Recombinant (2→3)-α-sialyltransferase immobilized on nickel-Agarose for preparative synthesis of sialyl Lewisxand Lewisaprecursor oligosaccharides

  • Ivannikova T
  • Bintein F
  • Malleron A
 et al. 
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The specificity of recombinant (2→3)-α-sialyltransferase (ST3Gal-III), expressed in baculovirus-infected insect cells, has been determined with various oligosaccharide acceptors and sugar-nucleotide donors using a fluorescence based assay. Recombinant ST3Gal-III tagged with a polyhistidine tail was immobilized on Ni2+-NTA-Agarose as an active enzyme for use in the synthesis of three sialylated oligosaccharides: (i) the divalent molecule [α-Neu5Ac-(2→3)-D-Galp-(1→4)-β-D-GlcpNAc-O-CH2]2-C-(CH2OBn)2(12); (ii) the dansylated derivative, α-Neu5Ac-(2→3)-D-Galp-(1→3)-β-D-GlcpNAc-O-(CH2)6-NH-dansyl and; (iii) the tetrasacharide α-Neu5Ac-(2→3)-β-D-Galp-(1→4)-β-D-GlcpNAc- (1→2)-α-D-Manp-O-CH3. Compound 12 was itself prepared from the divalent N-acetyllactosamine molecule built on pentaerythritol by a chemo-enzymatic route. © 2003 Elsevier Science Ltd. All rights reserved.

Author-supplied keywords

  • Baculovirus-infected insect cells
  • Chemo-enzymatic synthesis
  • Enzyme immobilization
  • Recombinant sialyltransferase

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  • anne harduinCNRS, Lille University

  • Tatiana Ivannikova

  • Fabrice Bintein

  • Annie Malleron

  • Sylvie Juliant

  • Martine Cerutti

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