期刊
ANALYTICAL BIOCHEMISTRY
卷 406, 期 1, 页码 86-88出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ab.2010.06.035
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资金
- Grants-in-Aid for Scientific Research [22580226] Funding Source: KAKEN
Coomassie Brilliant Blue (CBB) protein stains are inexpensive but detect proteins at only at microgram levels. Because of acetic acid and methanol, they cause skin irritation and reduce work motivation by malodor. Recent mass spectrometric (MS) analyses demonstrated that nanogram-sensitive colloidal CBB staining resulted in in vitro methylations of proteins. We propose a rapid, inexpensive, sensitive, odorless, less harsh, and in vitro methylation-free CBB stain. CGP uses three components: citric acid, CBB G-250, and polyvinylpyrrolidone. CGP detects proteins at 12 ng within 45 min, and because it is non-alcohol, in principle in vitro methylation would be eliminated. Indeed, MS analysis of CGP-stained bands confirmed a lack of methylation. (C) 2010 Elsevier Inc. All rights reserved.
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