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.

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]

heme

(hēm)
n.
A deep red, iron-containing compound, C34H32FeN4O4, that constitutes the nonprotein component of hemoglobin and certain other proteins.

heme

 An iron-containing red pigment which, with a protein, globin, forms hemoglobin

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]

heme

see HAEM.

Heme

The iron-containing molecule in hemoglobin that serves as the site for oxygen binding.

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]
References in periodicals archive ?
While it has been suggested that the blue skeleton of Heliopora originated from biliverdin IX[alpha] (Rudiger et al., 1968), which occurs as a result of heme degradation, to our knowledge there is no evidence that biliverdin IX[alpha] is synthesized in Heliopora.
Venison is characterized by a high content of phospholipids as well as of heme pigments and heme iron, which makes it susceptible to oxidation [3].
The experiments shown here demonstrate that PIC1 can dose-dependently inhibit the peroxidase activity of heme from RBC lysates as well as pure metHb and myoglobin for three different substrates: TMB, ABTS, and O-dianisidine.
Swinkels, "Hepcidin suppression and defective iron recycling account for dysregulation of iron homeostasis in heme oxygenase-1 deficiency," Journal of Cellular And Molecular Medicine, vol.
"We carried out spectroelectrochemical measurements in a LiPF6-containing electrolyte with the same concentration of heme to verify the Li salt effects," the researchers write in Nature Communications.
Caption: Figure 7: The heme and near key residues of Si-Hb I (a), Si-Hb II (b), HRP (c), and MPO (d).
Lucas-Hahn et al., "Transgenic expression of human heme oxygenase-1 in pigs confers resistance against xenograft rejection during ex vivo perfusion of porcine kidneys," Xenotransplantation, vol.
Cytoprotection behind heme oxygenase-1 in renal diseases.
Monthly administration of givosiran has the potential to significantly lower induced liver ALAS1 levels in a sustained manner and thereby decrease neurotoxic heme intermediates, aminolevulinic acid and porphobilinogen, towards normal levels.
I am pleasantly surprised and a little amused that esoteric terms of my vocation such as heme and leghemoglobin have found their way into the public lexicon and on the wrapper of a fast-food sandwich.
Launching of Health Cards heme, five million houses, shelter homes and other people-friendly steps would surely helpful in putting the country on way to progress, he said.