ArticleApplied and environmental microbiology2012
LplR, a repressor belonging to the TetR family, regulates expression of the L-pantoyl lactone dehydrogenase gene in Rhodococcus erythropolis.
Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 5 citations in OpenAlex.
- LmbU, a Cluster-Situated Regulator for Lincomycin, Consists of a DNA-Binding Domain, an Auto-Inhibitory Domain, and Forms Homodimer.Frontiers in microbiology · 2019Article
- A Rhodococcal Transcriptional Regulatory Mechanism Detects the Common Lactone Ring of AHL Quorum-Sensing Signals and Triggers the Quorum-Quenching Response.Frontiers in microbiology · 2018Article
- The TetR family of regulators.Microbiology and molecular biology reviews : MMBR · 2013Review
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Authors and funding
4 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The L-pantoyl lactone (L-PL) dehydrogenase (LPLDH) gene (lpldh) has been cloned from Rhodococcus erythropolis AKU2103, and addition of 1,2-propanediol (1,2-PD) was shown to be required for lpldh expression in this strain. In this study, based on an exploration of the nucleotide sequence around lpldh, a TetR-like regulator gene, which we designated lplR, was found upstream of lpldh, and three putative open reading frames existed between the two genes. Disruption of lplR led to 22.8 times higher lpldh expression, even without 1,2-PD induction, than that in wild-type R. erythropolis AKU2103 without 1,2-PD addition. Introduction of a multicopy vector carrying lplR (multi-lplR) into the wild-type and ΔlplR strains led to no detectable LPLDH activity even in the presence of 1,2-PD. The results of an electrophoretic mobility shift assay revealed that purified LplR bound to a 6-bp inverted-repeat sequence located in the promoter/operator region of the operon containing lpldh. These results indicated that LplR is a negative regulator in lpldh expression. Based on the clarification of the expression mechanism of lpldh, recombinant cells showing high LPLDH activity were constructed and used as a catalyst for the conversion of L-PL to ketopantoyl lactone. Finally, a promising production process of D-PL from DL-PL was constructed.
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