Results 11 to 20 of about 766,908 (329)

Reversible mechanical control of molecular conformation. [PDF]

open access: yesCommun Chem, 2020
Controlling molecular conformation through macroscopic mechanical stimulus may have applications in chiroptical devices, but achieving this in a 3D material is challenging. Now, a quantitative relationship between stretching of an elastomer and reversible conformational changes of a crosslinked molecule has been established.
Bissette AJ.
europepmc   +4 more sources

CONFORMATIONAL TRANSITIONS IN MOLECULAR SYSTEMS [PDF]

open access: yesPath Integrals — New Trends and Perspectives, 2008
Proteins are the "work horses" in biological systems. In almost all functions specific proteins are involved. They control molecular transport processes, stabilize the cell structure, enzymatically catalyze chemical reactions; others act as molecular motors in the complex machinery of molecular synthetization processes.
Bachmann, Michael, Janke, Wolfhard
openaire   +2 more sources

Tetra­butyl­ammonium tris­(methyl­sulfanylmeth­yl)phenyl­borate [PDF]

open access: yes, 2009
In the title molecular salt, C16H36N+·C12H20BS3-, three of the four n-butyl chains show a trans conformation, whereas the fourth has the C—C—C—C torsion angle in a gauche conformation [-77.8 (5)°]. In the crystal, mol­ecules are packed in layers parallel
Bolte, Michael   +2 more
core   +3 more sources

Theoretical Study of Some Nitrososulfamide Compounds with Antitumor Activity

open access: yesMolecules, 2004
The lowest-energy conformations of four 2-chloroethylnitrososulfamides were determined using the MM+ molecular mechanics method as implemented in Hyperchem 6.0. Some of the calculated structural parameters, angles and bonds lengths were compared with the
Madi Fatiha   +2 more
doaj   +1 more source

Functionalized 3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-(4-substituted-phenyl)prop-2-en-1-ones: synthetic pathway, and the structures of six examples

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
Five examples each of 3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-[4-(prop-2-yn-1-yloxy)phenyl]prop-2-en-1-ones and the corresponding 1-(4-azidophenyl)-3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)prop-2-en-1-ones have been synthesized in a ...
Haruvegowda Kiran Kumar   +6 more
doaj   +1 more source

Molecular Actuators in Action: Electron-Transfer-Induced Conformation Transformation in Cofacially Arrayed Polyfluorenes [PDF]

open access: yes, 2018
There is much current interest in the design of molecular actuators, which undergo reversible, controlled motion in response to an external stimulus (light, heat, oxidation, etc.).
Cai, Sheng   +7 more
core   +3 more sources

Conformational Plasticity of HLA-B27 Molecules Correlates Inversely With Efficiency of Negative T Cell Selection [PDF]

open access: yes, 2020
The development of autoimmune disorders is incompletely understood. Inefficient thymic T cell selection against self-peptides presented by major histocompatibility antigens (HLA in humans) may contribute to the emergence of auto-reactive effector cells ...
Loll, Bernhard   +3 more
core   +1 more source

Bulk and Surface Conformations in Solid-State Lovastatin: Spectroscopic and Molecular Dynamics Studies

open access: yesCrystals, 2021
Conformational flexibility in molecules can give rise to a range of functional group terminations at crystal surfaces and dynamic disorder in the bulk.
Anuradha R. Pallipurath   +4 more
doaj   +1 more source

Identifying the protein folding nucleus using molecular dynamics [PDF]

open access: yes, 2000
Molecular dynamics simulations of folding in an off-lattice protein model reveal a nucleation scenario, in which a few well-defined contacts are formed with high probability in the transition state ensemble of conformations.
Buldyrev, Sergey V.   +3 more
core   +1 more source

The Rotational Barrier in Ethane: A Molecular Orbital Study

open access: yesMolecules, 2012
The energy change on each Occupied Molecular Orbital as a function of rotation about the C-C bond in ethane was studied using the B3LYP, mPWB95 functional and MP2 methods with different basis sets.
Gonzalo J. Mena-Rejón   +3 more
doaj   +1 more source

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