different between heme vs apomyoglobin

English

Alternative forms

• haem (British)

Etymology

Back-formation from hemoglobin.

Pronunciation

• (US, UK) IPA^(key): /hi?m/
• Rhymes: -i?m

Noun

heme (countable and uncountable, plural hemes)

1. (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.

   • 2018, Ruth Reichl, Silvia Killingsworth, The Best American Food Writing 2018, Mariner Books (?ISBN), page 152:

     Impossible's breakthrough was in discovering that meat's essence comes from heme—the iron-rich molecule in blood that carries oxygen and is responsible for the deep-red color.

Derived terms

Related terms

• hemoglobin

See also

• bilirubin
• red blood cell

Translations

Further reading

• heme on Wikipedia.Wikipedia

Ido

Pronunciation

• IPA^(key): /?heme/

Adverb

heme

1. at home

Middle English

Etymology 1

Related to Old English h?m (“home; village, community”). This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

Noun

heme (plural heamen)

1. inhabitant, villager

Descendants

• English: heme

References

• “h?me, n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.

Etymology 2

From Old English ?eh?me. This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

Adjective

heme

1. fitting, suitable

Descendants

• English: heme

References

• “h??me, adj.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.

Etymology 3

Pronoun

heme

1. Alternative form of hem (“them”)

Etymology 4

Noun

heme

1. Alternative form of hem (“hem”)

Norwegian Nynorsk

Pronunciation

• IPA^(key): /²he?m?/ (example of pronunciation)

Adverb

heme

1. (dialectal, nonstandard) alternative form of heime (“at home”)

Spanish

Etymology

From he (adverb) +? me (pronoun).

Pronunciation

• IPA^(key): /?eme/, [?e.me]

Phrase

heme

1. here I am

English

Etymology

apo- +? myoglobin

Noun

apomyoglobin (uncountable)

1. (biochemistry) A form of myoglobin that lacks a heme unit

Translations

See also

• holomyoglobin