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  • Title: Bacillus subtilis as cell factory for pharmaceutical proteins: a biotechnological approach to optimize the host organism.
    Author: Westers L, Westers H, Quax WJ.
    Journal: Biochim Biophys Acta; 2004 Nov 11; 1694(1-3):299-310. PubMed ID: 15546673.
    Abstract:
    Bacillus subtilis is a rod-shaped, Gram-positive soil bacterium that secretes numerous enzymes to degrade a variety of substrates, enabling the bacterium to survive in a continuously changing environment. These enzymes are produced commercially and this production represents about 60% of the industrial-enzyme market. Unfortunately, the secretion of heterologous proteins, originating from Gram-negative bacteria or from eukaryotes, is often severely hampered. Several bottlenecks in the B. subtilis secretion pathway, such as poor targeting to the translocase, degradation of the secretory protein, and incorrect folding, have been revealed. Nevertheless, research into the mechanisms and control of the secretion pathways will lead to improved Bacillus protein secretion systems and broaden the applications as industrial production host. This review focuses on studies that aimed at optimizing B. subtilis as cell factory for commercially interesting heterologous proteins.
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