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Diversity of Microbial Sialic Acid Metabolism
SUMMARY Sialic acids are structurally unique nine-carbon keto sugars occupying the interface between the host and commensal or pathogenic microorganisms. An important function of host sialic acid isExpand
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Convergent pathways for utilization of the amino sugars N-acetylglucosamine, N-acetylmannosamine, and N-acetylneuraminic acid by Escherichia coli.
N-Acetylglucosamine (GlcNAc) and N-acetylneuraminic acid (NANA) are good carbon sources for Escherichia coli K-12, whereas N-acetylmannosamine (ManNAc) is metabolized very slowly. The isolation ofExpand
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Crystal structure of a bacterial sialidase (from Salmonella typhimurium LT2) shows the same fold as an influenza virus neuraminidase.
Sialidases (EC 3.2.1.18 or neuraminidases) remove sialic acid from sialoglycoconjugates, are widely distributed in nature, and have been implicated in the pathogenesis of many diseases. TheExpand
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Identification of an inducible catabolic system for sialic acids (nan) in Escherichia coli.
  • E. Vimr, F. Troy
  • Biology, Medicine
  • Journal of bacteriology
  • 1 November 1985
Escherichia coli K-12 and K-12 hybrid strains constructed to express a polysialic acid capsule, the K1 antigen, were able to efficiently use sialic acid as a sole carbon source. This ability wasExpand
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Sialic acid metabolism's dual function in Haemophilus influenzae
Many bacterial commensals and pathogens use the sialic acids as carbon and nitrogen sources. In Escherichia coli, the breakdown of these sugars is catalysed by gene products of the nanExpand
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The sialidase superfamily and its spread by horizontal gene transfer
Sialidases (neuraminidases, EC 3.2.1.18) belong to a class of glycosyl hydrolases that release terminal N‐acylneuraminate (slalic acid) residues from glycoproteins, glycolipids, and polysaccharides.Expand
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To sialylate, or not to sialylate: that is the question.
Most oropharyngeal pathogens express sialic acid units on their surfaces, mimicking the sialyl-rich mucin layer coating epithelial cells and the glycoconjugates present on virtually all host cellExpand
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Purification and properties of a bacteriophage-induced endo-N-acetylneuraminidase specific for poly-alpha-2,8-sialosyl carbohydrate units.
The soluble form of a bacteriophage-induced endo-N-acetylneuraminidase (Endo-N) specific for hydrolyzing oligo- or poly-alpha-2,8-linked sialosyl units in sources as disparate as bacterial and neuralExpand
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Purification and characterization of the Escherichia coli K1 neuB gene product N-acetylneuraminic acid synthetase.
Escherichia coli K1 produces a capsular polysaccharide of alpha(2-8) poly-N-acetylneuraminic acid. This polysaccharide is an essential virulence factor of these neuropathogenic bacteria. The genesExpand
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Escherichia coli K1 polysialic acid O-acetyltransferase gene, neuO, and the mechanism of capsule form variation involving a mobile contingency locus.
Potential O-acetylation of the sialic acid residues of Escherichia coli K1, groups W-135, Y, and C meningococci, and group B Streptococcus capsular polysaccharides modifies their immunogenicity andExpand
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