ArticleBiochimica et biophysica acta. Biomembranes2020
Presence of substrate aids lateral gate separation in LptD.
Article in Biochimica et biophysica acta. Biomembranes, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 23 citations in OpenAlex.
- Structural basis of lipopolysaccharide assembly by the outer membrane translocon holo-complex.Nature communications · 2025Article
- Thanatin: A Promising Antimicrobial Peptide Targeting the Achilles' Heel of Multidrug-Resistant Bacteria.International journal of molecular sciences · 2024Review
- Seeing is believing: Illuminating the Gram-negative outer membrane with molecular dynamics simulations.Current opinion in structural biology · 2024Review
- Recent Advances in Modeling Membrane β-Barrel Proteins Using Molecular Dynamics Simulations: From Their Lipid Environments to Their Assemblies.Methods in molecular biology (Clifton, N.J.) · 2024Article
- LptM promotes oxidative maturation of the lipopolysaccharide translocon by substrate binding mimicry.Nature communications · 2023Article
- Lipid Transport Across Bacterial Membranes.Annual review of cell and developmental biology · 2022Review
- The transmembrane α-helix of LptC participates in LPS extraction by the LptBMolecular microbiology · 2022Article
- Cryo-EM structures of a LptDE transporter in complex with Pro-macrobodies offer insight into lipopolysaccharide translocation.Nature communications · 2022Article
- What have molecular simulations contributed to understanding of Gram-negative bacterial cell envelopes?Microbiology (Reading, England) · 2022Review
- Proteomic and bioinformatic analyses of proteins in the outer membrane and extracellular compartments and outer membrane vesicles ofFrontiers in microbiology · 2022Article
- Review
- Fighting Against Bacterial Lipopolysaccharide-Caused Infections through Molecular Dynamics Simulations: A Review.Journal of chemical information and modeling · 2021Review
- Assembly and Maintenance of Lipids at the Bacterial Outer Membrane.Chemical reviews · 2021Review
- Transport of lipopolysaccharides and phospholipids to the outer membrane.Current opinion in microbiology · 2021Review
- Dynamics of an LPS translocon induced by substrate and an antimicrobial peptide.Nature chemical biology · 2021Article
- Lipopolysaccharide transport involves long-range coupling between cytoplasmic and periplasmic domains of the LptBJournal of bacteriology · 2020Article
- Role of the lipid bilayer in outer membrane protein folding in Gram-negative bacteria.The Journal of biological chemistry · 2020Review
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
Lipopolysaccharides (LPS) provide the outer membrane (OM) of Gram-negative bacteria with a strong protective barrier. The periplasm-spanning Lpt machinery is responsible for the transport of LPS molecules across the periplasm, culminating in insertion by the outer-membrane proteins LptD and LptE. In order to elucidate the mechanisms of LPS insertion by LptDE, we performed over 14 microseconds of equilibrium molecular dynamics simulations. Bilayer-dependent differences in the fluctuations and secondary structure of LptD's extracellular loops are observed for a pure DMPE membrane vs. a model of the OM. Furthermore, LptD's periplasmic N-terminal domain is highly dynamic, which may help to maintain the integrity of the periplasm-spanning complex amidst relative motion of the inner-membrane and outer-membrane anchored domains. In addition, our simulations demonstrate that binding of LPS substrate activates a switching between the associated and dissociated states of two lumenal loops at the interface between the β-barrel and the N-terminal domain as well as LptD's lateral gate on the microsecond timescale, neither of which is observed for the apo state. Placement of a substrate LPS molecule also causes an increase in the average separation of the LptD lateral gate strands and a lowering of the energetic barrier to lateral gate opening.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.