Abstract:
:Microbial cell surface display technology is a powerful tool for displaying proteins on the surfaces of cells. However, few anchoring proteins can be employed for the display of target proteins on the cell surface of the environmentally benign Gram-positive bacterium Bacillus subtilis. In this study, bioinformatics tools were used to screen all of the encoded proteins of B. subtilis for potential anchoring proteins. A green fluorescent protein (eGFP) reporter system was constructed to evaluate the cell-display efficiency of the selected membrane proteins and their promoters. The anchoring protein SpoIIIJ demonstrated the strongest anchoring activity of all of the selected anchoring proteins from Bacillus spp. cells. A linker was designed to link the anchoring protein SpoIIIJ and eGFP, which had the ability to increase the expression of the fusion protein by 58.32%. Two bio-remediated related proteins (the organophosphorus hydrolase OPHC2 and the metal binding protein CadR) were successfully expressed on the cell surfaces of Bacillus spp. using this system. Therefore, our results suggest that this microbial surface display system may be useful for the expression of target proteins on the cell surfaces and has potential applications in the bioremediation of environmental pollution.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Ding Z,Guan F,Yu X,Li Q,Wang Q,Tian J,Wu Ndoi
10.1016/j.ijbiomac.2019.04.033subject
Has Abstractpub_date
2019-07-15 00:00:00pages
614-623eissn
0141-8130issn
1879-0003pii
S0141-8130(19)30487-8journal_volume
133pub_type
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