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Showing 1 to 20 of 85 for “"Trimers"”.
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Hamiltonian bifurcations in Schrodinger trimers
The phase space of the three-mode discrete NLS in the nonlinear regime with periodic boundary conditions is investigated by reducing the degree of freedom from three down to two. The families of standing waves are enumerated and normal forms are used to describe several families of relative …
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Dimers, Trimers and their Superpositions in a Bose-Fermi Mixture
… atoms. We examine the formation of dimers and trimers in a balanced, thermal mixture and their evolution into strongly interacting Bose polarons with hybridized dimer and trimer character when we instead immerse an impurity concentration of K into a dense quantum bath of Na. We report a novel …
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Pulsed molecular beam cavity microwave Fourier transform spectroscopy of some fundamental van der Waals dimers and trimers
… spectra of several van der Waals dimers and trimers, namely Ar-Cl₂, Ne-Kr, Ne-Xe, Ar-Xe, Kr-Xe, Ne₂-Kr and Ne₂-Xe, as well as Ar₂-OCS and Ar₂-CO₂, have been investigated using a pulsed molecular beam cavity microwave Fourier transform spectrometer. Ar-Cl₂ has been found to have a T-shaped …
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Infrared Photon Initiated Conformer Interconversion, Fourier Transform Microwave Spectroscopy of Hydrogen Bonded Trimers, and Study of Conformer Cooling in Supersonic Expansions
C-H stretch fundamentals were excited by an IR OPO laser in 2 molecules having conformers. Because the barrier for interconversion is lower (higher) in methyl vinyl ether (methyl nitrite) than IR photon energies, IR fluorescence spectra showed conformational interconversion occurred (did not …
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Scanning Tunneling Microscopy Studies of Cluster Diffusion in a Highly Mismatched system:Copper on Silver(111)
… and growth of Cu on Ag(111) reveal that trimers, once formed, have significantly higher mobilities than either atoms or dimers. While transient, this mobility makes trimers the dominant contributor to mass transport at temperatures allowing trimer formation (T ≥ 24 K). Using the STM …
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Scanning Tunneling Microscopy Studies of Cluster Diffusion in a Highly Mismatched System: Copper on Silver(111)
… and growth of Cu on Ag(111) reveal that trimers, once formed, have significantly higher mobilities than either atoms or dimers. While transient, this mobility makes trimers the dominant contributor to mass transport at temperatures allowing trimer formation (T ≥ 24 K). Using the STM tip, …
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Anchoring Energy of Dengue E Protein into Host Membranes and Quaternary Assembly Depend upon Lipid Composition
… protein E leads to the formation of fusogenic E trimers that facilitate membrane fusion with late endosomes. The fusion mechanism is not fully understood, but poses as a key target for inhibiting the viral infection pathway. An important aspect of fusion is the requirement of anionic lipids in …
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s-Triazine-Based Self-Assembling Information Molecules
… of length-complementary homo-sequence dimers and trimers demonstrated the desired duplex formation. Therefore, these synthetically accessible systems are promising prototypes for stable information molecules, with the potential to encode and replicate chemical information in the same way as DNA. …
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Imaging and Control of Heat Generation at the Nanoscale Using Plasmonic Structures
… profiles by designing and imaging nanorod trimers that are smaller than the diffraction limit of our pump and probe lasers. The trimers have three normal modes with different thermal profiles and resonant wavelengths. I show that these modes are sensitive to beam position and a focused …
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Computer Methods for Investigating Hydrogen-Bonded Equilibria in Alcohols
… monomer, closed cyclic and open chain dimers, trimers and tetramers. Ab initio calculations were carried out on these components using six basis sets up to the restricted Hartree Fock 6-31 l++G(3df,3pd) level. Relevant calculated infrared wavenumber and intensity values, O-H...O bond lengths …
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Purification and Characterization of Proteolytic Aspartate Transcarbamoylase (ATCase) from Burkholderia cepacia 25416 and Construction of a pyrB1 Knock-out Mutant
… which still demonstrated high activity as trimers. The proteolysis site is between Ser74 and Val75 residues. To confirm this, we converted the Ser74 residue to an Ala and to an Arg by site-directed mutagenesis. After this primary sequence changed, the proteolysis of ATCase was not observed. …
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Investigation of particulate HIV-1 Env vaccine candidates using Zera® and SpyTag/SpyCatcher technologies
… gp140-SpyTag (gp140-ST) was generated, and trimers were purified to homogeneity using gel filtration. SpyCatcher (SC)-AP205 VLPs were produced in E. coli and purified by ultracentrifugation. The gp140-ST trimers and the SCAP205 VLPs were mixed in varying molar ratios to generate VLPs …
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Palladium catalysed oligomerization of 1-alkynes
… were observed in most cases. Trimers were formed when phosphines were replaced with bldentate amines or phosphite ligands. A one to one mixture of PPh and (CH ) P gave the highest yield of oligomers with 6-methylene-nona-4-yne as the major product. No aromatics were formed with …
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Design, Synthesis and Study of Novel Multivalent Ligands - Toward New Markers of Cancer Cells
… to investigate different essential factors. Trimers composed of micromolar affinity MSH(4) targeting the MC1-R, overexpressed in melanoma, were investigated on a model cell line and resulted in the creation of nanomolar affinity constructs with up to 350 fold increase in affinity. Different …
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The solvent extraction of CU (II) from chloride solutions with certain non-chelating nitrogen donor ligands
… studies and formation constants for dimers and trimers obtained. Copper (II), Nickel (II) and Cobalt (II) are extracted by a solvating mechanism in which only the neutral MCl2 species is extractable. This reaction is largely independent of pH. Studies were also carried out on the use of the …
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Radical based molecular design of discrete and stereoregulated oligomers via photomediated RAFT single unit monomer insertion (photo-RAFT SUMI)
… further improvements. A library of enantiopure trimers with the same monomer sequence but different stereochemistry was thus obtained. These enantiopure trimers were comprehensively characterized by NMR, ESI-MS, XRD and 2D NOESY to confirm their unique stereo-structures which were then …
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Targeting the CD4 Binding Site of HIV
… precursor of 3BNC60 or with BG505 SOSIP trimers that resemble the native HIV-1 Env. Immunogens specifically designed to activate B cells bearing germline antibodies initiate immune responses, but they do not elicit bNAbs. In contrast, native-like Env trimers fail to activate B cells …
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Refining the HIV-1 glycan shield model: dynamics of a heterogeneous envelope trimer and empirical prediction of glycan processing
… of two computationally glycosylated HIV-1 Env trimers, one uniformly glycosylated, and the other based on the heterogeneous glycosylation of a laboratory determined gp160 strain. A secondary aim was to estimate whether the type of glycan is predictable using computational techniques, since …
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Identification and Characterization of Enzymes Involved in Post-translational Modifications of Phycobiliproteins in the Cyanobacterium Synechocystis sp. PCC 6803
… but before the PBP assemble into trimers. Candidates for the lyases responsible for attachment of phycocyanobilin to phycocyanin in Synechocystis sp. PCC 6803 are two cpeS-like genes (cpcS and cpcU) and one cpeT-like gene (cpcT). Through absorbance and fluorescence spectra, it was …
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Part I: The synthesis of chenodeoxycholic acid derived macrocyles and cage compounds. Part II. Sonogashira coupling for the synthesis of well-defined π-conjugated arylene ethynylene oligomers as blue-light-emitting materials
… OPEs 8-11, unsymmetric phenylene-ethynylene trimers and tetramers 13a-d, 16a-d and unsymmetrical phenylene-ethynylene compounds with the terminal allyloxy group 18a-f, 19a-b and 23 have been successfully synthesized using oxygen-free Sonogashira reaction conditions. The structures of these …
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