GlycoNAVI: Monosaccharide Recognition

Abstract

A sugar chain is composed of monosaccharide(s) such as glucose containing some chiral carbons. Without considering the stereochemistry of mannose, galactose or glucose, the chemical structures cannot be distinguished. The types of monosaccharide will vary when it include amido, amino and/or carboxyl groups in its chemical structure. Moreover, if a sugar chain includes similar chemical structure(s), the recognition of monosaccharide may not be easy. Besides, in the case of converting a two-dimensional chemical structure drawing into a chair conformer, the recognition of the monosaccharide becomes even more difficult. In this study, we have developed the monosaccharide recognition system which recognizes D-L notation, conformational isomer, 2D projection mode, in addition to the kind of monosaccharide, the anomeric configuration derived from 2D chemical structure expressed in chair type conformation. This system can recognize monosaccharide in most cases. However; the algorithm of this system cannot recognize some exceptional rotational structure of monosaccharide.