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Proteomics of Synechocystis sp. PCC 6803
Identification of novel integral plasma membrane proteins
Article first published online: 10 JAN 2007
DOI: 10.1111/j.1742-4658.2006.05624.x
1742-4658/asset/cover.gif?v=1&s=fc98a9fc84ccc5e1b83463cabb40f397544364eb "FEBS Journal")
Additional Information
How to Cite
Pisareva, T., Shumskaya, M., Maddalo, G., Ilag, L. and Norling, B. (2007), Proteomics of Synechocystis sp. PCC 6803. FEBS Journal, 274: 791–804. doi: 10.1111/j.1742-4658.2006.05624.x
Publication History
- Issue published online: 10 JAN 2007
- Article first published online: 10 JAN 2007
- (Received 8 September 2006, revised 27 November 2006, accepted 5 December 2006)
Vol. 274, Issue 6, 1634, Article first published online: 28 FEB 2007
- Abstract
- Article
- References
- Cited By
Keywords:
- cyanobacteria;
- integral proteins;
- plasma membrane;
- proteome;
- Synechocystis 6803
The cyanobacterial plasma membrane is an essential cell barrier with functions such as the control of taxis, nutrient uptake and secretion. These functions are carried out by integral membrane proteins, which are difficult to identify using standard proteomic methods. In this study, integral proteins were enriched from purified plasma membranes of Synechocystis sp. PCC 6803 using urea wash followed by protein resolution in 1D SDS/PAGE. In total, 51 proteins were identified by peptide mass fingerprinting using MALDI-TOF MS. More than half of the proteins were predicted to be integral with 1–12 transmembrane helices. The majority of the proteins had not been identified previously, and include members of metalloproteases, chemotaxis proteins, secretion proteins, as well as type 2 NAD(P)H dehydrogenase and glycosyltransferase. The obtained results serve as a useful reference for further investigations of the address codes for targeting of integral membrane proteins in cyanobacteria.