AI Article Synopsis
- Lipids II from some Gram-positive bacteria were created using radioactive l-lysine-containing UDP-MurNAc-pentapeptide.
- Specific lateral chains unique to bacteria like Enterococcus faecalis, Enterococcus faecium, and Staphylococcus aureus were added through chemical synthesis techniques.
- The resulting lipids were hydrolyzed by colicin M from Escherichia coli at similar rates as those found in Gram-negative bacteria, suggesting potential for colicin M as a broad-spectrum antibacterial agent.
Article Abstract
Lipids II found in some Gram-positive bacteria were prepared in radioactive form from l-lysine-containing UDP-MurNAc-pentapeptide. The specific lateral chains of Enterococcus faecalis, Enterococcus faecium and Staphylococcus aureus (di-L-alanine, D-isoasparagine, and pentaglycine, respectively) were introduced by chemical peptide synthesis using the Fmoc chemistry. The branched nucleotides obtained were converted into the corresponding lipids II by enzymatic synthesis using the MraY and MurG enzymes. All of the lipids were hydrolysed by Escherichia coli colicin M at approximately the same rate as the meso-diaminopimelate-containing lipid II found in Gram-negative bacteria, thereby opening the way to the use of this enzyme as a broad spectrum antibacterial agent.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biochi.2011.12.019 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
New quinazolone-sulfonate conjugates with an acetohydrazide linker as potential antimicrobial agents: design, synthesis and molecular docking simulations.
RSC Adv
January 2025
Department of Therapeutic Chemistry, Pharmaceutical and Drug Industries Research Institute, National Research Centre Dokki Giza 12622 Egypt
A novel molecular design based on a quinazolinone scaffold was developed the attachment of aryl alkanesulfonates to the quinazolinone core through a thioacetohydrazide azomethine linker, leading to a new series of quinazolinone-alkanesulfonates 5a-r. The antimicrobial properties of the newly synthesized quinazolinone derivatives 5a-r were investigated to examine their bactericidal and fungicidal activities against bacterial pathogens like , (Gram-positive), , , (Gram-negative), in addition to (unicellular fungal). The tested compounds demonstrated reasonable bactericidal activities compared to standard drugs.
View Article and Find Full Text PDFNew Insights on Strain 1B Surface-Active Biomolecules: Gordofactin Properties.
Molecules
December 2024
Unidade de Bioenergia e Biorrefinarias, LNEG-Laboratório Nacional de Energia e Geologia, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal.
Biosurfactants/bioemulsifiers (BSs/BEs) can be defined as surface-active biomolecules produced by microorganisms with a broad range of applications. In recent years, due to their unique properties like biodegradability, specificity, low toxicity, and relative ease of preparation, these biomolecules have attracted wide interest as an eco-friendly alternative for several industrial sectors, escalating global microbial BS/BE market growth. Recently, strain 1B, a bacterium with significant biotechnological potential, well known for its biodesulfurizing properties, carotenoid production, and broad catabolic range, was described as a BS/BE producer.
View Article and Find Full Text PDFCaveolin-Mediated Endocytosis: Bacterial Pathogen Exploitation and Host-Pathogen Interaction.
Cells
December 2024
Molecular and Cellular Microbiology Laboratory, Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529, USA.
Within mammalian cells, diverse endocytic mechanisms, including phagocytosis, pinocytosis, and receptor-mediated endocytosis, serve as gateways exploited by many bacterial pathogens and toxins. Among these, caveolae-mediated endocytosis is characterized by lipid-rich caveolae and dimeric caveolin proteins. Caveolae are specialized microdomains on cell surfaces that impact cell signaling.
View Article and Find Full Text PDFVirus Association with Bacteria and Bacterial Cell Components Enhance Virus Infectivity.
Food Environ Virol
January 2025
Division of Agriculture, Department of Food Science, University of Arkansas, 1371 West Altheimer Dr, Fayetteville, AR, 72704, USA.
The transmission and infection of enteric viruses can be influenced by co-existing bacteria within the environment and host. However, the viral binding ligands on bacteria and the underlying interaction mechanisms remain unclear. This study characterized the association of norovirus surrogate Tulane virus (TuV) and murine norovirus (MNV) as well as the human enteric virus Aichi virus (AiV) with six bacteria strains (Pantoea agglomerans, Pantoea ananatis, Bacillus cereus, Enterobacter cloacae, Exiguobacterium sibiricum, Pseudomonas spp.
View Article and Find Full Text PDFCholesterol concentration is associated with neither prognosis nor bacterial infection type in septic dogs.
Can Vet J
January 2025
Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Avenue, PO Box 100126, Gainesville, Florida 32610-012, USA (Perez-Rodriguez, Kidd, Wolf); IFAS Statistical Consulting, University of Florida, 402 McCarty Hall C, PO Box 110339, Gainesville, Florida 32611-0339, USA (Colee).
Objective: The objective was to assess whether cholesterol concentration at admission was associated with outcome and disease severity in dogs with sepsis, and to determine whether there was a significant difference in cholesterol between dogs with gram-positive gram-negative sepsis.
Animals And Procedure: Electronic medical records of dogs diagnosed with sepsis at a tertiary teaching hospital from 2012 to 2022 were evaluated. A total of 299 dogs were included.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!