Proteomics of Synechocystis sp. PCC 6803 Identification of novel integral plasma membrane proteins: Identification of novel integral plasma membrane proteins
2007 (English)In: The FEBS Journal, ISSN 1742-464X, E-ISSN 1742-4658, Vol. 274, no 3, 791-804 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2007. Vol. 274, no 3, 791-804 p.
cyanobacteria, integral proteins, plasma membrane, proteome, Synechocystis 6803
IdentifiersURN: urn:nbn:se:su:diva-56160DOI: 10.1111/j.1742-4658.2006.05624.xOAI: oai:DiVA.org:su-56160DiVA: diva2:409890