ArticleNature communications2024
The role of the essential GTPase ObgE in regulating lipopolysaccharide synthesis in Escherichia coli.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Protein-Protein Interactions Between Peptidoglycan, Lipopolysaccharide, and Phospholipid Biosynthesis Enzymes in Escherichia coli.Chembiochem : a European journal of chemical biology · 2026Article
- Ribosomal allostery as a potential regulator of bacterial dormancy.Nature communications · 2026Article
- Ectopic overexpression and CRISPRi-based knockdown ofJournal of bacteriology · 2025Article
- Lipopolysaccharide: Recent Advances in Its Biosynthesis and Controlling Cell Envelope Homeostasis.International journal of molecular sciences · 2025Article
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Authors and funding
12 authors.
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Abstract
During growth, cells need to synthesize and expand their envelope, a process that requires careful regulation. Here, we show that the GTPase ObgE of E. coli contributes to the regulation of lipopolysaccharide (LPS) synthesis, an essential component of the Gram-negative outer membrane. Using a dominant-negative mutant (named 'ObgE*'), we show a direct interaction between ObgE and LpxA, which catalyzes the first step in LPS synthesis. This interaction is enhanced by the mutation in ObgE* which, when bound to GTP, leads to inhibition of LpxA, decreased LPS synthesis, and cell death. Although wild-type ObgE does not exert the same strong effects as ObgE* on LpxA or LPS synthesis, our data indicate that ObgE participates in the regulation of cell envelope synthesis in E. coli. Because ObgE also influences other cellular functions (i.e., ribosome assembly, DNA replication, etc.), it seems increasingly plausible that this GTPase coordinates several processes to finetune cell growth.
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