Class: non-standard_residue

A non-standard_residue is a residue that is not a carbohydrate, amino acid or nucleotide. Examples are sulfates and phosphates. A non-standard residue is treated like any other residue, that is, it is an entity that is conceptually separated from the object to which it is attached, and it is linked to the other structure by an intramolecular_link. (See functional_group for a similar but contrasting concept.) A canoncical non-standard residue instance is like a canonical residue instance, in that it is defined by its chemical identity and its context within a canonical representation of a collection of related structures. For example, a canonical sulfate substituent may be linked to a specific position of a specific canonical N-glycan residue. A non-standard residue may be naturally occuring or synthetically introduced. For example, 2-aminopyridine may be a non-standard residue that is attached to the GlcNAc-ol residue of a derivatized N-glycan being analyzed by HPLC or CE.


Super Classes


Disjoint Classes



Class Description/Definition (Necessary Conditions)

contextual_non-standard_residue, fluorescent_derivative_residue, linked_phosphate_residue, lipid_residue
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