Atlas One · Host Biology · Scale 03 — Molecular

Immunoglobulin G

Y-shaped tetrameric antibody (2 heavy + 2 light chains) — the most abundant serum immunoglobulin (~10–15 mg/mL), with ~21-day half-life. Four subclasses (IgG1–4). Principal mediator of humoral immunity and vaccine-elicited protection.

Also known as: IgG, gamma-globulin, antibody IgG

Scale 03 — MolecularScale
draftStatus
2026-06-04Last Reviewed
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immunoglobulin-g

Immunoglobulin G

Y-shaped tetrameric antibody (2 heavy + 2 light chains) — the most abundant serum immunoglobulin (~10–15 mg/mL), with ~21-day half-life. Four subclasses (IgG1–4). Principal mediator of humoral immunity and vaccine-elicited protection.

Entry Metadata

FieldValue
IDimmunoglobulin-g
NameImmunoglobulin G
Statusdraft
Last reviewed2026-06-04
Atlas01-human
Scale03-molecular

Cross-Atlas Connections

expressed-byPlasma Cell targetsSars Cov 2 targetsInfluenza A part-ofImmune System targetsHiv 1 targetsHepatitis B Virus targetsStreptococcus Pneumoniae connects-toMyasthenia Gravis connects-toFcrn connects-toImmune Thrombocytopenia connects-toCidp connects-toDermatomyositis connects-toAnca Vasculitis connects-toDesmoglein 3 connects-toPemphigus Vulgaris connects-toBeta2 Glycoprotein 1 connects-toAntiphospholipid Syndrome connects-toAdamts13 connects-toThrombotic Thrombocytopenic Purpura connects-toHemophilia A connects-toPlacenta

Sources