heme

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heme

 [hēm]
the nonprotein, insoluble, iron protoporphyrin constituent of hemoglobin, of various other respiratory pigments, and of many cells, both animal and vegetable. It is an iron compound and constitutes the pigment portion or protein-free part of the hemoglobin molecule, and is responsible for its oxygen-carrying properties.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

heme

(hēm),
1. The porphyrin chelate of iron in which the iron is Fe(II) (or Fe2+); the oxygen-carrying, color-furnishing, prosthetic group of hemoglobin.
2. Iron complexed with nonporphyrins but related tetrapyrrole structures (for example, biliverdin heme).
3. Iron chelated with any porphyrin, irrespective of the valence state of the iron atom.
[G. haima, blood]
Farlex Partner Medical Dictionary © Farlex 2012

heme

(hēm)
n.
A deep red, iron-containing compound, C34H32FeN4O4, that constitutes the nonprotein component of hemoglobin and certain other proteins.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

heme

 An iron-containing red pigment which, with a protein, globin, forms hemoglobin
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

heme

(hēm)
1. The porphyrin chelate of iron in which the iron is Fe(II) (Fe2+); the oxygen-carrying, color-furnishing, prosthetic group of hemoglobin.
2. Iron complexed with nonporphyrins but related tetrapyrrole structures (e.g., biliverdin heme).
Synonym(s): reduced hematin, haem.
[G. haima, blood]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

heme

see HAEM.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Heme

The iron-containing molecule in hemoglobin that serves as the site for oxygen binding.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

heme

(hēm)
1. The oxygen-carrying, color-furnishing, prosthetic group of hemoglobin.
2. Iron complexed with nonporphyrins but related tetrapyrrole structures.
Synonym(s): reduced hematin, haem.
[G. haima, blood]
Medical Dictionary for the Dental Professions © Farlex 2012