A naturally occurring deaminated neuraminic acid, 3-deoxy-D-glycero-D-galacto-nonulosonic acid (KDN). Its unique occurrence at the nonreducing ends of oligosialyl chains in polysialoglycoprotein of rainbow trout eggs.

@article{Nadano1986ANO,
  title={A naturally occurring deaminated neuraminic acid, 3-deoxy-D-glycero-D-galacto-nonulosonic acid (KDN). Its unique occurrence at the nonreducing ends of oligosialyl chains in polysialoglycoprotein of rainbow trout eggs.},
  author={D Nadano and Mariko Iwasaki and Satoshi Endo and Ken Kitajima and Sadako Inoue and Yashiharu Inoue},
  journal={The Journal of biological chemistry},
  year={1986},
  volume={261 25},
  pages={11550-7}
}
An unknown deaminated sialic acid has been isolated from Salmo gairdneri (rainbow trout) egg polysialoglycoprotein. A combination of structural methods including gas-liquid chromatography, chemical and enzymatic analyses, mass spectrometry, and 400-MHz 1H NMR spectroscopy was used to determine the structure as 2-keto-3-deoxy-D-glycero-D-galacto-nononic acid (= 3-deoxy-D-glycero-D-galacto-nonulosonic acid; KDN). This structure has been confirmed by comparison with a chemically synthesized… CONTINUE READING
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