Structure of the N‐Linked Oligosaccharides from Tridacnin, a Lectin Found in the Haemolymph of the Giant Clam Hippopus Hippopus Academic Article uri icon


  • Tridacnin, a glycoprotein lectin, was isolated from the symbiotic marine clam Hippopus hippopus and the structure of its major N-glycan chains determined. Tridacnin contains only N-linked glycans which were quantitatively cleaved by peptide-N4-(N-acetyl-beta-glucosaminyl)asparagine amidase F. Following purification by anion-exchange HPLC, the structures of the oligosaccharides were established using a combination of electrospray ionisation mass spectrometry, 1H-NMR spectroscopy and linkage analysis. The N-glycans are primarily of the oligomannose type but, in addition, some contain a novel 6-O-Me group on the terminal mannose residue of the chain. The N-glycan chains had the following structures. [formula: see text]


  • Puanglarp, N
  • Oxley, D
  • Currie, GJ
  • Bacic, A
  • Craik, DJ
  • Yellowlees, D

publication date

  • January 1, 1995