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In this article, we present the use of micron-sized lipid domains, patterned onto planar substrates and within microfluidic channels, to assay the binding of bacterial toxins via total internal reflection fluorescence microscopy. The lipid domains were patterned using a polymer lift-off technique and consisted of ganglioside-populated distearoylphosphatidylcholine:cholesterol supported lipid bilayers...
Photoelectroactivity of oriented purple membrane layers attached to an ion exchange film has been investigated. The action spectrum of the photocurrent followed the absorption spectrum of bacteriorhodopsin. The intactness of structure and function of bacteriorhodopsin was demonstrated by studies of absorption and photocycle kinetics. The direction of the photocurrent suggests that the extracellular...
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