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1. (Article ID: 761)
Cescutti P, Bosco M, Picotti F, Impallomeni G, Leitão JH, Richau JA, Sá-Correia I
Structural study of the exopolysaccharide produced by a clinical isolate of Burkholderia cepacia
Biochemical and Biophysical Research Communications 273(3) (2000)
1088-1094
The primary structure of the exopolysaccharide produced by a clinical isolate of the bacterium Burkholderia cepacia was studied by means of methylation analysis, selective degradation, NMR spectroscopy, and electrospray mass spectrometry. The resulting data showed that the parent repeating unit of the exopolysaccharide is a highly branched heptasaccharide with the following structure: Two acetyl groups are present per repeating unit, as noncarbohydrate substituents.
NMR, structure, clinical, isolate, structural, Burkholderia, Burkholderia cepacia, exopolysaccharide, mass spectrometry, structural studies, cystic fibrosis, exo-polysaccharide
NCBI PubMed ID: 10891376Journal NLM ID: 0372516Publisher: Academic Press
Correspondence: cescutti
bbcm.univ.trieste.it
Institutions: Dipartimento BBCM, Universita` di Trieste, Trieste, Italy, POLY-tech Scarl, Trieste, Italy, ICTMP, CNR, Catania, Italy, Instituto Superior Te`cnico, Centro de Engenharia Biolo?gica e Quimica,Lisbon, Portugal
Methods: methylation, NMR, ESI-MS, selective degradation
The publication contains the following compound(s):
- Compound ID: 1002
|
b-D-Galp-(1-6)-+
|
b-D-Galp-(1-2)-a-D-Rhap-(1-4)-+ |
| |
-3)-b-D-Glcp-(1-3)-a-D-GlcpA-(1-3)-a-D-Manp-(1-
|
a-D-Galp-(1-2)-+ |
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Structure type: polymer chemical repeating unit
Trivial name: cepacian
Compound class: EPS
Reference(s) to other database(s): GTC:G16935RB, GlycomeDB:
25352
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2. (Article ID: 1141)
Richau JA, Leitão JH, Sá-Correia I
Enzymes leading to the nucleotide sugar precursors for exopolysaccharide synthesis in Burkholderia cepacia
Biochemical and Biophysical Research Communications 276(1) (2000)
71-76
Based on the chemical composition of the exopolysaccharide produced by the cystic fibrosis bacterial isolate Burkholderia cepacia IST408, we postulated and confirmed, based on the specificity of enzymes detected in crude cell-free extracts, the pathway leading to the presumptive activated sugar precursors: UDP-D-glucose, UDP-D-galactose, UDP-D-glucuronic acid, GDP-D-mannose, and GDP-D-rhamnose. Results also suggest that regulation of the expression of the mucoid phenotype in B. cepacia does not occur at the level of synthesis of any of these enzymes.
synthesis, Burkholderia, Burkholderia cepacia, exopolysaccharide, sugar, precursor, enzyme, Enzymes, cystic fibrosis, exopolysaccharide biosynthetic enzymes
NCBI PubMed ID: 11006084Journal NLM ID: 0372516Publisher: Academic Press
Correspondence: pcisc
alfa.ist.utl.pt
Institutions: Centro de Engenharia Biologica e Quimica, Instituto Superior Tecnico, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
The publication contains the following compound(s):
- Compound ID: 1002
|
b-D-Galp-(1-6)-+
|
b-D-Galp-(1-2)-a-D-Rhap-(1-4)-+ |
| |
-3)-b-D-Glcp-(1-3)-a-D-GlcpA-(1-3)-a-D-Manp-(1-
|
a-D-Galp-(1-2)-+ |
Show graphically |
Structure type: polymer chemical repeating unit
Trivial name: cepacian
Compound class: EPS
Reference(s) to other database(s): GTC:G16935RB, GlycomeDB:
25352
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