Structural changes of phospholipid monolayers caused by coupling of human serum albumin: A GIXD study at the air/water interface

Article Abstract:

Phase behavior and structural changes were studied for phospholipid monolayers coupled with human serum albumin (HSA) at the air/buffer (pH3.8) interface by film balance and grazing incidence X-ray diffraction (GIXD) measurements. For comparison, the lipid headgroup was varied from small ionic L-alpha-dipalmitoyl-phosphatidic acid (DPPA) to large ionic L-alpha-dipalmitoyl-phosphatidyl-L-serine (DPPS) and zwitterionic L-alpha-distearoyl-phosphatidylcholine (DSPC).

Biological Product (except Diagnostic) Manufacturing, Biological products exc. diagnostic, Blood Albumin, Methods, Phospholipids, Serum albumin

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Stability and structures of liquid crystalline phases formed by branched-chain phospholipid diastereomers

Article Abstract:

The Diastereomers of 1-alkyl-2-acylglycerophosphocholines contaioning 2-methyl-branched fatty acids at the C2 position of the glycerol are synthesized. Pressure area isotherms and grazing incidence X-ray diffraction (GIXD) measurements were employed for studying the physicochemical properties in monolayers at the air-water interface.

Usage, Chemistry, Physical and theoretical, Physical chemistry, Structure, Diastereomers

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Investigation of the protonation state of novel cationic lipids designed for gene transfection

Article Abstract:

The protonation properties of Langmuir monolayer of the newly synthesized cationic lipids were determined in wide range of pH. The complexes represented as monoamines or oligoamines could be used in versatile DNA delivery system.

Lipid membranes, Hydrogen-ion concentration, Genetic transformation, Atomic properties, pH

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