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Surface mixing of products and substrate of PLA2 in enzyme-free mixed monolayers reproduces enzyme-driven structural topography
(Elsevier Science, 2013-05)
It was proposed that topographic changes in lipid monolayers hydrolyzed by lipolytic enzymes such as Phospholipase A2 (PLA2) are a consequence of enzyme activity at the surface. Lateral packing defects that arise from lipid ...
Ca2+- and Mg2+-induced molecular interactions in a dehydrocholic acid/didodecyldimethylammonium bromide mixed monolayer
(Springer, 2010-02)
The aim of this article is the evaluation of Ca2+ and Mg 2+ subphases presence effect on mixed monolayers composed by dehydrocholic acid (HDHC) and didodecyldimethylammonium bromide (DDAB). The monolayer stability was ...
Rat osseous plate alkaline phosphatase as Langmuir monolayer - An infrared study at the air-water interface
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2008)
A glycosylphosphatidylinositol (GPI)-anchored enzyme (rat osseous plate alkaline phosphatase-OAP) was studied as monolayer (pure and mixed with lipids) at the air-water interface. Surface pressure and surface potential-area ...
Phase diagram of mixed monolayers of stearic acid and dimyristoylphosphatidylcholine. Effect of the acid ionization
(Elsevier Ireland, 2011-07)
The aim of this work is to study the phase diagram of mixed monolayers composed of dimyristoylphosphatidylcholine (DMPC) and stearic acid (SA) at different ionic strength and bulk pH of the aqueous subphase. In this way, ...
Modulation of the domain topography of biphasic monolayers of stearic acid and dimyristoyl phosphatidylcholine
(Elsevier Ireland, 2012-02)
The phase diagram of mixed monolayers composed of dimyristoyl phosphatidylcholine (DMPC) and stearic acid (SA) on different subphases was previously reported. It was observed that on acid subphases, liquid-condensed domains ...
Stiffness of lipid monolayers with phase coexistence
(American Chemical Society, 2013-08)
The surface dilational modulus (or compressibility modulus) has been previously studied for monolayers composed of pure materials, where a jump in this modulus was related with the onset of percolation as a result of the ...
Microelectrode array in mixed alkanethiol self-assembled monolayers: Electrochemical studies
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
We report an efficient alternative to obtain recessed microelectrodes device on gold electrode surface, in which mixed self-assembled monolayer of long and short carbon alkanethiol chains was used for this purpose. Development ...
Interaction of horseradish peroxidase with Langmuir monolayers of phospholipids
(ELSEVIER SCIENCE BV, 2008)
The method employed to incorporate guest molecules onto phospholipid Langmuir monolayers plays an important role in the interaction between the monolayer and the guest molecules. In this paper, we show that for the interaction ...
Interfacial stabilization of the antitumoral drug Paclitaxel in monolayers of GM1 and GD1a gangliosides
(Elsevier Science, 2015-06)
Molecular interactions between the anti-cancer agent Paclitaxel (Ptx), and two gangliosides with different sialic acid content, GM1 and GD1a, were investigated using the Langmuir film balance technique. Ptx showed interfacial ...
Structure and electronic and charge-transfer properties of mercaptobenzoic acid and mercaptobenzoic acid-undecanethiol mixed monolayers on AU(111)
(American Chemical Society, 2014-12)
The surface structure, molecular conductance, and charge-transfer properties of pure mercaptobenzoic acid (MBA) and mixed MBA?undecanethiol (UDT) self-assembled monolayers (SAMs) on Au(111) are studied by scanning tunneling ...