The emergence of antibiotic resistance in enterococci is a great concern encountered worldwide. Almost all enterococci exhibit significant levels of resistance to penicillin, ampicillin, semi-synthetic penicillin and most cephalosporins, primarily due to the expression of low-affinity penicillin-binding proteins. The development of new and novel antibacterial agents against enterococci is a significant need of the hour. In this research, we have constructed a modular peptide against . The enzymatic domain of the constructed peptide BP404 is from the bacteriocin BacL1 and the cell wall binding domain from endolysin PlyV12 of phage ϕ1. The protein BP404 was found to be active against two tested strains of , with a reduction in cell density amounting to 85% and 65%. The cell wall binding assay confirms the binding of the protein to , which was not seen towards the control strain , invariably pointing to the specificity of BP404. To the best of our knowledge, this is one of the first instances of the development of a chimeric peptide against . This study points out that novel proteins can be genetically engineered against clinically relevant enterococci.
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http://dx.doi.org/10.3390/antibiotics12020388 | DOI Listing |
Genome Biol Evol
January 2025
Department of Biological Sciences, University of Alberta, BS CW405 Edmonton, AB, T6G 2R3, Canada.
Fungi are well known for their ability to both produce and catabolize complex carbohydrates to acquire carbon, often in the most extreme of environments. Glucuronoxylomannan (GXM)-based gel matrices are widely produced by fungi in nature and though they are of key interest in medicine and pharmaceuticals, their biodegradation is poorly understood. Though some organisms, including other fungi, are adapted to life in and on GXM-like matrices in nature, they are almost entirely unstudied, and it is unknown if they are involved in matrix degradation.
View Article and Find Full Text PDFSci Rep
January 2025
School of Agriculture and Food Systems, Davis College of Agriculture and Natural Resources, West Virginia University, Morgantown, WV, USA.
The management of micronutrients, such as boron (B) and zinc (Zn), is critical for plant growth and crop yields. One method of rapid intervention crop management to mitigate nutritional deficiency is the foliar supply of B and Zn. Our study investigates the effect of foliar-supplied B and Zn availability on the global transcriptional modulation in soybean (Glycine max).
View Article and Find Full Text PDFBiochemistry (Mosc)
December 2024
Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino, Moscow Region, 142290, Russia.
VKM Ac-1390 (family Microbacteriaceae, class Actinomycetes) contains three rhamnose-containing glycopolymers in the cell wall, the structures of which were established by chemical and NMR spectroscopy methods. The first polymer, a rhamnomannan, consists of repeating tetrasaccharide units with xylopyranose side residues, →2)-α-[β-D-Xyl-(1→3)]-D-Rha-(1→3)-α-D-Man-(1→2)-α-D-Rha-(1→3)-α-D-Man-(1→. The second polymer found in minor amounts, is a rhamnan, →2)-α-D-Rha-(1→3)-α-D-Rha-(1→.
View Article and Find Full Text PDFLife Sci Space Res (Amst)
February 2025
Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
Future long duration space missions will expose astronauts to higher doses of galactic cosmic radiation (GCR) than those experienced on the international space station. Recent studies have demonstrated astronauts may be at risk for cardiovascular complications due to increased radiation exposure and fluid shift from microgravity. However, there is a lack of direct evidence on how the cardiovascular system is affected by GCR and microgravity since no astronauts have been exposed to exploratory mission relevant GCR doses.
View Article and Find Full Text PDFFungal Genet Biol
January 2025
Department of Biology and Western Program, Miami University, Oxford, OH 45056, USA. Electronic address:
Hyphae are viscoelastic tubes whose internal pressure pushes the cell membrane against the inner surface of the cell wall. Catalytic yielding of the wall allows this turgor to force its polymers apart as new materials are added to the surface of the growing tip. Turgor drops slightly as the wall expands, creating a pressure gradient that causes the cytoplasm to flow toward the tip.
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