Results 41 to 50 of about 34,496 (157)

Length and sequence relaxation of copolymers under recombination reactions

open access: yes, 2017
We describe the kinetics and thermodynamics of copolymers undergoing recombination reactions, which are important for prebiotic chemistry. We use two approaches: the first one, based on chemical rate equations and the mass-action law describes the ...
Blokhuis, Alex, Lacoste, David
core   +1 more source

Remnants of an ancient metabolism without phosphate [PDF]

open access: yes, 2017
Phosphate is essential for all living systems, serving as a building block of genetic and metabolic machinery. However, it is unclear how phosphate could have assumed these central roles on primordial Earth, given its poor geochemical accessibility.
Goldford, Joshua E.   +3 more
core   +1 more source

Preferential interaction coefficient for nucleic acids and other cylindrical poly-ions

open access: yes, 2007
The thermodynamics of nucleic acid processes is heavily affected by the electric double-layer of micro-ions around the polyions. We focus here on the Coulombic contribution to the salt-polyelectrolyte preferential interaction (Donnan) coefficient and we ...
Tellez, G., Trizac, E.
core   +2 more sources

Genome-scale architecture of small molecule regulatory networks and the fundamental trade-off between regulation and enzymatic activity [PDF]

open access: yes, 2017
Metabolic flux is in part regulated by endogenous small molecules that modulate the catalytic activity of an enzyme, e.g., allosteric inhibition. In contrast to transcriptional regulation of enzymes, technical limitations have hindered the production of ...
Briars, Emma   +6 more
core   +2 more sources

The RNA Newton Polytope and Learnability of Energy Parameters [PDF]

open access: yes, 2013
Despite nearly two scores of research on RNA secondary structure and RNA-RNA interaction prediction, the accuracy of the state-of-the-art algorithms are still far from satisfactory.
Chitsaz, Hamidreza   +1 more
core   +1 more source

Coarse-grained simulations of RNA and DNA duplexes

open access: yes, 2013
Although RNAs play many cellular functions little is known about the dynamics and thermodynamics of these molecules. In principle, all-atom molecular dynamics simulations can investigate these issues, but with current computer facilities, these ...
Cragnolini, Tristan   +2 more
core   +1 more source

An O(n^5) algorithm for MFE prediction of kissing hairpins and 4-chains in nucleic acids [PDF]

open access: yes, 2008
Efficient methods for prediction of minimum free energy (MFE) nucleic secondary structures are widely used, both to better understand structure and function of biological RNAs and to design novel nano-structures.
Chen, Ho-Lin   +2 more
core   +3 more sources

Ab initio RNA folding

open access: yes, 2014
RNA molecules are essential cellular machines performing a wide variety of functions for which a specific three-dimensional structure is required. Over the last several years, experimental determination of RNA structures through X-ray crystallography and
Cragnolini, Tristan   +2 more
core   +1 more source

Cause of Chirality Consensus

open access: yes, 2009
Biological macromolecules, proteins and nucleic acids are composed exclusively of chirally pure monomers. The chirality consensus appears vital for life and it has even been considered as a prerequisite of life.
Annila, Arto   +2 more
core   +1 more source

On the Stabilizing Action of Protein Denaturants: Acetonitrile Effect on Stability of Lysozyme in Aqueous Solutions [PDF]

open access: yes, 2000
Stability of hen lysozyme in the presence of acetonitrile (MeCN) at different pH values of the medium was studied by scanning microcalorimetry with a special emphasis on determination of reliable values of the denaturational heat capacity change.
Kovriguine, Evgueni, Potekhin, Sergey A.
core   +2 more sources

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