Sorting of protein A to the staphylococcal cell wall.
The cell wall of gram-positive bacteria can be thought of as representing a unique cell compartment, which contains anchored surface proteins that require specific sorting signals. Some biologically important products are anchored in this way, including protein A and fibronectin binding protein of Staphylococcus aureus and streptococcal M protein. Studies of staphylococcal protein A and Escherichia coli alkaline phosphatase show that the signal both necessary and sufficient for cell wall anchoring consists of an LPXTGX motif, a C-terminal hydrophobic domain, and a charged tail. These sequence elements are conserved in many surface proteins from different gram-positive bacteria. We propose the existence of a hitherto undescribed sorting mechanism that positions proteins on the surface of gram-positive bacteria.[1]References
- Sorting of protein A to the staphylococcal cell wall. Schneewind, O., Model, P., Fischetti, V.A. Cell (1992) [Pubmed]
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