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Appl Environ Microbiol, January 1998, p. 342-345, Vol. 64, No. 1
Flanders Interuniversity Institute for
Biotechnology, Department of Molecular Biology, Universiteit Gent,
B-9000 Ghent, Belgium
Received 22 July 1997/Accepted 17 October 1997
In this study, we showed that the cell wall anchor of protein A
from Staphylococcus aureus is functional in the food-grade organism Lactococcus lactis. A fusion protein composed of
the lactococcal Usp45 secretion signal peptide, streptavidin monomer, and the S. aureus protein A anchor became covalently
attached to the peptidoglycan when expressed in L. lactis.
The streptavidin moiety of the fusion protein was functionally exposed
at the cellular surface. L. lactis cells expressing the
anchored fusion polypeptide could be specifically immobilized on a
biotinylated alkaline phosphatase-coated polystyrene support.
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Functional Display of a Heterologous Protein on the
Surface of Lactococcus lactis by Means of the Cell Wall
Anchor of Staphylococcus aureus Protein A
*
Corresponding author. Mailing address: Laboratory of
Molecular Biology, Universiteit Gent, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium. Phone: 32 9 264 5130. Fax: 32 9 264 5330. E-mail: erik.remaut{at}lmb1.rug.ac.be.
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