【摘 要】
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Self-assembly of peptides into fibrils and other morphologies has attracted much attention in many fields, especially in nanofabrication, pathology and biochemi
【机 构】
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Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China“,”Graduat
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Self-assembly of peptides into fibrils and other morphologies has attracted much attention in many fields, especially in nanofabrication, pathology and biochemistry. In this paper, self-assembly of GAV-9 peptide in organic solvents, ethanol and acetone, was investigated using atomic force microscopy (AFM)and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). The results indicated that GAV-9 self- assembled into various nanostructures in both solvents after deposited and evaporated on mica. Fibrils with β-sheet conformation were observed in both solvents when the peptide concentration was higher than 280 μM. However, ordered fibrils with β-sheet conformation were formed in ethanol, but not in acetone, with a peptide concentration ranging from 7 μM to 28 μM. We attribute the formation of various nanostructures to the different physicochemical properties of the polar organic solvents on the self-assembly of GAV-9 peptide.
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