| Comment |
This key describes the occurrence of the attachment of a glycan (mono- or polysaccharide) to a residue of the protein. If the nature of the reducing terminal sugar is known, its abbreviation is shown between parentheses. If three dots "..." follow the abbreviation this indicates an extension of the carbohydrate chain. Conversely no dots means that a monosaccharide is linked. The type of linkage (C-, N- or O-linked) to the protein is indicated in the "NOTE" qualifier. Examples of values used in the "NOTE" qualifier: O-linked (GlcNAc); C-linked (Man); N-linked (GlcNAc...); and O-linked (Glc...). |