steps in purine biosynthesis also serve as the first
steps in the biosynthesis of the pyrimidine moiety of thiamine (vitamin B1). Strains with null …

Glutamine phosphoribosylpyrophosphate amidotransferase, the key regulatory enzyme for
de novo purine nucleotide synthesis, is subject to feedback regulation by adenine and …

Soybean (Glycine max) and mothbean (Vigna aconitifolia) cDNA clones encoding glutamine
phosphoribosylpyrophosphate amidotransferase (PRAT), the first enzyme of the de novo …

Most of the nitrogen transported from the nodules of nitrogen-fixing soybean plants is in the
form of the ureides allantoin and allantoic acid. Recent work has shown that ureides are …

The glutamine-and N-acetyl-L-glutamate-dependent carbamoyl phosphate synthetase III
present in liver of largemouth bass (Micropterus salmoides) has been highly purified. The …

Mutations were constructed in vitro which identify the-35 promoter element and the operator
site of the Escherichia coli purF operon as well as confirm the-10 promoter sequence. The …

Single tryptophan residues were incorporated into each of three peptide segments that play
key roles in the structural transition of ligand-free, inactive glutamine …

Cryptococcus neoformans is a fungus that causes life-threatening systemic mycoses. During
infection of the human host, this pathogen experiences a major change in the availability of …

Joseph Y. Wong, David A. Bernlohr, Charles L. Turnbough,* and Robert L. Switzer* abstract:
A procedure for the rapid and efficientpurification of glutamine …