heme

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|biochemistry}} The [[component]] of [[hemoglobin]] (and other [[hemoprotein]]s) responsible for [[bind]]ing [[oxygen]]. It consists of an [[iron]] [[ion]] that binds oxygen and a [[porphyrin]] [[ring]] that binds the [[globin]] [[molecule]]s; one molecule binds one molecule of oxygen.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.