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  • Title: Cell immobilization studies using a cellulose-binding domain fused to PrtP in Lactococcus lactis.
    Author: Liu S, Kylä-Nikkilä K, Saris PE.
    Journal: Bioeng Bugs; 2011; 2(3):160-2. PubMed ID: 21637005.
    Abstract:
    The cellulose-binding domain (CBD) of XylA was fused with PrtP, NisP and AcmA anchors derived from Lactococcus lactis under P45 promoter and Usp45 secretion signal. The fusion construct with the anchor PrtP (334 aa) was shown to exhibit the most efficient immobilization. The CBD-PrtP construct on the other hand was not efficiently attached to the cell wall and as such was found mainly in the supernatant. Results also showed that expression of the CBD-NisP anchor fusion led to a similar result. This raised the question if more efficient binding of the anchor to the cell wall by sortase could enhance the efficiency of cell immobilization to the cellulosic material. However, expressing sortase with the CBD-PrtP fusion did not improve the immobilization of the cells to cellulose.  
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