We found that proline oxidase, the first enzyme of the proline degradative pathway, is inhibited by lactate. The Km of the enzyme for proline increases with increasing concentrations of lactate. Since proline can be a source for gluconeogenesis, regulation of proline degradation by lactate may serve as a mechanism for allocation of metabolic fuel sources. The marked inhibition of proline oxidas...

Ketoprofen is a non-steroidal anti-inflammatory compound (NSAID) which has low solubility in water. The aim of this study was to increase the dissolution rate ketoprofen by forming multicomponent ketoprofen-Proline with ratio 1:1, 1:2, and 2:1 using solid state grinding method. Samples were characterized Powder X-Ray Diffractometry (PXRD), Differential Scanning Calorimetry (DSC), Fourier Transf...

under osmotic stresses, proline accumulation is an important response of plants to these conditions. proline is a compatible osmolyte which affects many cellular and molecular aspects of plant in both normal and stressful situations. proline is shown to be involved in plant development in normal condition and in conferring resistance to plant under biotic and abiotic stresses. therefore, many s...

Proline is metabolized by its own specialized enzymes with their own tissue and subcellular localizations and mechanisms of regulation. The central enzyme in this metabolic system is proline oxidase, a flavin adenine dinucleotide-containing enzyme which is tightly bound to mitochondrial inner membranes. The electrons from proline can be used to generate ATP or can directly reduce oxygen to form...

Proline has important roles in multiple biological processes such as cellular bioenergetics, cell growth, oxidative and osmotic stress response, protein folding and stability, and redox signaling. The proline catabolic pathway, which forms glutamate, enables organisms to utilize proline as a carbon, nitrogen, and energy source. FAD-dependent proline dehydrogenase (PRODH) and NAD+-dependent glut...

Background and purpose Heavy alcohol drinking-induced alcoholic fatty liver, steatohepatitis, early-stage liver fibrosis may progress to advanced-stage (AALF)/cirrhosis. The lack of non-invasive imaging techniques for the diagnosising collagenogenesis in activated hepatic stellate cells (HSCs) can lead incurable at early reversible stage. Proline has been known as most abundant amino acid colla...

the tp53 tumor suppressor gene plays important roles in genomic stability. a common polymorphism at codon 72 of tp53 gene has been associated with increased risk for many human cancers. the p53 protein is expressed in colorectal cancer, but the reported prevalence of its expression varies widely. in the present study, the p53 protein expression in different genotypes of its codon 72 , was inves...

Proline-induced germ-tube formation and cell-cell aggregation in four strains of Candida albicans were completely inhibited when the pH of the medium was 5.0 or lower, whereas morphogenesis induced by N-acetylglucosamine (GlcNAc) was unaffected even at pH 4.5. The pH sensitivity of proline-induced germ-tube formation was not caused by a modulation of proline uptake, which was unchanged over the...

The pathway for proline degradation in Salmonella typhimurium appears to be identical to that found in Escherichia coli and Bacillus subtilis. Delta(1)-Pyrroline-5-carboxylic acid (P5C) is an intermediate in the pathway; its formation consumes molecular oxygen. Assays were devised for proline oxidase and the nicotinamide adenine dinucleotide phosphate-specific P5C dehydrogenase activities. Both...