| The extended ASCII nomenclature as recommended by IUPAC is used to input the sequence of complex oligosaccharides. However, some additional input rules have to be fulfilled. In case only the topology and composition of the oligosaccharide is known, a simpler way to input carbohydrate sequences is possible. Since the hydroxyl groups of synthetic carbohydrates are often the are protected we have included a way to indicate if sugar residue are persubstituted. Please have a look at the examples of valid input structures |
/tools/GlycoFragments/HowTo