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Fully Determined GlyTouCan Glycan Data

glydb_data.Rd

A curated dataset of fully determined glycans from GlyTouCan. "Fully determined" means that all linkages, substituents, anomers, and monosaccharides are fully specified. The dataset is derived from the GlyTouCan v2.9.1 release, with 6960 glycan structures currently available.

Usage

glydb_data

Format

A tibble with 6960 rows and 5 variables:

  • glytoucan_ac: GlyTouCan accession.

  • glycan_structure: Glycan structure (glyrepr::glycan_structure()).

  • glycan_composition: Glycan composition (glyrepr::glycan_composition()).

  • species: Specie names, separated by semicolons. Unknown species are NAs.

  • glycan_type: Glycan type, one of "N", "O-GalNAc", "O-GlcNAc", "O-Man", "O-Fuc", "O-Glc".

Source

https://data.glygen.org

Duplicate Glycan Structures

There are duplicate glycan structures in the dataset, due to the presence of rare monosaccharides in some glycans. For example, Fuc has L configuration in most cases, but in some situations it can have D configuration. glyparse and glyrepr doesn't support this kind of ambiguity for now, so we keep them all in the dataset. However, this situation is rare, and we have 6853 unique glycan structures in the dataset. If you need the detailed information, you can use the glytoucan_ac (GlyTouCan accession) to query the original data.