Development of Peptide-Based Inhibitors of Amylin Aggregation Employing Aromatic and Electrostatic Repulsion

2018 ◽  
pp. 17-31 ◽  
Author(s):  
Adam A. Profit ◽  
Ruel Z. B. Desamero
Keyword(s):  
Electrostatic Repulsion

Spontaneous Formation of Giant Phospholipid Vesicles

1988 ◽  
Vol 43 (11-12) ◽  
pp. 938-947 ◽  
Author(s):  
Rolf-M. Servuss
Keyword(s):  
Aqueous Solution ◽  
Light Microscopy ◽  
Fluid Phase ◽  
Significant Part ◽  
Phospholipid Vesicles ◽  
Electrostatic Repulsion ◽  
Giant Vesicles ◽  
Spontaneous Formation

The spontaneous formation of giant (diameter > 10 μm) vesicles from a number of phospholipids in excess aqueous solution has been studied by light-microscopy. Electrically neutral as well as charged phospholipids swell to form giant vesicles only if the lipids are in the fluid phase. This shows that electrostatic repulsion alone cannot explain the spontaneous formation of giant vesicles. The results confirm the suggestion that steric forces between extended membranes play a significant part in this process.

Electrostatic repulsion strategy for highly selective and sensitive “switch–on” fluorescence sensor of ascorbic acid based on the cysteamine-coated CdTe quantum dots and cerium (IV)

2021 ◽  
Author(s):  
Yifei Guo ◽  
Jingjing Du ◽  
Jianjun Li ◽  
Ran Yang ◽  
Peter B. de Harrington ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ascorbic Acid ◽  
Hydrothermal Method ◽  
Cadmium Chloride ◽  
Fluorescence Sensor ◽  
Cdte Quantum Dots ◽  
Electrostatic Repulsion ◽  
Functional Monomer ◽  
Simple Hydrothermal Method ◽  
Cdte Qds

In this work, cysteamine-coated CdTe quantum dots (CA-CdTe QDs) were synthesized by a simple hydrothermal method employing cadmium chloride as the cadmium source and cysteamine hydrochloride as the functional monomer....

Engineering Electrostatic Repulsion of Metal Nanoparticles for Reduced Adsorption in Single-Impact Electrochemical Recordings

2021 ◽  
Author(s):  
Lennart J. K. Weiß ◽  
Emir Music ◽  
Philipp Rinklin ◽  
Lea Straumann ◽  
Leroy Grob ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Electrostatic Repulsion ◽  
Single Impact

Histidine-Mediated Intramolecular Electrostatic Repulsion for Controlling pH-Dependent Protein–Protein Interaction

2019 ◽  
Vol 14 (12) ◽  
pp. 2729-2736 ◽  
Author(s):  
Hideki Watanabe ◽  
Chuya Yoshida ◽  
Ayako Ooishi ◽  
Yasuto Nakai ◽  
Momoko Ueda ◽  
...  
Keyword(s):  
Protein Interaction ◽  
Electrostatic Repulsion ◽  
Protein Protein Interaction ◽  
Dependent Protein ◽  
Ph Dependent

scholarly journals EFFECT OF NONCLASSICAL POLARIZATION OF Na+ AND K+ ON THE STABILITY OF SOIL COLLOIDAL PARTICLES IN SUSPENSION

2017 ◽  
Vol 24 (07) ◽  
pp. 1850019
Author(s):  
DING WU-QUAN ◽  
HE JIA-HONG ◽  
WANG LEI ◽  
LIU XIN-MIN ◽  
LI HANG
Keyword(s):  
Negative Pressure ◽  
Colloidal Particles ◽  
Ion Concentration ◽  
Electrostatic Repulsion ◽  
Adjacent Soil ◽  
Net Pressure ◽  
The Stability ◽  
Two Stages ◽  
Soil Colloids ◽  
Total Average

The study of soil colloids is essential because the stability of soil colloidal particles are important processes of interest to researchers in environmental fields. The strong nonclassical polarization of the adsorbed cations (Na[Formula: see text] and K[Formula: see text] decreased the electric field and the electrostatic repulsion between adjacent colloidal particles. The decrease of the absolute values of surface potential was greater for K[Formula: see text] than for Na[Formula: see text]. The lower the concentration of Na[Formula: see text] and K[Formula: see text] in soil colloids, the greater the electrostatic repulsion between adjacent colloidal particles. The net pressure and the electrostatic repulsion was greater for Na[Formula: see text] than for K[Formula: see text] at the same ion concentration. For K[Formula: see text] and Na[Formula: see text] concentrations higher than 50[Formula: see text]mmol L[Formula: see text] or 100 mmol L[Formula: see text], there was a net negative (or attractive) pressure between two adjacent soil particles. The increasing total average aggregation (TAA) rate of soil colloids with increasing Na[Formula: see text] and K[Formula: see text] concentrations exhibited two stages: the growth rates of TAA increased rapidly at first and then increased slowly and eventually almost negligibly. The critical coagulation concentrations of soil colloids in Na[Formula: see text] and K[Formula: see text] were 91.6[Formula: see text]mmol L[Formula: see text] and 47.8[Formula: see text]mmol L[Formula: see text], respectively, and these were similar to the concentrations at the net negative pressure.

Substitutional and solvation effects on conformational equilibria. Effects on the interaction between opposing axial oxygen atoms

1969 ◽  
Vol 47 (23) ◽  
pp. 4441-4446 ◽  
Author(s):  
R. U. Lemieux ◽  
A. A. Pavia
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Hydrogen Bonding ◽  
Magnetic Resonance ◽  
Hydroxyl Groups ◽  
Evidence Based ◽  
Electrostatic Repulsion ◽  
Hydrogen Bridge ◽  
Conformational Equilibria ◽  
Free Hydroxyl ◽  
Oxygen Atoms

Evidence based both on nuclear magnetic resonance and rotation data primarily obtained from methyl 3-deoxy-β-L-erythro-pentopyranoside and a number of its derivatives is interpreted to show that the electrostatic repulsion between the oxygen atoms at the 2 and 4 positions is substantially less when these oxygens are linked to acyl groups than when in the form of either methyl ethers or as hydroxyl groups hydrogen bonded to solvent. Also, experimental evidence is presented which requires the hydrogen bridge between two axially disposed hydroxyl groups to be substantially strengthened by hydrogen bonding of the free hydroxyl by solvent.

An electrostatic repulsion strategy construct ZIFs based liquids with permanent porosity for efficient CO2 capture

2021 ◽  
pp. 119305
Author(s):  
Xiaoqian Li ◽  
Dechao Wang ◽  
Hailong Ning ◽  
Yangyang Xin ◽  
Zhongjie He ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Electrostatic Repulsion

Electrostatic repulsion-controlled regioselectivity in nitrene-mediated allylic C-H amidations

2021 ◽  
Author(s):  
Fang Huang ◽  
Xiaoxiao Tian ◽  
Fangao Hou ◽  
Yaping Xu ◽  
Gang Lu
Keyword(s):  
Electrostatic Repulsion ◽  
Rate Determining Step

The mechanism and origin of regioselectivity of nitrene-mediated allylic C–H amidations were computationally investigated. The allylic C-H activation via CMD mechanism represents the rate-determining step. The nitrene insertion step based...

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