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tooluniverse-glycobiology

Glycobiology and glycomics research using GlyGen — glycan structure lookup by GlyTouCan accession, glycan search by mass/monosaccharide-count/type, glycoprotein glycosylation profiles by UniProt accession, glycosylation-site-level detail (position, flanking sequence, attached glycan, co-located SNVs). Use when someone asks about "what glycans are attached to protein X", "N-linked vs O-linked glycosylation sites", "glycan mass/composition search", "GlyTouCan accession lookup", "glycosylation site at position N", or "which proteins have reported glycosylation in human/mouse". NOT for protein sequence/structure retrieval alone (use tooluniverse-sequence-retrieval or tooluniverse-protein-structure-retrieval), NOT for general small-molecule chemistry (use tooluniverse-chemical-compound-retrieval), NOT for post-translational modifications other than glycosylation (use tooluniverse-protein-modification-analysis).

skills/tooluniverse-glycobiology/SKILL.md

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# Glycobiology and Glycomics (GlyGen)

Glycan structure and protein-glycosylation research using GlyGen's 5 ToolUniverse
tools: `GlyGen_get_glycan`, `GlyGen_search_glycans`, `GlyGen_get_glycoprotein`,
`GlyGen_search_glycoproteins`, `GlyGen_get_site`.

**LOOK UP, DON'T GUESS**: Glycan composition, mass, and site-level glycosylation
data are highly specific and not reliably recalled from memory — always resolve
through these tools rather than asserting a glycan's structure or a protein's
glycosylation status from general knowledge.

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## When to Use This Skill
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