News Column

Findings from Gwangju Institute of Science and Technology (GIST) in the Area of Peptides and Proteins Reported

June 3, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on Peptides and Proteins are discussed in a new report. According to news reporting from Kwangju, South Korea, by NewsRx journalists, research stated, "Gold nanoclusters (AuNCs) have gained interest during the recent years because of their low toxicity and finer size for the bioimaging and biolabeling applications in comparison to the semiconductor quantum dot analogues. Diverse materials such as sulfur compounds, peptides, dendrimers, proteins, etc., are exploited for the preparation of AuNCs."

The news correspondents obtained a quote from the research from the Gwangju Institute of Science and Technology (GIST), "Henceforth, highly fluorescent, water-soluble, and few atom-containing gold nanoclusters are created using a rapid, straightforward, and green method. In this regard for the first time chicken egg white (CEW), one of the most unique materials, is utilized in an aqueous solution under basic conditions at physiological temperature for the preparation of AuNCs. Tyrosine and tryptophan amino acid residues are responsible for the conversion of Au ions to Au under alkaline condtions. CEW contains four major proteins of which the main constituent protein, ovalbumin also leads to the formation of the AuNCs with a higher fluorescence emission compared to the CEW. The ratios between the different reaction partners are very crucial, along with temperature and time for the preparation of AuNCs with high photoluminescence emission."

According to the news reporters, the research concluded: "The limited vibrational motion of the proteins under alkaline condition and the bulkiness of the proteins help in the formation of AuNCs."

For more information on this research see: Synthesis of highly fluorescent gold nanoclusters using egg white proteins. Colloids and Surfaces B-Biointerfaces, 2014;115():46-50. Colloids and Surfaces B-Biointerfaces can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Peptides and Proteins).

Our news journalists report that additional information may be obtained by contacting D. Joseph, Gwangju Inst Sci & Technol, Dept. of Med Syst Engn, Kwangju 500712, South Korea.

Keywords for this news article include: Asia, Kwangju, South Korea, Amino Acids, Peptides and Proteins

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

For more stories covering the world of technology, please see HispanicBusiness' Tech Channel

Source: Life Science Weekly

Story Tools Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters