| Author | Search for: Cox, A.; Search for: Hood, D.; Search for: Martin, A.; Search for: Makepeace, K.; Search for: Deadman, M.; Search for: Li, J.; Search for: Brisson, J.; Search for: Moxon, E.; Search for: Richards, J. |
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| Format | Text, Article |
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| Subject | acid; Canada; component; core region; genetics; Haemophilus; Haemophilus influenzae; identification; inner core region; lipopolysaccharide; LPS; molecular; molecule; MS; nmr; NMR spectroscopy; oligosaccharide; region; residues; sialic; sialic-acid; spectroscopy; strain; structural; structural characterization; structure |
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| Abstract | A sialylated lacto-N-neotetraose (Sial-lNnT) structural unit was identified and structurally characterized in the lipopolysaccharide (LPS) from the genome-sequenced strain Road (RM118) of the human pathogen Haemophilus influenzae grown in the presence of sialic acid. A combination of molecular genetics, MS and NMR spectroscopy techniques showed that this structural unit extended from the proximal heptose residue of the inner core region of the LPS molecule. The structure of the Sial-lNnT unit was identical to that found in meningococcal LPS, but glycoforms containing truncations of the Sial-lNnT unit, comprising fewer residues than the complete oligosaccharide component, were not detected. The finding of sialylated glycoforms that were either fully extended or absent suggests a novel biosynthetic feature for adding the terminal tetrasaccharide unit of the Sial-lNnT to the glycose acceptor at the proximal inner core heptose |
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| Publication date | 2002-08 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | COX2002 |
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| NPARC number | 9372137 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | fa9d7061-fb18-4222-8fec-ff740adfd07f |
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| Record created | 2009-07-10 |
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| Record modified | 2020-03-30 |
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