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Department of Biotechnology & Bioinformatics
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Department of Chemistry
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    ABSTRACT: Solar light induced interfacial charge transfer of electrons from TiO2 to CuO in a water-glycerol mixture produced 99 823 μmol h(-1) g(-1)catalyst of hydrogen gas. The dispersed CuO/TiO2 photocatalyst in solution exhibited uni-directional electron flow and capture at the Schottky barrier facilitating charge separation and electron transfer resulting in enhanced H2 production performance.
    Chemical Communications 09/2013; 49(82). DOI:10.1039/c3cc44742a
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    ABSTRACT: Peroxisome proliferator-activated receptor alpha (PPAR-α) belongs to the nuclear receptor superfamily of proteins. It is one of the principle regulators of metabolism and lipid homeostasis whose malfunction leads to complications including obesity and type 2 diabetes. In the adipose tissue, glyceroneogenesis is a unique pathway through which pyruvate is converted into glycerol-3- phosphate (G3P) in a multistep process. Previous findings demonstrated that glyceroneogenesis regulates triacylglycerol synthesis and adipogenesis. This led us to hypothesize that one of the pathway intermediate is physiologically relevant PPAR-α ligand. In the present study using in silico docking, we proved that glycerate, dihydroxy acetone phosphate, glyceraldehyde-3-phosphate, and G3P are key glyceroneogenesis pathway intermediates which bind to PPAR-α. They bind PPAR-α with comparable binding energy and docking score to that of (2s)-2-ethoxy-3-[4-(2-{4-[(methylsulfonyl)oxy]phenyl}ethoxy)phenyl]propanoic acid(AZ-2), a synthetic high affinity ligand of PPAR-α. These intermediates could be studied further as potential physiologically relevant activators of PPAR-α in vitro and in vivo.
    Bioinformation 07/2013; 9(12):629-32. DOI:10.6026/97320630009629
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    ABSTRACT: Peroxisome proliferator-activated receptor-γ (PPAR-γ) is a nuclear transcription factor which is involved in the differentiation of fibroblasts to adipocytes in vitro. PPAR-γ also plays a pivotal role in inflammation and macrophage activation. Furthermore, type 2 diabetes mellitus (T2DM), a condition in which an individual's ability to respond to insulin is lowered, is treated by drugs called thiazolidinediones (TZDs) that are known to activated PPAR-γ, thus augmenting insulin signaling and glucose uptake by adipose tissue. Unfortunately, these otherwise effective drugs are responsible for side effects such as obesity and cardiovascular diseases. The ligand-binding ability of PPAR-γ is different from other nuclear receptors since it can bind to a wide variety of ligands. Although a number of compounds have been shown to activate PPAR-γ, knowledge of its endogenous ligands and their physiological functions is lacking. The known ligands were either ambiguous or found to produce ill effects in vivo. In this review we discuss the structure and functions of PPAR-γ, ligands discovered so far, and focus on the importance of identification of physiologically relevant endogenous ligands.
    05/2013; DOI:10.2174/18715303113139990003


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    Cuddapah, India
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