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Crystal structure and functional characterization of a novel bacterial lignin-degrading dye-decolorizing peroxidase.
Int J Biol Macromol
January 2025
Department of Life Sciences and Systems Biology, University of Torino, Italy.
A new gene coding for an iron-containing enzyme was identified in the genome of Acinetobacter radioresistens. Bioinformatics analysis allowed the assignment of the protein to DyP peroxidases, due to the presence of conserved residues involved in heme binding and catalysis. Moreover, Ar-DyP is located in an operon coding also for other enzymes involved in iron uptake and regulation.
View Article and Find Full Text PDFSiderophore synthetase-receptor gene coevolution reveals habitat- and pathogen-specific bacterial iron interaction networks.
Sci Adv
January 2025
Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
Bacterial social interactions play crucial roles in various ecological, medical, and biotechnological contexts. However, predicting these interactions from genome sequences is notoriously difficult. Here, we developed bioinformatic tools to predict whether secreted iron-scavenging siderophores stimulate or inhibit the growth of community members.
View Article and Find Full Text PDFImaging characteristics of hypervascular focal nodular hyperplasia-like lesions in patients with chronic alcoholic liver disease.
World J Gastroenterol
January 2025
Department of Radiology, Kindai University, Faculty of Medicine, Osakasayama 589-8511, Osaka, Japan.
Background: Focal nodular hyperplasia (FNH)-like lesions are hyperplastic formations in patients with micronodular cirrhosis and a history of alcohol abuse. Although pathologically similar to hepatocellular carcinoma (HCC) lesions, they are benign. As such, it is important to develop methods to distinguish between FNH-like lesions and HCC.
View Article and Find Full Text PDFStructure, Function, and Biosynthesis of Siderophores Produced by Species.
J Agric Food Chem
January 2025
Institute of Food Science and Engineering, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Since the natural supply of iron is low, microorganisms acquire iron by secreting siderophores. is known for its abundant secondary metabolites containing various types of siderophores, including hydroxamate, catecholate, and carboxylate. These siderophores are mainly synthesized through the nonribosomal peptide synthase (NRPS) and non-NRPS pathways and are regulated by ferric uptake regulator and diphtheria toxin regulators.
View Article and Find Full Text PDFMagnetic chromatography improves colloidal and MRI attributes of magnetoliposomes enabling evaluation of the impact of size on bio-distribution in an model of pancreatic cancer.
J Mater Chem B
January 2025
School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
Magnetic chromatography was exploited to fractionate suspensions of magnetoliposomes (SML: lumen-free lipid-encapsulated clusters of multiple magnetic iron-oxide nanoparticles) improving their colloidal properties and relaxivity (magnetic resonance image contrast capability). Fractionation (i) removed sub-populations that do not contribute to the MRI response, and thus (ii) enabled evaluation of the size-dependence of relaxivity for the MRI-active part, which was surprisingly weak in the 55-90 nm range. MC was therefore implemented for processing multiple PEGylated SML types having average sizes ranging from 85 to 105 nm, which were then shown to have strongly size-dependent uptake in an pancreatic cancer model.
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