Growth and proline content in NaCl stressed plants of annual medic species [PDF]
Wild populations of Medicago ciliaris and Medicago polymorpha were subjected to four salt treatments 0, 50, 100 and 150 mM NaCl, plant growth and proline concentration in leaves were assessed. The analyzed data revealed significant variability in salt response within and between the two species, depending on the salinity level.
arxiv +1 more source
Investigating the side-chain structural organization behind the stability of protein folding and binding [PDF]
What are the molecular mechanisms that dictate protein-protein binding stability and whether those are related to the ones behind protein fold stability are still largely open questions. Indeed, despite many past efforts, we still lack definitive models to account for experimental quantities like protein melting temperature or complex binding affinity.
arxiv +1 more source
Concentration-Flux-Steered Mechanism Exploration with an Organocatalysis Application [PDF]
Investigating a reactive chemical system with automated reaction network exploration algorithms provides a more detailed picture of its chemical mechanism than what would be accessible by manual investigation. In general, exploration algorithms cannot uncover reaction networks exhaustively for feasibility reasons.
arxiv +1 more source
Proline isomerization regulates the phase behavior of elastin-like polypeptides in water [PDF]
Responsiveness of polypeptides and polymers in aqueous solution plays an important role in biomedical applications and in designing advanced functional materials. Elastin-like polypeptides (ELPs) are a well-known class of synthetic intrinsically disordered proteins (IDPs), which exhibit a lower critical solution temperature (LCST) in pure water.
arxiv
Why and How Coronavirus Has Evolved to Be Uniquely Contagious, with Uniquely Successful Stable Vaccines [PDF]
Spike proteins, 1200 amino acids, are divided into two nearly equal parts, S1 and S2. We review here phase transition theory, implemented quantitatively by thermodynamic scaling. The theory explains the evolution of Coronavirus extremely high contagiousness caused by a few mutations from CoV2003 to CoV2019 identified among hundreds in S1.
arxiv
Sequence Evolution, Structure and Dynamics of Transmembrane Proteins: Rhodopsin [PDF]
Rhodopsin is a G-protein coupled receptor found in retinal rod cells, where it mediates monocrhromatic vision in dim light. It is one of the most studied proteins with thousands of reviewed entries in Uniprot. It has seven transmembrane segments, here examined for their hydrophobic character, and how that has evolved from chickens to humans.
arxiv
Comment on: Synthesis, growth and characterization of a new metal organic Nlo material: Dibromo bis(L proline)Cd(II) [PDF]
The title paper by Boopathi and Ramasamy reports a study on the crystal growth and characterization of dibromobis (L-proline)Cd(II) (1). Many points of criticism, concerning the crystal structure of (1) and the magnetic properties of (1) dibromo bis(L-proline)Zn(II) (2) and diiodo bis(2-aminopyridine)Cd(II) (3) are reported to show that compounds 1 to ...
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The Computation of Cyclic Peptide with Prolin-Prolin Bond as Fusion Inhibitor of DENV Envelope Protein through Molecular Docking and Molecular Dynamics Simulation [PDF]
A disease that caused by dengue virus (DENV) has become the major health problem of the world. Nowadays, no effective treatment is available to overcome the disease due to the level of dengue virus pathogeneses. A novel treatment method such as antiviral drug is highly necessary for coping with the dengue disease.
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Analytical Rebridging Monte Carlo: Application to cis/trans Isomerization in Proline-Containing, Cyclic Peptides [PDF]
We present a new method, the analytical rebridging scheme, for Monte Carlo simulation of proline-containing, cyclic peptides. The cis/trans isomerization is accommodated by allowing for two states of the amide bond. We apply our method to five peptides that have been previously characterized by NMR methods.
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Colloidal stability of tannins: astringency, wine tasting and beyond [PDF]
Tannin-tannin and tannin-protein interactions in water-ethanol solvent mixtures are studied in the context of red wine tasting. While tannin self-aggregation is relevant for visual aspect of wine tasting (limpidity and related colloidal phenomena), tannin affinities for salivary proline-rich proteins is fundamental for a wide spectrum of organoleptic ...
arxiv +1 more source