Rani Gupta

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Lipases are versatile biocatalysts that can perform innumerable different reactions. Their enantio-, chemo- and stereo-selective nature makes them an important tool in the area of organic synthesis. Unlike other hydrolases that work in aqueous phase, lipases are unique as they act at the oil/water interface. Besides being lipolytic, lipases also possess(More)
Two new lipases, LIP14 and LIP18, along with LIP8 from Yarrowia lipolytica MSR80 were functionally expressed as extracellular proteins with an IgG tag using Escherichia coli HB101 pEZZ18 host vector system. Each enzyme had an optimal activity at pH 7 and 40 °C and was activated by 6 mM Ca2+ and 90 % (v/v) non-polar solvents but inhibited by 10 mM of each(More)
1. Following opioid-induced antinociception in mice, hyperalgesic responses may be observed. The present study was designed to evaluate the effect of different N-methyl-d-aspartate (NMDA) receptor modulators (magnesium, dextromethorphan, d-serine) on the development of morphine-induced hyperalgesia in mice. The tail-flick test was used to assess the effects(More)
  • Bharat Bhushan Agrawal, Priyadarshi Suraj, Rani Gupta
  • 2010
In this paper a novel printed monopole antenna for ultra wide band applications is proposed. To increase the impedance bandwidth of an antenna, a rectangular slit is inserted in the ground plane and two square notches are introduced on the upper corners of the patch. In the proposed antenna, modified U slots are used in the radiating patch to reject the(More)
An extracellular keratinase from Bacillus pumilus KS12 was purified by DEAE ion exchange chromatography. It was a 45 kDa monomer as determined by SDS PAGE analysis. It was found to be an alkaline, serine protease with pH and temperature optima of 10 and 60°C, respectively. It was thiol activated with two- and eight-fold enhancement in presence of 10 mM DTT(More)
Keratinases are well-recognized enzymes with the unique ability to attack highly cross-linked, recalcitrant structural proteins such as keratin. Their potential in environmental clean-up of huge amount of feather waste has been well established since long. Today, they have gained importance in various other biotechnological and pharmaceutical applications.(More)
The objective of this study was to assess blood pressure and autonomic activity during rest and recovery in young adult normotensives offsprings of hypertensives. A total of 49 healthy normotensive males with BMI of 18.5-24.9 kg/m2 chosen for the study and classified into two groups based on their parental history of hypertension underwent a sub maximal(More)
γ-Glutamyl transpeptidase of a thermo-acidophilic archaeon Picrophilus torridus was cloned and expressed using E. coli Rosetta-pET 51b(+) expression system. The enzyme was expressed at 37 °C/200 rpm with γ-GT production of 1.99 U/mg protein after 3 h of IPTG induction. It was improved nearby 10-fold corresponding to 18.92 U/mg protein in the presence of 2 %(More)
Strains of Bacillus thuringiensis produce insecticidal proteins. These strains have been isolated from diverse ecological niches, such as soil, phylloplane, insect cadavers and grain dust. To effectively propagate, these strains produce a range of molecules that facilitate its multiplication in a competing environment. In this report, we have examined(More)
Since polyamines (PAs) play a potential role in the regulation of growth and developmental processes in a wide variety of organisms, we have examined the influence of the PAs putrescine (Put) and spermidine (Spd) and the PA biosynthetic inhibitors alpha-difluoromethylornithine (DFMO), alpha-difluoromethylarginine (DFMA), methylglyoxal bis-(guanylhydrazone)(More)