Taxonomic group: bacteria / Proteobacteria
(Phylum: Proteobacteria)
Associated disease: infection due to Escherichia coli [ICD11:
XN6P4 
]
NCBI PubMed ID: 11279237Journal NLM ID: 2985121RPublisher: Baltimore, MD: American Society for Biochemistry and Molecular Biology
Institutions: Zentrum fur Ultrastrukturforschung und Ludwig Boltzmann-Institut fur Molekulare Nanotechnologie, Universitat fur Bodenkultur Wien, Austria
The glycan chain repeats of the S-layer glycoprotein of Aneurinibacillus thermoaerophilus DSM 10155 contain D-glycero-D-mannoheptose, which has also been described as constituent of lipopolysaccharide cores of Gram-negative bacteria. The four genes required for biosynthesis of the nucleotide-activated form GDP-D-glycero-D-mannoheptose were cloned, sequenced, and overexpressed in Escherichia coli, and the corresponding enzymes GmhA, GmhB, GmhC, and GmhD were purified to homogeneity. The isomerase GmhA catalyzed the conversion of D-sedoheptulose 7-phosphate to D-glycero-D-manno-heptose 7-phosphate, and the phosphokinase GmhB added a phosphate group to form D-glycero-D-manno-heptose 1,7-bisphosphate. The phosphatase GmhC removed the phosphate in the C-7 position, and the intermediate D-glycero-α-D-manno-heptose 1-phosphate was eventually activated with GTP by the pyrophosphorylase GmhD to yield the final product GDP-D-glycero-α-D-manno-heptose. The intermediate and end products were analyzed by high performance liquid chromatography. Nuclear magnetic resonance spectroscopy was used to confirm the structure of these substances. This is the first report of the biosynthesis of GDP-D-glycero-α-D-manno-heptose in Gram-positive organisms. In addition, we propose a pathway for biosynthesis of the nucleotide-activated form of L-glycero-L-manno-heptose
Lipopolysaccharide, biosynthesis, L-glycero-D-manno-heptose, structure, core, heptose, intermediate, Bacterial Proteins, chemistry, gene, Bacterial, genetics, metabolism, structural, Support, Non-U.S.Gov't, chain, group, molecular, form, Escherichia, Escherichia coli, cloning, phosphate, high, lipopolysaccharide core, Molecular Sequence Data, Genes, Restriction Mapping, bacteria, glycan, position, Magnetic Resonance Spectroscopy, nuclear, nuclear magnetic resonance, nuclear magnetic resonance spectroscopy, resonance, spectroscopy, D-glycero-D-manno-heptose, Gram-negative bacteria, enzyme, gram negative bacteria, Gram-negative, homogeneity, purified, Carbohydrate Conformation, chromatography, Enzymes, pathway, cloned, Base Sequence, operon, amino acid, glycoproteins, Bacillus, conversion, activated, liquid chromatography, Gram-positive, S-layer, amino acid sequence, glycoprotein, S layer, heptoses, Sequence Alignment, Bacillaceae, High Pressure Liquid, DNA Primers, Guanosine Diphosphate Sugars, Membrane Glycoproteins, phosphatase, Phosphoric Monoester Hydrolases, Recombinant Proteins, Sequence Homology
Structure type: monomer
Location inside paper: Fig.8
Trivial name: ADP-β-L-glycero-D-manno-heptose, ADP-L-glycero-β-D-manno-heptose
Contained glycoepitopes: IEDB_137353,IEDB_140947
Biosynthesis and genetic data: biochemical data
Related record ID(s): 943, 944, 21501, 23513
NCBI Taxonomy refs (TaxIDs): 562Reference(s) to other database(s): GlycomeDB:
25190
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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