Thermodynamic and aggregation properties of sodium dodecyl sulfate in aqueous binary mixtures of isomeric butanediols

Refolding SDS-Denatured Proteins by the Addition of Amphipathic Cosolvents

“…Small lipophilic mono-and di-alcohols lower the critical micellar concentration of SDS, reduce the aggregation number and decrease the surface charge density of the SDS micelles. [44][45][46][47] It is likely that this reduction in the micellar charge density contributes to the reduction of the harsh protein-denaturing properties of SDS/alcohol micelles relative to that of pure SDS micelles. In this respect, it is notable that the polypeptide chain in SDS-denatured proteins have been shown to interact mainly in the headgroup region of SDS micelles, [13][14][15] and we propose that the effects described here are due, in part, to competitive effects between the amphipathic alcohols and peptides for similar binding sites in the headgroup region of SDS micelles.…”

An insight into the micellization of dodecyldimethylethylammonium bromide (DDAB) in the presence of bovine serum albumin (BSA)

“…(21) From the values of G 0 pr shown in Table 2, it is evident that the formation of DDAB/BSA aggregates at the cac is a thermodynamically favorable process since the values of G 0 pr obtained are negative. Further, the following equation has been used to demonstrate the effect of additive on the micelle formation by means of standard energy of transfer of micelle from water to water-additive phase…”

“…The I 3 /I 1 ratio is related to the micropolarity of the microenvironment in which pyrene is solubilized, therefore, its variation indicates a change in hydrophobic environment with respect to composition [21]. The I 3 /I 1 ratios of pyrene fluorescence as a function of concentration of DDAB with and without BSA have been shown in Fig.…”

Studies on the Effect of Amino Acids/Peptide on Micellization of SDS at Different Temperatures

“…Although numerous studies on the effects of additives of varied natures on micellization have been reported in the literature [17,[19][20][21][22][23][24][25][26], relatively very few studies are available on the effect of amino acids/peptide on the micellization of SDS at different temperatures. The conductometric technique has been found to be highly useful for studying the solution behavior of various systems, including surfactants [6,20,25,[27][28][29][30].…”