ArticleThe Journal of biological chemistry2009
Designed beta-boomerang antiendotoxic and antimicrobial peptides: structures and activities in lipopolysaccharide.
Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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Who cites it
42 citing papers in PubMed, 102 citations in OpenAlex.
- Transgenic Tobacco Plants Expressing Synthetic Peptides: A Functional and Structural Analysis for Pathogen Resistance.Plant biotechnology journal · 2026Article
- Antimicrobial Peptides Against Antimicrobial-Resistant Bacteria: Focus on Machine Learning.Infection and drug resistance · 2026Review
- Creation of New Antimicrobial Peptides 3: Research Promises and Shortcomings.International journal of molecular sciences · 2025Article
- LL-37: Structures, Antimicrobial Activity, and Influence on Amyloid-Related Diseases.Biomolecules · 2024Review
- Interaction of Pexiganan (MSI-78)-Derived Analogues Reduces Inflammation and TLR4-Mediated Cytokine Secretion: A Comparative Study.ACS omega · 2023Article
- Antimicrobial peptide 2K4L disrupts the membrane of multidrug-resistantFrontiers in microbiology · 2023Article
- Ultra-Short Cyclized β-Boomerang Peptides: Structures, Interactions with Lipopolysaccharide, Antibiotic Potentiator and Wound Healing.International journal of molecular sciences · 2022Article
- Peptides Isolated from Amphibian Skin Secretions with Emphasis on Antimicrobial Peptides.Toxins · 2022Review
- A rationally designed synthetic antimicrobial peptide against Pseudomonas-associated corneal keratitis: Structure-function correlation.Biophysical chemistry · 2022Article
- Atomic-Resolution Structures and Mode of Action of Clinically Relevant Antimicrobial Peptides.International journal of molecular sciences · 2022Review
- Potent antibacterial and antibiofilm activities of TICbf-14, a peptide with increased stability against trypsin.Journal of microbiology (Seoul, Korea) · 2022Article
- The Impact of Lung Proteases on Snake-Derived Antimicrobial Peptides.Biomolecules · 2021Article
- Thanatin: An Emerging Host Defense Antimicrobial Peptide with Multiple Modes of Action.International journal of molecular sciences · 2021Review
- Bacterial Biofilm Inhibition: A Focused Review on Recent Therapeutic Strategies for Combating the Biofilm Mediated Infections.Frontiers in microbiology · 2021Review
- Design, Engineering and Discovery of Novel α-Helical and β-Boomerang Antimicrobial Peptides against Drug Resistant Bacteria.International journal of molecular sciences · 2020Review
- Photocatalytically renewable peptide-based electrochemical impedance method for sensing lipopolysaccharide.Mikrochimica acta · 2020Article
- Article
- Lipopolysaccharide Simulations Are Sensitive to Phosphate Charge and Ion Parameterization.Journal of chemical theory and computation · 2020Article
- Development of a novel short 12-meric papiliocin-derived peptide that is effective against Gram-negative sepsis.Scientific reports · 2019Article
- Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Lipopolysaccharide (LPS), an integral part of the outer membrane of Gram-negative bacteria, is involved in a variety of biological processes including inflammation, septic shock, and resistance to host-defense molecules. LPS also provides an environment for folding of outer membrane proteins. In this work, we describe the structure-activity correlation of a series of 12-residue peptides in LPS. NMR structures of the peptides derived in complex with LPS reveal boomerang-like beta-strand conformations that are stabilized by intimate packing between the two aromatic residues located at the 4 and 9 positions. This structural feature renders these peptides with a high ability to neutralize endotoxicity, >80% at 10 nM concentration, of LPS. Replacements of these aromatic residues either with Ala or with Leu destabilizes the boomerang structure with the concomitant loss of antiendotoxic and antimicrobial activities. Furthermore, the aromatic packing stabilizing the beta-boomerang structure in LPS is found to be maintained even in a truncated octapeptide, defining a structured LPS binding motif. The mode of action of the active designed peptides correlates well with their ability to perturb LPS micelle structures. Fourier transform infrared spectroscopy studies of the peptides delineate beta-type conformations and immobilization of phosphate head groups of LPS. Trp fluorescence studies demonstrated selective interactions with LPS and the depth of insertion into the LPS bilayer. Our results demonstrate the requirement of LPS-specific structures of peptides for endotoxin neutralizations. In addition, we propose that structures of these peptides may be employed to design proteins for the outer membrane.
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Registered trials
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.