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  • Title: Protein secretion pathway in Escherichia coli.
    Author: Blight MA, Chervaux C, Holland IB.
    Journal: Curr Opin Biotechnol; 1994 Oct; 5(5):468-74. PubMed ID: 7765458.
    Abstract:
    The export of proteins to the Escherichia coli periplasm is a well established system for heterologous protein production. With a better understanding of the protein export (SecA, Y-dependent) process and a greater awareness of the conditions necessary for correct folding of proteins in the periplasm, serious efforts are now being made to manipulate this system to achieve substantial increases in the yield of authentically folded proteins. Further advances in the development of methods for the recovery of recombinant proteins from the culture medium have made the use of fusion proteins secreted by the protein A or haemolysin pathways a more attractive option. Recent studies of the haemolysin system indicate its ability to secrete a wide range of polypeptides, including normally cytoplasmic proteins. As their features and potential applications become much clearer, a rapidly expanding number of protein-secretion mechanisms in Gram-negative bacteria are becoming available for heterologous protein expression. Most, if not all, of these systems can be successfully transplanted into E. coli, providing a wider choice of systems for the future.
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