Atlas One · Host Biology · Scale 03 — Molecular

Histamine

Biogenic amine (MW 111) derived from histidine by HDC. Stored in mast cells, basophils, ECL cells, and TMN neurons. Acts on H1–H4 GPCRs mediating allergy, gastric acid secretion, wakefulness, and neuroinflammation.

Also known as: histamine, 2-(4-imidazolyl)ethylamine, β-imidazolylethylamine

Scale 03 — MolecularScale
draftStatus
2026-06-05Last Reviewed
This is an auto-generated stub page built from atlas entry frontmatter. A richer hand-crafted page is planned. See the atlas source for the full entry including detailed body sections.
histamine

Histamine

Biogenic amine (MW 111) derived from histidine by HDC. Stored in mast cells, basophils, ECL cells, and TMN neurons. Acts on H1–H4 GPCRs mediating allergy, gastric acid secretion, wakefulness, and neuroinflammation.