heme

== English == === Alternative forms === haem, haeme (UK) === Etymology === Back-formation from hemoglobin. === Pronunciation === (US, UK) IPA(key): /hiːm/ Rhymes: -iːm === Noun === heme (countable and uncountable, plural hemes) (biochemistry) The component of hemoglobin (and other hemoproteins) responsible for binding oxygen. It consists of an iron ion that binds oxygen and a porphyrin ring that binds the globin molecules; one molecule binds one molecule of oxygen. 2008, John Greer, John Foerster, George Rodgers, Fixos Paraskevas, Bertil Glader, Daniel Arber, Robert Means Jr, Wintrobe's Clinical Hematology: Volume One: Twelfth Edition, page 141: The binding of oxygen to the iron molecule causes the hemoglobin molecule to undergo conformational changes that affect the binding of oxygen to other heme sites. ==== Derived terms ==== ==== Related terms ==== hemoglobin ==== Translations ==== === See also === === Further reading === heme on Wikipedia.Wikipedia == Ido == === Pronunciation === IPA(key): /ˈheme/ === Adverb === heme at home == Middle English == === Etymology 1 === Inherited from Old English -hǣme, related to hām (“home; village, community”). This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term. ==== Noun ==== heme (plural heamen) inhabitant, villager ===== Descendants ===== English: heme ==== References ==== “hēme, n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007. === Etymology 2 === From Old English ġehēme. This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term. ==== Adjective ==== heme fitting, suitable ===== Descendants ===== English: heme ==== References ==== “hẹ̄me, adj.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007. === Etymology 3 === ==== Noun ==== heme alternative form of em === Etymology 4 === ==== Pronoun ==== heme alternative form of hem (“them”) === Etymology 5 === ==== Noun ==== heme alternative form of hem (“hem”) == Norwegian Nynorsk == === Pronunciation === IPA(key): /²heːmə/ === Adverb === heme (dialectal, nonstandard) alternative form of heime (“at home”) == Spanish == === Etymology === From he (adverb) +‎ me (pronoun). === Pronunciation === IPA(key): /ˈeme/ [ˈe.me] Rhymes: -eme Syllabification: he‧me === Phrase === heme here I am === Verb === heme inflection of haber: second-person singular imperative combined with me second-person singular voseo imperative combined with me