Induction of Secondary Structure through Micellization of an Oppositely Charged Pair of Homochiral Block- and Homopolypeptides in an Aqueous Medium

2015 ◽  
Vol 36 (22) ◽  
pp. 1958-1964 ◽  
Author(s):  
Omer F. Mutaf ◽  
Akihiro Kishimura ◽  
Yuki Mochida ◽  
Ahram Kim ◽  
Kazunori Kataoka
Keyword(s):  
Secondary Structure ◽  
Aqueous Medium ◽  
Charged Pair ◽  
Oppositely Charged

Effects of Peptide Secondary Structure on the Interaction with Oppositely Charged Microgels

2011 ◽  
Vol 12 (2) ◽  
pp. 419-424 ◽  
Author(s):  
Ronja Månsson ◽  
Helena Bysell ◽  
Per Hansson ◽  
Artur Schmidtchen ◽  
Martin Malmsten
Keyword(s):  
Secondary Structure ◽  
Peptide Secondary Structure ◽  
Oppositely Charged

Ionic liquid-induced all-α to α + β conformational transition in cytochrome c with improved peroxidase activity in aqueous medium

2015 ◽  
Vol 17 (15) ◽  
pp. 10189-10199 ◽  
Author(s):  
Pankaj Bharmoria ◽  
Tushar J. Trivedi ◽  
Ashok Pabbathi ◽  
Anunay Samanta ◽  
Arvind Kumar
Keyword(s):  
Ionic Liquid ◽  
Secondary Structure ◽  
Cytochrome C ◽  
Aqueous Medium ◽  
Peroxidase Activity ◽  
Conformational Transition ◽  
Surface Active Ionic Liquid ◽  
Surface Active

Choline dioctylsulfosuccinate [Cho][AOT] (a surface active ionic liquid) has been found to induce all-α to α + β conformational transition in the secondary structure of enzyme cytochrome c (Cyt c) with an enhanced peroxidase activity in its aqueous vesicular phase at pH 7.0.

Interaction of a Cationic Surfactant with an Oppositely Charged Polymer

2017 ◽  
Vol 32 (3-4) ◽  
pp. 107 ◽  
Author(s):  
Soumen Ghosh ◽  
Arpan Mal ◽  
Tanushree Chakraborty ◽  
Gobinda Chandra De ◽  
Daniel Gerrard Marangoni
Keyword(s):  
Aqueous Medium ◽  
Cationic Surfactant ◽  
Carboxymethyl Cellulose ◽  
Hydrophobic Interactions ◽  
Dodecyltrimethylammonium Bromide ◽  
Behavioural Pattern ◽  
Anionic Sites ◽  
Anionic Polymer ◽  
Electrostatic And Hydrophobic Interactions ◽  
Oppositely Charged

The interactions between the cationic surfactant Dodecyltrimethylammonium Bromide (DTAB) and anionic polymer sodium carboxymethyl cellulose (Na-CMC) in aqueous medium were studied at 300K over different concentrations of Na-CMC by tensiometry, conductometry, viscometry, turbidimetry and fluorimetry. Aggregation of surfactant was attained in two steps, the first being the monomeric adsorption of surfactants on anionic sites of the polymer saturating at lower concentrations of surfactant and the second one being the formation of micelles by surfactants at higher concentrations. Mainly, two types of interactions prevailed throughout namely, electrostatic and hydrophobic interactions. Due to the variation of the interactions depending on the concentrations of polymer, there has been considerable differences in the behavioural pattern of the profiles for the lower concentrations of polymer compared to that of the upper ones.

Characterization of Tamm-Horsfall Urinary Glycoprotein

1973 ◽  
Vol 31 ◽  
pp. 420-421
Author(s):  
John P. Robinson ◽  
J. David Puett
Keyword(s):  
Electron Microscopy ◽  
Circular Dichroism ◽  
Secondary Structure ◽  
Quaternary Structure ◽  
Normal Adult ◽  
Morphological Properties ◽  
Adult Males ◽  
Circular Dichroïsm ◽  
Urinary Glycoprotein

Much work has been reported on the chemical, physical and morphological properties of urinary Tamm-Horsfall glycoprotein (THG). Although it was once reported that cystic fibrotic (CF) individuals had a defective THG, more recent data indicate that THG and CF-THG are similar if not identical.No studies on the conformational aspects have been reported on this glycoprotein using circular dichroism (CD). We examined the secondary structure of THG and derivatives under various conditions and have correlated these results with quaternary structure using electron microscopy.THG was prepared from normal adult males and CF-THG from a 16-year old CF female by the method of Tamm and Horsfall. CF female by the method of Tamm and Horsfall.

Rheological behaviour of the condensed suspension of fluorinated montmorillonite “rassoul” particles in aqueous medium

2005 ◽  
Vol 123 ◽  
pp. 341-344
Author(s):  
A. Khaldoun ◽  
F. González-Caballero ◽  
J. G. López-Durán ◽  
N. Mahrach ◽  
M. L. Kerkeb
Keyword(s):  
Aqueous Medium ◽  
Rheological Behaviour

Changes of Magnetic Characteristics of iron Oxides and Hydroxides in Aqueous Medium

2017 ◽  
Vol 39 (1) ◽  
pp. 46-52
Author(s):  
T. SAVCHENKO ◽  
◽  
A. GRECHANOVSKY ◽  
A. BRIK ◽  
N. DUDCHENKO
Keyword(s):  
Aqueous Medium ◽  
Iron Oxides ◽  
Magnetic Characteristics
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