Colloids and surfaces. B, Biointerfaces.Colloids Surf B Biointerfaces.2016 Apr 1;140:548-59. doi: 10.1016/j.colsurfb.2015.11.023. Epub 2015 Nov 17.
Motivated by diverse biological and pharmacological activity of quinuclidine and oxime compounds we have synthesized and characterized novel class of surfactants, 3-hydroxyimino quinuclidinium bromides with different alkyl chains lengths (CnQNOH; n=12, 14 and 16). The incorporation of non convention
Modulating self-assembly behavior of a salt-free peptide amphiphile (PA) and zwitterionic surfactant mixed system.
Zhang H1, Sun J1, Xin X2, Xu W1, Shen J1, Song Z3, Yuan S4.
Journal of colloid and interface science.J Colloid Interface Sci.2016 Apr 1;467:43-50. doi: 10.1016/j.jcis.2015.12.005. Epub 2015 Dec 30.
A salt-free surfactant system formed by a peptide amphiphile with short headgroup (PA,C16-GK-3) and a zwitterionic surfactant (dodecyldimethylamine oxide, C12DMAO) in water has been systematically investigated. The microstructures and properties of C16-GK-3/C12DMAO mixed system were characterized us
Evidence for a Helix-Clutch Mechanism of Transmembrane Signaling in a Bacterial Chemoreceptor.
Ames P1, Hunter S1, Parkinson JS2.
Journal of molecular biology.J Mol Biol.2016 Mar 24. pii: S0022-2836(16)00203-5. doi: 10.1016/j.jmb.2016.03.017. [Epub ahead of print]
The Escherichia coli Tsr protein contains a periplasmic serine-binding domain that transmits ligand occupancy information to a cytoplasmic kinase-control domain to regulate the cell's flagellar motors. The Tsr input and output domains communicate through sequential conformational changes transmitted
… We found that the addition of a calix[4]arene derivative (CaL[4]C3) bearing four amine groups as headgroup to the DLPC multi-lamellar vesicle induced the structural transformation to a single-lamellar vesicle by use of small angle X-ray scattering and electron microscopy, indicating that the highly condensed ionic groups of CaL[4]C3 are useful to controls the membrane morphology. …
Monolayer Behavior of Cyclic and Linear Forms of Surfactins: Thermodynamic Analysis of Langmuir Monolayers and AFM Study of Langmuir-Blodgett Monolayers
… Our results clearly demonstrated that the cleavage of the cyclic heptapeptide headgroup of CSF drastically changes its molecular packing state in a monolayer and that AFM observation combined with the Langmuir monolayer technique is quite useful to explore the manner of self-assembly of a binary system of microbial products such as CSFs and LSFs. …
… Cationic gemini surfactants having a quaternary ammonium headgroup have been synthesized from oleic acid. … The hydrocarbon chain is covalently bound to the terminal carbonyl group of oleic acid via an amide bond, while the quaternary ammonium headgroup is introduced onto the cis double bond of oleic acid. …
headgroup (plural headgroups) (organic chemistry) A bulky part of a molecule, often containing one or more functional groups, attached to a relatively long aliphatic tail or backbone Retrieved from "https://en.wiktionary.org/w/index" ...