ArticleJournal of bacteriology2012
CcrR, a TetR family transcriptional regulator, activates the transcription of a gene of the Ethylmalonyl coenzyme A pathway in Methylobacterium extorquens AM1.
Article in Journal of bacteriology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 29 citations in OpenAlex.
- Engineering of a TetR family transcriptional regulator BkdR enhances heterologous spinosad production inApplied and environmental microbiology · 2024Article
- Pseudomonas aeruginosa regulator PvrA binds simultaneously to multiple pseudo-palindromic sites for efficient transcription activation.Science China. Life sciences · 2024Article
- Functional Degeneracy in Paracoccus denitrificans Pd1222 Is Coordinated via RamB, Which Links Expression of the Glyoxylate Cycle to Activity of the Ethylmalonyl-CoA Pathway.Applied and environmental microbiology · 2023Article
- Regulation Mechanism of Nicotine Catabolism in Sphingomonas melonis TY by a Dual Role Transcriptional Regulator NdpR.Applied and environmental microbiology · 2023Article
- Regulatory and structural mechanisms of PvrA-mediated regulation of the PQS quorum-sensing system and PHA biosynthesis in Pseudomonas aeruginosa.Nucleic acids research · 2023Article
- The TetR Family Repressor HpaR Negatively Regulates the Catabolism of 5-Hydroxypicolinic Acid in Alcaligenes faecalis JQ135 by Binding to Two Unique DNA Sequences in the Promoter ofApplied and environmental microbiology · 2022Article
- AccR, a TetR Family Transcriptional Repressor, Coordinates Short-Chain Acyl Coenzyme A Homeostasis inApplied and environmental microbiology · 2020Article
- TetR-family transcription factors in Gram-negative bacteria: conservation, variation and implications for efflux-mediated antimicrobial resistance.BMC genomics · 2019Article
- Isolation and identification of a TetR family protein that regulates the biodesulfurization operon.AMB Express · 2019Article
- Production of 3-hydroxypropionic acid in engineered Methylobacterium extorquens AM1 and its reassimilation through a reductive route.Microbial cell factories · 2017Article
- GdmRIII, a TetR Family Transcriptional Regulator, Controls Geldanamycin and Elaiophylin Biosynthesis in Streptomyces autolyticus CGMCC0516.Scientific reports · 2017Article
- Article
- Roles of the crotonyl-CoA carboxylase/reductase homologues in acetate assimilation and biosynthesis of immunosuppressant FK506 in Streptomyces tsukubaensis.Microbial cell factories · 2015Article
- Increasing Avermectin Production in Streptomyces avermitilis by Manipulating the Expression of a Novel TetR-Family Regulator and Its Target Gene Product.Applied and environmental microbiology · 2015Article
- Ethylmalonyl coenzyme A mutase operates as a metabolic control point in Methylobacterium extorquens AM1.Journal of bacteriology · 2015Article
- Substrate-dependent activation of the Vibrio cholerae vexAB RND efflux system requires vexR.PloS one · 2015Article
- Metabolic engineering of Methylobacterium extorquens AM1 for 1-butanol production.Biotechnology for biofuels · 2014Article
- Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The ethylmalonyl coenzyme A (ethylmalonyl-CoA) pathway is one of the central methylotrophy pathways in Methylobacterium extorquens involved in glyoxylate generation and acetyl-CoA assimilation. Previous studies have elucidated the operation of the ethylmalonyl-CoA pathway in C(1) and C(2) assimilation, but the regulatory mechanisms for the ethylmalonyl-CoA pathway have not been reported. In this study, a TetR-type activator, CcrR, was shown to regulate the expression of crotonyl-CoA reductase/carboxylase, an enzyme of the ethylmalonyl-CoA pathway involved in the assimilation of C(1) and C(2) compounds in Methylobacterium extorquens AM1. A ccrR null mutant strain was impaired in its ability to grow on C(1) and C(2) compounds, correlating with the reduced activity of crotonyl-CoA reductase/carboxylase. Promoter fusion assays demonstrated that the activity of the promoter required for ccr expression (the katA-ccr promoter) decreased as much as 50% in the absence of ccrR compared to wild-type M. extorquens AM1. Gel mobility shift assays confirmed that CcrR directly binds to the region upstream of the katA-ccr promoter. A palindromic sequence upstream of katA at positions -334 to -321 with respect to the predicted translational start site was identified, and mutations in this region eliminated the gel retardation of the katA-ccr promoter region by CcrR. CcrR does not appear to regulate the expression of other ethylmalonyl-CoA pathway genes, suggesting the existence of additional regulators.
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Registered trials
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