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논문 리스트

2020
Constitutive Expression of Lipase on the Cell Surface of Escherichia coli using OmpC Anchoring Motif Constitutive Expression of Lipase on the Cell Surface of Escherichia coli using OmpC Anchoring Motif
한국화학공학회
이승환
논문정보
Publisher
Korean Chemical Engineering Research(HWAHAK KONGHAK)
Issue Date
2020-05-01
Keywords
-
Citation
-
Source
-
Journal Title
-
Volume
58
Number
2
Start Page
280
End Page
285
DOI
ISSN
0304128X
Abstract
We have developed a constitutive display system of the Pseudomonas fluorescens SIK W1 TliA lipase on the cell surface of Escherichia coli using E. coli outer membrane protein C (OmpC) as an anchoring motif, which is an economical compared to induced system. For the constitutive expression of truncated OmpC-TliA fusion proteins, gntT104 promoter was employed. Cell growth was not affected by over expression of fusion protein during entire culture time, suggesting cell lysis was not a problem. The localization of truncated OmpC-TliA fusion protein on the cell surface was confirmed by immunofluorescence microscopy and measuring whole cell lipase activity. Constitutively displayed lipase was very stable, retaining activity enantioselectivity throughout the five repeated reactions. These results suggest that OmpC from E. coli be a useful anchoring motif for displaying enzymes on the cell surface without any inducers, and this stable surface display system can be employed for a broad range of biotechnological applications.

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