Autodisplay: efficient bacterial surface display of recombinant proteins |
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Authors: | Joachim Jose |
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Institution: | 1. Bioanalytik, Institut für Pharmazeutische und Medizinische Chemie, Heinrich-Heine-Universit?t, Universit?tsstr. 1, 40225, Düsseldorf, Germany
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Abstract: | To display a protein or peptide with a distinct function at the surface of a living bacterial cell is a challenging exercise
with constantly increasing impact in many areas of biochemistry and biotechnology. Among other systems in Gram-negative bacteria,
the Autodisplay system provides striking advantages when used to express a recombinant protein at the surface of Escherichia coli or related bacteria. The Autodisplay system has been developed on the basis of and by exploiting the natural secretion mechanism
of the AIDA-I autotransporter protein. It offers the expression of more than 105 recombinant molecules per single cell, permits the multimerization of subunits expressed from monomeric genes at the cell
surface, and allows, after transport of an apoprotein to the cell surface, the incorporation of an inorganic prosthetic group
without disturbing cell integrity or cell viability. Moreover, whole cells displaying recombinant proteins by Autodisplay
can be subjected to high-throughput screening (HTS) methods such as ELISA or FACS, thus enabling the screening of surface
display libraries and providing access to directed evolution of the recombinant protein displayed at the cell surface. In
this review, the application of the Autodisplay system for the surface display of enzymes, enzyme inhibitors, epitopes, antigens,
protein and peptide libraries is summarised and the perspectives of the system are discussed. |
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