Sunlight mediated disruption of peptide-based soft structures decorated with gold nanoparticles
作者:Apurba Kr. Barman、Sandeep Verma
DOI:10.1039/c0cc02604b
日期:——
This communication reports morphological studies of a novel C3-symmetric thiolated, tren-based ditryptophan conjugate. The exposed thiol groups on the soft structures interacted with gold nanoparticles and mediated the release of encapsulated fluorescent dye, when exposed to natural sunlight.
differed between the studied peptides. While the destruction activity of the compounds on the HEW lysozyme amyloid fibrils was negligible, the effect on Aβ40 amyloid fibrils was significantly higher. Furanoid sugar α-aminoacid 1 and its dipeptide derivatives 8 (Trp-Trp) and 11 (Trp-Tyr) were the most potent anti-Aβ fibrils compounds. The antioxidant properties of synthesized compounds were estimated
The synthesis of ditryptophan-pyridine conjugates and their binding to mercury ions is described. Conjugate 3 shows an excellent ability to sequester mercury from solution and rescue bacterial growth in a concentration-dependent survival assay. It is proposed that such compounds, composed primarily of bioessential/biodegradable components, could be potentially used as sequestrating agents for the removal of Hg(II) ions in detoxification strategies. (C) 2010 Elsevier Ltd. All rights reserved.
Ground and excited state conformational differences between diastereomeric dipeptides
作者:Chieu D. Tran、Godfrey S. Beddard、Rose McConnell、Charles F. Hoyng、Janos H. Fendler