From the cell-free extract of fodder yeast Candida tropicalis NADP-specific glutamate dehydrogenase was isolated and partially purified (75-fold) by means of fractional precipitation by ammonium sulphate and ion-exchange chromatography on DEAE-cellulose. The preparation was investigated with the aid of polyacrylamide gel electrophoresis. Kinetic characteristics of the enzyme in the cell-free extract and partially purified preparation were derived.
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Int J Mol Sci
September 2024
School of Life Sciences and Medicine, Shandong University of Technology, Zibo 255049, China.
Front Plant Sci
June 2020
Center for Biocrystallographic Research Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznań, Poland.
Glutamate dehydrogenase (GDH) releases ammonia in a reversible NAD(P)-dependent oxidative deamination of glutamate that yields 2-oxoglutarate (2OG). In current perception, GDH contributes to Glu homeostasis and plays a significant role at the junction of carbon and nitrogen assimilation pathways. GDHs are members of a superfamily of ELFV (Glu/Leu/Phe/Val) amino acid dehydrogenases and are subdivided into three subclasses, based on coenzyme specificity: NAD-specific, NAD/NADP dual-specific, and NADP-specific.
View Article and Find Full Text PDFPLoS Negl Trop Dis
April 2020
Department of Medicine, University of California, San Diego, La Jolla, California, United States of America.
Giardiasis and other protozoan infections are major worldwide causes of morbidity and mortality, yet development of new antimicrobial agents with improved efficacy and ability to override increasingly common drug resistance remains a major challenge. Antimicrobial drug development typically proceeds by broad functional screens of large chemical libraries or hypothesis-driven exploration of single microbial targets, but both strategies have challenges that have limited the introduction of new antimicrobials. Here, we describe an alternative drug development strategy that identifies a sufficient but manageable number of promising targets, while reducing the risk of pursuing targets of unproven value.
View Article and Find Full Text PDFInt Arch Allergy Immunol
May 2018
Department of Microbiology and Medical Zoology, School of Medicine, University of Puerto Rico, San Juan, PR, USA.
Background: Aspergillus penicillioides is a very common indoor xerophilic fungus and potential causative agent of respiratory conditions. Although people are constantly exposed to A. penicillioides, no proteins with allergenic potential have been described.
View Article and Find Full Text PDFPLoS One
November 2017
Department of Bioscience in Daily Life, College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa, Japan.
The fission yeast Schizosaccharomyces pombe undergoes a switch from yeast to filamentous invasive growth in response to certain environmental stimuli. Among them is ammonium limitation. Amt1, one of the three ammonium transporters in this yeast, is required for the ammonium limitation-induced morphological transition; however, the underlying molecular mechanism remains to be understood.
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