Klebsiella pneumoniae is an opportunistic pathogen that mostly affects those with weakened immune systems. Urease is a vital enzyme that can hydrolyze urea to ammonia and carbon dioxide as a source of nitrogen for growth. Urease is also a K. pneumoniae virulence factor that enables survival of the bacterium under nutrient-limiting conditions. UreF, an important nickel-binding urease accessory protein, is involved in the insertion of Ni into the active site of urease. Here, the crystal structure of UreF from K. pneumoniae (KpUreF) is reported. Functional data show that KpUreF forms a stable dimer in solution. These results may provide a starting point for the design of urease inhibitors.
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http://dx.doi.org/10.1107/S2053230X22000474 | DOI Listing |
Microbiol Spectr
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School of Engineering Medicine, Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Interdisciplinary Innovation Institute of Medicine and Engineering, Beihang University, Beijing, China.
Unlabelled: , a significant pathogenic bacterium within the Enterobacteriaceae family, is widely distributed across various natural environments. This study conducted a genomic comparison analysis of 1,267 strains of using extensive genome data from public databases. The objective was to elucidate the pan-genomic structure of , revealing the composition and distribution of core and accessory gene families among different strains.
View Article and Find Full Text PDFRSC Adv
September 2024
Dr Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan
Appl Microbiol Biotechnol
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State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
Rumen microbial urease inhibitors have been proposed for regulating nitrogen emission and improving nitrogen utilization efficiency in ruminant livestock industry. However, studies on plant-derived natural inhibitors of rumen microbial urease are limited. Urease accessory protein UreG, plays a crucial role in facilitating urease maturation, is a new target for design of urease inhibitor.
View Article and Find Full Text PDFJ Bacteriol
April 2024
Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA.
Unlabelled: A hallmark of infection of the urinary tract is the formation of stones. The ability to induce urinary stone formation requires urease, a nickel metalloenzyme that hydrolyzes urea. This reaction produces ammonia as a byproduct, which can serve as a nitrogen source and weak base that raises the local pH.
View Article and Find Full Text PDFNPJ Microgravity
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Department of Microbiology and Cell Science, IFAS, University of Florida, Gainesville, FL, USA.
Staphylococcus aureus colonizes the nares of approximately 30% of humans, a risk factor for opportunistic infections. To gain insight into S. aureus virulence potential in the spaceflight environment, we analyzed RNA-Seq, cellular proteomics, and metabolomics data from the "Biological Research in Canisters-23" (BRIC-23) GeneLab spaceflight experiment, a mission designed to measure the response of S.
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