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In vivo conversion of 6-O-sulfo-l-galactopyranosyl residues into 3,6-anhydro-l-galactopyranosyl residues inGracilaria chilensisBird, McLachlanetOliveira

Authors
Journal
Carbohydrate Research
0008-6215
Publisher
Elsevier
Publication Date
Volume
296
Identifiers
DOI: 10.1016/s0008-6215(96)00247-9
Keywords
  • Agar Biosynthesis
  • Gracilaria Chilensis
  • Precursor Conversion

Abstract

Abstract The agar polysaccharides of the red seaweed Gracilaria chilensis Bird, McLachlan et Oliveira were labelled with the stable isotope 13C by pulse feeding NaH 13CO 3 to samples of this alga acclimatised to indoor culture. 13C NMR spectroscopy of the labelled polysaccharides extracted from these samples has been used to demonstrate conversion in vivo of 6- O-sulfo-l-galactopyranosyl residues into 3,6-anhydro- l-galactopyranosyl residues. The 6- O-sulfo-l-galactopyranosyl residues can be linked to either 6- O-methyl-d-galactopyranosyl residues or d-galactopyranosyl residues.

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