Microscopic Evidence for the Correlation of Micellar Structures and Counterion Binding Constant for Flexible Nanoparticle Catalyzed Piperidinolysis of PS− in Colloidal System

2017 ◽  
Vol 54 (3) ◽  
pp. 224-229
Author(s):  
Khalisanni Khalid ◽  
Sharifuddin Md. Zain ◽  
Vicit Rizal Eh Suk ◽  
M. Niyaz Khan
Keyword(s):  
Binding Constant ◽  
Colloidal System ◽  
Counterion Binding ◽  
Microscopic Evidence ◽  
Counterion Binding Constant

Effects of cationic nanoparticles (CNP) on counterion binding constant (RXBr) and catalytic constant (kcat) in micellar system

2016 ◽  
Vol 423 ◽  
pp. 365-370 ◽  
Author(s):  
Khalisanni Khalid ◽  
Muhammad Azri Mohd Noh ◽  
Ibrahim Isah Fagge ◽  
Sharifuddin Md. Zain ◽  
M. Niyaz Khan
Keyword(s):  
Binding Constant ◽  
Micellar System ◽  
Counterion Binding ◽  
Catalytic Constant ◽  
Cationic Nanoparticles ◽  
Counterion Binding Constant

Determination of Relative Counterion Binding Constant to Cationic Micelles

2017 ◽  
Vol 375 (2) ◽  
Author(s):  
Khalisanni Khalid ◽  
Muhammad Azri Mohd Noh ◽  
Sharifuddin Md. Zain ◽  
M. Niyaz Khan
Keyword(s):  
Binding Constant ◽  
Counterion Binding ◽  
Cationic Micelles ◽  
Counterion Binding Constant

scholarly journals Temperature Dependence of Micellization Properties of Binary Mixtures of Sodium Decylsulphate with Sodium Dodecylsulphate in Water

2020 ◽  
Vol 32 (10) ◽  
pp. 2529-2534
Author(s):  
O.G. Singh
Keyword(s):  
Binary Mixtures ◽  
Measurement Method ◽  
Surfactant Mixtures ◽  
Sodium Dodecylsulphate ◽  
Conductance Measurement ◽  
Counterion Binding ◽  
Mixed Micellization ◽  
Different Temperatures ◽  
S Model ◽  
Counterion Binding Constant

Conductance measurement method has been used to determine the critical micelle concentration (CMC) and counterion binding constant values of binary mixtures of sodium decylsulphate (SDeS) with sodium dodecylsulphate (SDS) in water at four different temperatures ranging from 298 K to 313 K at 5 K intervals. Rubingh′s model has been used to calculate the mixed micellization properties viz. mixed micelle composition, activity coefficient of the components, and mutual interaction parameter between the components. Variation of these mixed micellization properties with temperature has been studied. The studied binary surfactant mixtures show attractive interaction between the components and it decreases with increase in temperature, which is an interesting trend. Thermodynamic parameters of mixed micellization have also been calculated. The enthalpy (ΔH°mic) and entropy (ΔS°mic) of micellization compensate each other.

Formation and Structure of Casein Micelles in Lactating Mammary Tissue

1970 ◽  
Vol 28 ◽  
pp. 150-151
Author(s):  
Robert J. Carroll ◽  
Marvin P. Thompson ◽  
Harold M. Farrell
Keyword(s):  
Size Distribution ◽  
G Protein ◽  
Milk Proteins ◽  
Mammary Tissue ◽  
Colloidal System ◽  
Casein Micelles ◽  
The Stability

Milk is an unusually stable colloidal system; the stability of this system is due primarily to the formation of micelles by the major milk proteins, the caseins. Numerous models for the structure of casein micelles have been proposed; these models have been formulated on the basis of in vitro studies. Synthetic casein micelles (i.e., those formed by mixing the purified αsl- and k-caseins with Ca2+ in appropriate ratios) are dissimilar to those from freshly-drawn milks in (i) size distribution, (ii) ratio of Ca/P, and (iii) solvation (g. water/g. protein). Evidently, in vivo organization of the caseins into the micellar form occurs in-a manner which is not identical to the in vitro mode of formation.

An adrenocortical oncocytoma with unusual mitochondrial inclusions and cytoplasmic crystals

1994 ◽  
Vol 52 ◽  
pp. 250-251
Author(s):  
W.T. Gunning ◽  
G.D. Haselhuhn ◽  
E.R. Phillips ◽  
S.H. Selman
Keyword(s):  
Adrenal Gland ◽  
Salivary Glands ◽  
Mitotic Activity ◽  
Diagnostic Criteria ◽  
Vascular Invasion ◽  
Benign Neoplasm ◽  
Benign Tumors ◽  
Nuclear Morphology ◽  
Case Presentation ◽  
Microscopic Evidence

Within the last few years, adrenal cortical tumors with features concordant with the diagnostic criteria attributed to oncocytomas have been reported. To date, only nine reported cases exist in the literature. This report is the tenth case presentation of a presumptively benign neoplasm of the adrenal gland with a rare differentiation. Oncocytomas are well recognized benign tumors of the thyroid, parathyroid, and salivary glands and of the kidney. Other organs also give rise to these types of tumors, however with less frequency than the former sites. The characteristics generally used to classify a tumor as an oncocytoma include the following criteria: the tumor is 1) usually a solitary circumscribed mass with no gross nor microscopic evidence of metastasis (no tissue nor vascular invasion), 2) fairly bland in terms of mitotic activity and nuclear morphology, and 3) composed of large eosinophillic cells in which the cytoplasm is packed full of mitochondria (Figure 1).

scholarly journals A study of the binding between radicicol and four proteins by means of spectroscopy and molecular docking

2021 ◽  
pp. 174751982199306
Author(s):  
Ya Gan ◽  
Ning Bai ◽  
Xitong Li ◽  
Shuiting Gao ◽  
Ruiyong Wang
Keyword(s):  
Molecular Docking ◽  
Human Serum ◽  
Serum Protein ◽  
Binding Constant ◽  
Inhibitory Effect ◽  
Experimental Results ◽  
Static Quenching ◽  
Spectroscopic Techniques ◽  
Quenching Process ◽  
Human Serum Protein

The interactions between radicicol and four proteins (catalase, trypsin, pepsin, and human serum protein) are investigated by spectroscopic techniques and molecular docking. A static quenching process is confirmed. The binding constant value between radicicol and human serum protein is the largest among the four proteins. Results reveal changes in the micro-environment of the protein by the addition of radicicol. It is found that radicicol shows an inhibitory effect on the activity of proteins (catalase, trypsin, and pepsin). Molecular docking results are consistent with the thermodynamic experimental results. This work provides clues to the elucidation of the mechanisms of the interactions between radicicol and proteins.

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