Monomolecular organization of the main tetraether lipid from Thermoplasma acidophilum at the water–air interface

Bakowsky, Udo; Rothe, Ulrich; Antonopoulos, E; Martini, T.; Henkel, L.; Freisleben, Hans-Joachim

doi:10.1016/s0009-3084(99)00131-0

Cited by 55 publications

(54 citation statements)

References 22 publications

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“…Langmuir film of GDNT after standing for 15 hours is more stable than the Langmuir film after standing for 1 hour. Bakowsky et al (2008) [11] also showed that TEL-organization at the air-water interface is strongly dependent on the spreading time and the lateral surface pressure. For poorly stable monolayers, continuous changes of the hysteresis loops towards lower mean molecular areas are observed in isotherms, respectively.…”

Section: S Vidawati Et Al / Advances In Biological Chemistrymentioning

confidence: 98%

“…Floating monolayer stability is an important parameter in obtaining very high-quality Langmuir-Blodgett films. Although, efforts were made to obtain high-quality Langmuir-Blodget films of tetraether lipids [7,[9][10][11][13][14][15][16]. Langmuir-Blodget of tetraether lipid films depends on many parameters such as substrate surface properties (hydrophobic, hydrophilic, aminosilanised) [10], temperature, sub-phase, etc.…”

Section: S Vidawati Et Al / Advances In Biological Chemistrymentioning

confidence: 99%

“…According Bakowsky et al (2000) [11], the organization tetraether lipids Langmuir films at the air-water interface strongly depends on the spreading time and lateral surface pressure. Floating monolayer stability is a crucial parameter to obtain high-quality Langmuir-Blodgett films.…”

Section: Introductionmentioning

confidence: 99%

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Langmuir films stability phenomenon of glycerol dialkyl nonitol tetraether at the air-water interface for variations spreading time

Vidawati

Bakowsky²,

Rothe³

2012

ABC

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Langmuir films behavior of asymmetric glycerol dialkyl nonitol tetraether (GDNT) lipids at the air-water interface (temperature 19˚C ± 1˚C) investigated the stability of the mean ratio of Langmuir films for different spreading time prior to the transfer film. Floating monolayer films stability is an important parameter to obtain high-quality Langmuir-Blodgett films for their aplications. Hysteresis loop of the compression-decompression (μ-A) isotherms of Langmuir film GDNT used to analyze the thermodynamic stability of the monolayer films and its features. Langmuir films stability of tetraether lipid GDNT shown more stable at the time of spreading longer than a short time.

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Section: S Vidawati Et Al / Advances In Biological Chemistrymentioning

confidence: 98%

Section: S Vidawati Et Al / Advances In Biological Chemistrymentioning

confidence: 99%

See 1 more Smart Citation

Langmuir films stability phenomenon of glycerol dialkyl nonitol tetraether at the air-water interface for variations spreading time

Vidawati

Bakowsky²,

Rothe³

2012

ABC

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“…However, a disadvantage is that tetraether lipids may adopt instead an upright conformation (figure 3b (1)), an unstable so-called U-shaped (bent) conformation at the air/water interphase where both hydrophilic head groups interact with the aqueous subphase (figure 3b (2)) [64,67,68]. Thus, films comprising tetraether lipids may not be stable in terms of maintaining the adjusted surface pressure over time as permanent rearrangement of the lipid molecules occurs [62,69,70]. Owing to their amphiphilic nature, ether-and phospholipids can nicely be self-assembled at the air/water interphase with the hydrocarbon chains pointing towards the air and the polar head groups facing the aqueous phase (figure 3b(3)) [71,72].…”

Section: Lipidsmentioning

confidence: 99%

Biomimetic interfaces based on S-layer proteins, lipid membranes and functional biomolecules

Schuster

Sleytr

2014

J. R. Soc. Interface.

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Designing and utilization of biomimetic membrane systems generated by bottom-up processes is a rapidly growing scientific and engineering field. Elucidation of the supramolecular construction principle of archaeal cell envelopes composed of S-layer stabilized lipid membranes led to new strategies for generating highly stable functional lipid membranes at mesoand macroscopic scale. In this review, we provide a state-of-the-art survey of how S-layer proteins, lipids and polymers may be used as basic building blocks for the assembly of S-layer-supported lipid membranes. These biomimetic membrane systems are distinguished by a nanopatterned fluidity, enhanced stability and longevity and, thus, provide a dedicated reconstitution matrix for membrane-active peptides and transmembrane proteins. Exciting areas in the (lab-on-a-) biochip technology are combining composite S-layer membrane systems involving specific membrane functions with the silicon world. Thus, it might become possible to create artificial noses or tongues, where many receptor proteins have to be exposed and read out simultaneously. Moreover, S-layer-coated liposomes and emulsomes copying virus envelopes constitute promising nanoformulations for the production of novel targeting, delivery, encapsulation and imaging systems.

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“…Similar observations were reported by Bakowsky et al for T-MPL at the air-water interface. 17 Their ellipsometry and results on Langmuir-Blodgett films can only be explained if the T-MPL molecules (partially) adopt a U-shaped conformation. Since there is no hydrophilic (water)-hydrophobic (air) interface during vesicle formation in an aqueous environment, both head groups of the bolaform lipid can be in contact with the aqueous surrounding when the lipid adopts an extended (unbent) conformation.…”

Section: Monolayer Formation and Thicknessmentioning

confidence: 99%

Biomimetic surface modification with bolaamphiphilic archaeal tetraether lipids via liposome spreading

et al. 2014

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Through investigations of the self-assembly behavior of three different tetraether lipids, the authors successfully established a solid supported, biomimetic tetraether lipid membrane via liposome spreading. These bolaamphiphilic lipids are the main compound in membranes of archaea, extremophile microorganisms, which underwent an enormous adaptation to extreme conditions in their natural environment with regard to temperature, pH, and high salt concentrations. Starting from a mathematical point of view, the authors calculated hydrophilic–lipophilic balance values for each lipid and recognized a wide difference in self-assembly potentials relying on size and hydrophilic properties of the lipid head groups. These results were in good accordance with data generated by lipid experiments at the air–water interface applying a Langmuir–Blodgett film balance so that the self-assembly potential of two different tetraether lipids was found to be sufficient to form stable liposomes in aqueous media. Liposomes composed of the main phospholipid of the archaea strain Sulfolobus acidocaldarius fused covalently on silanized glass substrates and formed a monomolecular lipid layer with upright standing molecules at film consistent thicknesses of approximately 5 nm determined by ellipsometry and atomic force microscopy. This work can be considered as a basic strategy to find optimized lipid properties in terms of liposome formation and spreading in water, and it is the first report about archaeal liposome fusing on surfaces to establish a solid supported lipid monolayer.

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Monomolecular organization of the main tetraether lipid from Thermoplasma acidophilum at the water–air interface

Cited by 55 publications

References 22 publications

Langmuir films stability phenomenon of glycerol dialkyl nonitol tetraether at the air-water interface for variations spreading time

Langmuir films stability phenomenon of glycerol dialkyl nonitol tetraether at the air-water interface for variations spreading time

Biomimetic interfaces based on S-layer proteins, lipid membranes and functional biomolecules

Biomimetic surface modification with bolaamphiphilic archaeal tetraether lipids via liposome spreading

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