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The periplasmic protein FepB of Escherichia coli is a component of the ferric enterobactin transport system. We overexpressed and purified the binding protein 23-fold from periplasmic extracts by ammonium sulfate precipitation and chromatographic methods, with a yield of 20%, to a final specific activity of 15,500 pmol of ferric enterobactin bound/mg.(More)
Synaptosome-associated protein of 25 kDa (SNAP-25) is a neuronal membrane protein essential for synaptic vesicle exocytosis. To investigate the mechanisms by which SNAP-25 mediates neurosecretion, we performed a search for proteins that interact with SNAP-25 using a yeast two-hybrid screen. Here, we report the isolation and characterization of a(More)
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