ectodomain.
The portion of a polypeptide on a cell membrane that extends beyond the membrane into the extracellular space.
Meaning & usage
The portion of a polypeptide on a cell membrane that extends beyond the membrane into the extracellular space.
Where this word comes from
Etymology tree Ancient Greek ἐκ (ek) Ancient Greek ἐντός (entós) Ancient Greek ἐκτός (ektós)der. English ecto- English domain English ectodomain From ecto- + domain.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.