Construction of methanol sensing Escherichia coli by the introduction of novel chimeric MxcQZ/OmpR two-component system from Methylobacterium organophilum XX

다국어 초록 (Multilingual Abstract)

Methylobacterium organophilum XX is a type II facultative methylotroph that can grow on methanol. In M.
organophilum XX, the MxcQ/MxcE two-component system (TCS) is involved in methanol metabolism. EnvZ/OmpR in E. coli TCS was exploited to develop a methanol biosensor by engaging the MxcQ/MxcE TCS system. The MxcQZ/ OmpR methanol sensing chimeric TCS was constructed by integrating the sensing domain of M. organophilum MxcQ with the transmitter domain of E. coli EnvZ. The response regulator of the chimeric TCS system is OmpR, which regulates the expression of the ompC and gfp. The expression of ompC was monitored by real-time quantitative PCR analysis.
The expression of gfp also confirmed the expression of the ompC. The maximum expression of ompC and gfp occurred with 0.05% of methanol, and the expression started to decline with further increases in methanol concentration.
This system delivers rapid detection of methanol in the environment.

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