The feasibility of a peroxidase–aldolase cascade reaction for the synthesis therapeutically-valuable iminocyclitols is discussed herein. A two-enzyme system consisting chloroperoxidase (CPO) and D-fructose-6-phosphate aldolase (FSA) was evaluated D-fagomine precursor (preFagomine) from N-Cbz-3-aminopropanol. An in-depth, systematic, step-by-step kinetic modeling seven reactions two inactivation...

Blood samples from diseased and clinically healthy Balady sheep of both sexes were collected and subjected for biochemical analysis of serum glucose, fructosamine, lactate, growth hormone, insulin, creatine phosphokinase, Lactate dehydrogenase and aldolase. The obtained results revealed a significant decrease in serum zinc and growth hormone were stated. In contrary, serum glucose and lactate, ...

Agents that damage DNA in Escherichia coli or interfere with its replication induce DNA repair and mutagenesis via the SOS response. This well-known activity is regulated by the RecA protein and the LexA repressor. Following repair or bypass of the DNA lesion, the cell returns to its resting state by a largely unknown process. We found that 2-keto-4-hydroxyglutarate aldolase (4-hydroxy-2-oxoglu...

BACKGROUND Photosynthetic microalgae are emerging as potential biomass feedstock for sustainable production of biofuels and value-added bioproducts. CO2 biomitigation through these organisms is considered as an eco-friendly and promising alternative to the existing carbon sequestration methods. Nonetheless, the inherent relatively low photosynthetic capacity of microalgae has hampered the pract...

CODING SEQUENCE: Human aldolase B gene (ALDOB). The gene is a single copy and its chromosomal location is 9q21.3-q32 MENDELIAN INHERITANCE: Demonstrated in one family. The mother and the son are heterozygotes, whereas the father is a homozygote. OTHER COMMENTS: Hereditary fructose intolerance is due to a lack of aldolase B activity in liver. Although we observed no 2.3 kb homozygotes, no sign o...

We have isolated a mutant of Pseudomonas aeruginosa deficient in fructose 1,6-bisphosphate aldolase activity. This mutant, similar to the mutants deficient in any of the Entner-Doudoroff pathway enzymes, does not allow appreciable alginate formation from glucose and gluconate, but allows alginate synthesis from mannitol and fructose. This suggests that glucose and gluconate must be converted to...

A soluble fructose-1,6-bisphosphate aldolase enzyme has been purified 50.2-fold (2.36%) at the homogeneity from the electric organ of Electrophorus electricus by one step of DEAE-52 anion exchange chromatography followed by Superose-12 gel filtration-FPLC. Like other aldolase enzymes the E. electricus protein is a dimer with two identical subunits of 45 kDa. The N-terminal (20 residues) reveale...

Nitration of tryptophan residues is a novel post-translational modification. In the present study, we examined whether NO2Trp (nitrotryptophan)-containing proteins are produced in the hippocampus and cerebellum of the adult rat under physiological conditions in vivo. Using Western blot analysis with anti-6-NO2Trp-specific antibody, we found many similar immunoreactive spots in the protein extra...

The Bering Land Bridge has served as a major corridor of interchange between the northern continents for many organisms. We investigated the phylogeny of all extant species of Martes (except for Martes gwatkinsi from India) to infer evolutionary relationships and characterize the extent of trans-Beringian movements. Analyses of complete sequences of the mitochondrial cytochrome b gene and parti...

The problem of lactose synthesis in the mammary gland is two-fold: (a) the mechanism by which galactose is formed and (b) the mechanism of condensation of t’he monosaccharide precursors to form the disaccharide. Several mechanisms for the glucose-galactose interconversion in nature have been postulated: (a) Walden inversion of the hydroxyl on carbon atom 4 of glucose (Rohman (I), Robinson (a), ...