Abstract
We have developed a method for rapid activity staining of proteins with glutathione peroxidase (GPx) activity after 2-D gel electrophoresis. After separating proteins extracted from yeast, or mouse red blood cells, by two-dimensional gel electrophoresis, SDS was removed and the gel was submerged in a Tris-HCl buffer containing glutathione and hydrogen peroxide, followed by incubation with 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and phenazine methosulfate (PMS). After this proteins with GPx activity appeared as clear zones on a purple background. This relatively simple activity staining method could be useful for rapid screening of proteins with GPx activity in cell extracts.
Original language | English |
---|---|
Pages (from-to) | 369-373 |
Number of pages | 5 |
Journal | Molecules and cells |
Volume | 18 |
Issue number | 3 |
Publication status | Published - 2004 Dec 31 |
Keywords
- 2-D gel
- Activity staining
- Glutathione
- Glutathione peroxidase
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology