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heme

[heem] /him/
noun, Biochemistry
1.
a deep-red iron-containing blood pigment, C 34 H 32 N 4 O 4 Fe, obtained from hemoglobin.
Origin
1920-1925
1920-25; shortened form of hematin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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hemes in Medicine

heme (hēm)
n.
The deep red, oxygen-carrying, nonprotein, ferrous component of hemoglobin. Also called reduced hematin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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hemes in Science
heme
  (hēm)   
The deep red, nonprotein, iron-containing component of hemoglobin that carries oxygen. Heme is a porphyrin with an iron atom at its center. One of the free valence electrons of the iron atom of heme is bound to the hemoglobin molecule, while the other is available for binding to an oxygen atom. A hemoglobin molecule contains four hemes. Chemical formula: C34H32FeN4O4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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