A protein amino acid, phenylalanine-based bolaamphiphile 1 containing a centrally located oligomethylene group has been found to be hydrogelator at nearly physiological pH (pH 6.5−7.2) in the presence of divalent metal salts (such as MnCl2, CoCl2, CuSO4, and NiCl2) on sonication. Other structurally related synthetic bolaamphiphiles 2−4 do not form hydrogels under similar conditions. The metallo-hydrogels have characterized using transmission electron microscopic (TEM) studies FT-IR studies....

Tripeptide with redox active chemical entities based smart organogels have been used for in situ formation and stabilization of gold silver nanoparticles within the supramolecular gel networks are aligned arrays along nanofibers peptide 1–toluene gels.

Abstract Three newly defined information theoretic topological indices, namely “degree complexity ( I d ),” “graph vertex H V and distance D )” along with three other indices have been used to study their discriminating power of 45 trees 19 monocyclic graphs. It is found that the satisfactory while has be only index discriminate all graphs studied.

We have previously demonstrated that introgression of PcINO1 gene from Porteresia coarctata (Roxb.) Tateoka, coding for a novel salt-tolerant L-myo-inositol 1-phosphate synthase (MIPS) protein, confers salt tolerance to transgenic tobacco plants (Majee, M., Maitra, S., Dastidar, K.G., Pattnaik, Chatterjee, A., Hait, N.C., Das, K.P. and Majumder, A.L. (2004) A L-myo-inositol-1-phosphate halophytic wild rice: molecular cloning, bacterial overexpression, characterization, functional into...

The pH-induced self-assembly of three synthetic tripeptides in water medium is used to immobilize luminescent CdS nanoparticles. These peptides form a nanofibrillar network structure upon gelation aqueous at basic pH values (pH 11.0-13.0), and the fabrication nanoparticles on gel nanofiber confers property these gels. Atomic force microscopy, field-emission scanning electron high-resolution transmission microscopy clearly reveal presence well-defined array nanofibers. This convenient way...

ABSTRACT Methylated inositol D‐pinitol (3‐O‐methyl‐D‐chiro‐inositol) accumulates in a number of plants naturally or response to stress. Here, we present evidence for accumulation and salt‐enhanced synthesis pinitol Porteresia coarctata, halophytic wild rice, contrast its absence domesticated rice. A cDNA coarctata methyl transferase 1 ( PcIMT1 ), coding the implicated has been cloned from P. , bacterially overexpressed shown be functional vitro . In silico analysis confirms an IMT1 homolog...

Environmental stresses generate reactive oxygen species (ROS) which might be detrimental to the plants when produced in an uncontrolled way. However, ameliorate such by synthesizing antioxidants and enzymes responsible for dismutation of ROS. Additionally, dehydrins were also able protect inactivation enzyme lactate dehydrogenase against hydroxyl radicals (OH⋅) generated during Fenton's reaction. SbDhn1 SbDhn2 overexpressing transgenic tobacco oxidative damage. Transgenic lines showed better...

YSK2 type dehydrin from Sorghum bicolor (SbDhn1) showed a high level of transcript accumulation when subjected to temperature and osmotic stress. The occurring in such stress situation might lead protective effect; though the exact mechanism by which this is achieved remains poorly understood. Nevertheless, our results provide compelling evidence prove that transgenic tobacco lines overexpressing SbDhn1 gene improve tolerance as assessed reduced membrane damage low MDA content. Furthermore,...

Abstract Our previous findings demonstrated that astrocytic HIF‐1α plays a major role in HIV‐1 Tat‐mediated amyloidosis which can lead to Alzheimer's‐like pathology‐a comorbidity of HIV‐Associated Neurocognitive Disorders (HAND). These amyloids be shuttled extracellular vesicles, and we sought assess whether Tat stimulated astrocyte‐derived EVs (ADEVs) containing the toxic could result neuronal injury vitro vivo. We thus hypothesized blocking likely mitigate Tat‐ADEV‐mediated injury. Rat...

Gold nanoparticles of various shapes including pentagonal, hexagonal, prismatic, branched (multipods), spherical and oval have been prepared by using different generations peptidic dendrons as templates at room temperature without adding any external reducing or stabilizing agents. Each peptide based dendron molecule (G1, G2 G3) contains a redox active tyrosine (Tyr) moiety free –NH2group the N-terminus result that each peptide-dendron can be used to reduce AuCl4− Au0 stabilize nascent gold...

A metal-free three component cyclization reaction with amidation is devised for direct synthesis of DFT-designed amido-phenazine derivative bearing noncovalent gluing interactions to fabricate organic nanomaterials. Composition-dependent nanoelectronics nonvolatile memory devices are discovered using mixed phenazine-stearic acid (SA) We simultaneous two different types nonmagnetic and non-moisture sensitive switching resistance properties fabricated utilizing nanomaterials: (a) sample-1(8:SA...

A water-soluble tripeptide Val–Ile–Ala (VIA) 1, bearing sequence identity with the C-terminal portion of Alzheimer Aβ-peptide (Aβ40–42), self-assembles, in crystalline form, to produce an intermolecularly hydrogen bonded supramolecular β-sheet structure which self-associates form straight, unbranched nanofibrils exhibiting amyloid-like behavior; contrast, synthetic Ala–Val–Ile (AVI) 2 self-assembles a that forms branched do not show any characteristic features fibrils.

Surface-modified silica particles were prepared via solid-phase grafting methodology, and their prospective utility in wastewater treatment was evaluated. The structure–activity relationship of the designed investigated for surfaces grafted with various amino acid-based peptide molecules to determine effect chemical nature on adsorption capacity these surface-modified particles. successful organic phase over modified surface confirmed basis infrared absorption solid-state 13C NMR data, as...

Abstract Halophytes are rich sources of salt stress tolerance genes which have often been utilized for introduction salt-tolerance character in salt-sensitive plants. In the present study, we overexpressed PcINO1 and PcIMT1 gene(s), earlier characterized this laboratory from wild halophytic rice Porteresia coarctata , into IR64 indica either singly or combination assessed their role conferring salt-tolerance. Homozygous T 3 /T 4 transgenic plants revealed that transformed lines exhibit...

Terminally protected acyclic tripeptides Boc-Tyr(1)-Val(2)-Tyr(3)-OMe 1 and Boc-Tyr(1)-Ile(2)-Tyr(3)-OMe 2 self-assemble into nanotubes in crystals through various noncovalent interactions with an average internal diameter of 5 Å (0.5 nm), the tubular ensemble is developed hydrogen-bonded side chains tyrosine residues. The inside hollow nanotubular structures hydrophilic; however, no solvent molecules have been crystallographically detected.