NMR investigation of the electrostatic effect in binding of a neuropeptide, achatin-I, to phosphatidylcholine bilayers

Article Abstract:

The electrostatic effect of the N-terminal N[H.sub.3.sup.+] on the binding of a neuropeptide, achatin-I, to zwitterionic phosphatidylcholine (PC) bilayers is investigated. The results have shown that the ionization state of the N-terminal N[H.sub.3.sup.+] has controlled the electrostatic effect of the side chain [beta]-C[O.sub.2.sup.-] in Asp4 floats achatin-I on the PC membrane surface and the binding equilibrium.

Usage, Nuclear magnetic resonance, Neuropeptides, Electrostatic apparatus and appliances, Electrostatic devices

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Time-resolved investigations of singlet oxygen luminescence in water, in phosphatidylcholine, and in aqueous suspensions of phosphatidylcholine or HT29 cells

Article Abstract:

Singlet oxygen is generated by energy transfer from the photoexcited sensitizer, photofrin or 9-acetoxy-2,7,12,17-tetrakis-(beta-methoxyenthyl)-porphycene. The findings indicate that the measured luminescence decay time of singlet oxygen is shorter than in the case of photofrin but longer than in water.

Germany, Choline, Active oxygen

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ZnO well-faceted fibers with periodic junctions

Article Abstract:

ZnO well-faceted microfibers with periodic junctions were prepared by an evaporation and deposition process. A study on the photoluminescence (PL) and PL microscopy fibers showed that it could serve as microscale waveguides and emit enhanced green lights at the junctions under UV excitation.

Electric properties, Waveguides, Zinc oxide, Junction transistors

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