DSpace at Bose Institute: Recent submissions
Now showing items 1241-1260 of 2749
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Modulation of DNA-binding activity of Mycobacterium tuberculosis HspR by chaperones
(SOC GENERAL MICROBIOLOGY, 2008-02)In Mycobacterium tuberculosis, hspR is the last gene of the dnaKJE operon. It encodes the repressor HspR, which regulates the expression from this operon by binding to a consensus upstream sequence known as HAIR (HspR-associated ... -
Quantum time-of-flight distribution for cold trapped atoms
(AMERICAN PHYSICAL SOC, 2007-04-01)The time-of-flight distribution for a cloud of cold atoms falling freely under gravity is considered. We generalize the probability current density approach to calculate the quantum arrival time distribution for the mixed ... -
Allergy to periwinkle pollen (Catharanthus roseus G. Don.)
(INST AGRICULTURAL MEDICINE, 2007)Catharanthus roseus G. Don. (CR) or periwinkle plants are widely grown/ cultivated as garden plants in the tropics ard subtropics. In spite of its predominantly entomophilous nature, CR pollen had been reported to be ... -
DNA bending in the mycobacterial plasmid pAL5000 origin-RepB complex
(AMER SOC MICROBIOLOGY, 2007-12)Plasmid pAL5000 represents a family of relatively newly discovered cryptic plasmids in gram-positive Actinomycetes bacteria. The replication regions of these plasmids comprise a bicistronic operon, repA-repB, encoding two ... -
Aerobiological investigation and in vitro studies of pollen grains from 2 dominant avenue trees in Kolkata, India
(ESMON PUBLICIDAD S A, 2008)Background: Peltophorum pterocarpum and Delonix regia are dominant avenue trees in the city of Kolkata in India. They are well adapted to the humid tropical climate and also grow commonly in different parts of the country. ... -
Bistability: a universal theme
(Indian Society of Cell Biology, 2007-01-01)T he concept of bistability is well-established in the study of dynamical systems [1]. The key feature of a dynamical system is that the state of the system changes as a function of time. The living cell offers several ... -
The S4-intermediate pathway for the oxidation of thiosulfate by the chemolithoautotroph Tetrathiobacter kashmirensis and inhibition of tetrathionate oxidation by sulfite
(ELSEVIER, 2007-05)Chemolithotrophic oxidation of reduced sulfur compounds was studied in the betaproteobacterium Tetrathiobacter kashmirensis in correlation with its transposon (Tn5-mob)-inserted mutants impaired in sulfur oxidation (Sox(-)) ... -
Structural insight into protein T1, the non-allergenic member of the Bet v 1 allergen family - An in silico analysis
(PERGAMON-ELSEVIER SCIENCE LTD, 2008-01)Background: Bet v 1 family is a large group of allergens present in pollen and plant-derived foods. They show similarity in sequence and 3D structure, properties often correlated to their cross-reactivity. protein T1 is a ... -
Induction of host protective th1 immune response by chemokines in Leishmania donovani-infected BALB/c mice
(BLACKWELL, 2007-12)The resolution from leishmanial infection is dependent on the coordinated interactions between the components of the cell mediated immune system and the activation of T-cell population into appropriate cytokine production ... -
Positive feedback, stochasticity and genetic competence
(IOP PUBLISHING LTD, 2007-03-01)A single gene, regulating its own expression via a positive feedback loop, constitutes a common motif in gene regulatory networks and signalling cascades. Recent experiments on the development of competence in the bacterial ... -
Stochastic model of transcription factor-regulated gene expression
(IOP PUBLISHING LTD, 2006-09-01)We consider a stochastic model of transcription factor (TF)-regulated gene expression. The model describes two genes, gene A and gene B, which synthesize the TFs and the target gene proteins, respectively. We show through ... -
Entangled spin clusters: Some special features
(AMERICAN PHYSICAL SOC, 2006-07-01)In this paper, we study three specific aspects of entanglement in small spin clusters. We first study the effect of inhomogeneous exchange coupling strengths on the entanglement properties of the S= 1 2 antiferromagnetic ... -
Immunomodulatory role of arabinosylated lipoarabinomannan on Leishmania donovani infected murine macrophages
(NATL INST SCIENCE COMMUNICATION, 2007-10)Arabinosylated lipoarabinomannan (Ara-LAM), a surface glycolipid antigen isolated from avirulent Mycobacterium smegmatis is involved in modulation of host cell signaling. In this study, we investigated Ara-LAM-mediated ... -
In vitro conservation of Plumbago indica - A rare medicinal plant
(Society for Biology and Biotechnology, 2007-03)Present work has been conducted on in vitro conservation of a rare medicinal plant, Plumbago indica, through storage of germplasms derived from micropropagated progenies of the species. Direct regeneration of axillary ... -
Leishmania donovani-induced ceramide as the key mediator of Akt dephosphorylation in murine macrophages: Role of protein kinase C zeta and phosphatase
(AMER SOC MICROBIOLOGY, 2007-05)Leishmania donovani is an intracellular protozoan parasite that impairs the host macrophage immune response to render it suitable for its survival and establishment. L. donovani-induced immunosuppression and alteration of ... -
Trans-acting factor designated OSBZ8 interacts with both typical abscisic acid responsive elements as well as abscisic acid responsive element-like sequences in the vegetative tissues of indica rice cultivars
(SPRINGER, 2008-04)Specific cis-acting elements, identified in the stress-regulated promoters, can respond to the changes in the levels of abscisic acid. Most of our previous works were done with ACGT-containing typical abscisic acid responsive ... -
Tobacco proliferating cell nuclear antigen binds directly and stimulates both activity and processivity of ddNTP-sensitive mungbean DNA polymerase
(ELSEVIER SCIENCE INC, 2007-12-01)PCNA is well known as a component of DNA replication system and plays important roles in multiple cellular pathways in addition to replication and repair. In this work we have demonstrated the physical and functional ... -
Transgenic tobacco plants overexpressing the heterologous lea gene Rab16A from rice during high salt and water deficit display enhanced tolerance to salinity stress
(SPRINGER, 2007-10)The full length Rab16A, from the indica rice Pokkali, was introduced into tobacco by Agrobacterium-mediated transformation. The transgene was stably integrated into the genome and they originated from different lines of ...