We estimated the genetic variability of nine fish species from the Brazilian upper Paraná River floodplain (Astyanax altiparanae, Hoplias malabaricus, Leporinus lacustris, Loricariichthys platymetopon, Parauchenipterus galeatus, Pimelodus maculatus, Rhaphiodon vulpinus, Roeboides paranensis and Serrasalmus marginatus) based on data for 36 putative allozyme loci obtained using corn starch gel el...

1. The effects of a 100 g/kg substitution of guar gum on the body-weight gain, food consumption and faecal dry weight of mice fed on a high-sucrose diet and on the activities of hepatic glucose-6-phosphate dehydrogenase (EC 1 . 1 . 1 .49), 6-phosphogluconate dehydrogenase (EC 1 . I . 1 .44), malate dehydrogenase (oxaloacetatedecarboxylating) (NADP+) (EC I . 1 . 1 .40), ATP-citrate (pro-3S)-lyas...

Erythritol is an important nutrient for several α-2 Proteobacteria, including N2-fixing plant endosymbionts and Brucella, a worldwide pathogen that finds this four-carbon polyol in genital tissues. Erythritol metabolism involves phosphorylation to L-erythritol-4-phosphate by the kinase EryA and oxidation of the latter to L-3-tetrulose 4-phosphate by the dehydrogenase EryB. It is accepted that f...

L-Sorbose degradation in Klebsiella pneumoniae was shown to follow the pathway L-sorbose leads to L-sorbose-1-phosphate leads to D-glucitol-6-phosphate leads to D-fructose-6-phosphate. Transport and phosphorylation of L-sorbose was catalyzed by membrane-bound enzyme IIsor of the phosphoenolpyruvate-dependent carbohydrate:phosphotransferase system, specific for and regulated by this ketose and d...

The effects of a 100 g/kg diet substitution of bagasse on the body-weight gain, food consumption and faecal dry weight of mice given a high-sucrose diet and on the activities of hepatic glucose-6-phosphate dehydrogenase (EC I.I.I.49), 6-phosphogluconate dehydrogenase (EC I.I.I.44), malate dehydrogenase (oxaloacetate-decarboxylating) (NADP+) (EC I.I.I.40), ATP-citrate (pro-3S) lyase (EC 4.I.3.8)...

We have purified and compared two different L-glycerol 3-phosphate:DPN-linked oxidoreductases (EC 1.1.1.8) from chicken, one from liver and the second from breast muscle. The crystalline enzyme from chicken breast muscle appears homogeneous by all tests applied. The purified glycerol j-phosphate dehydrogenase from chicken liver appears homogeneous by electrophoresis and sedimentation ultracentr...

We have purified and compared two different L-glycerol 3-phosphate:DPN-linked oxidoreductases (EC 1.1.1.8) from chicken, one from liver and the second from breast muscle. The crystalline enzyme from chicken breast muscle appears homogeneous by all tests applied. The purified glycerol j-phosphate dehydrogenase from chicken liver appears homogeneous by electrophoresis and sedimentation ultracentr...

Cytochrome oxidase, glycerol-3-phosphate dehydrogenase, and succinate dehydrogenase were measured in mitochondrial fractions obtained from rat soleus muscle of control and 8 week T3 + T4 treated animals. Under these conditions of prolonged treatment, there is a five-fold increase in the specific activities of both cytochrome oxidase and glycerole-3-phosphate dehydrogenase. Significant increases...

Sorbitol is a low-calorie sugar alcohol that is largely used as an ingredient in the food industry, based on its sweetness and its high solubility. Here, we investigated the capacity of Lactobacillus plantarum, a lactic acid bacterium found in many fermented food products and in the gastrointestinal tract of mammals, to produce sorbitol from fructose-6-phosphate by reverting the sorbitol catabo...

Two major species of glucose-6-phosphate dehydrogenase (EC 1.1.1.49) differing in size, pyridine nucleotide specificity, and susceptibility to inhibition by adenosine 5'-triphosphate (ATP) were detected in extracts of Pseudomonas multivorans (which has recently been shown to be synonymous with the species Pseudomonas cepacia) ATCC 17616. The large species (molecular weight ca. 230,000) was acti...