Examination of membrane protein expression in Paracoccus denitrificans by two-dimensional gel electrophoresis
✍ Scribed by Pavel Bouchal; Igor Kučera
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 422 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0233-111X
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✦ Synopsis
The well-known metabolic versatility of the soil bacterium Paracoccus denitrificans poses a challenge for modern proteomic approaches. We describe here improved preparation conditions that allow good separation and quantitative analyses of hundreds of membrane or periplasmic proteins. To illustrate this optimized procedure, the results of a screening for membrane proteins associated predominantly with aerobic or anaerobic (denitrifying) modes of growth are presented.
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Two-dimensional polyacrylamide gel electrophoresis and mass spectrometry is a powerful combination for the separation of complex protein mixtures in biological samples and the subsequent identification of individual polypeptides. We have used this approach to construct a database of proteins of the