heme

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Related to Haeme: Heme iron

heme

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

[Short for hematin.]

heme

(him)

n.
an unstable, deep red, iron-containing blood pigment, C34H32N4O4Fe, obtained from hemoglobin.
[1920–25; shortening of hemoglobin]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.heme - a complex red organic pigment containing iron and other atoms to which oxygen binds
pigment - dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
haemoglobin, Hb, hemoglobin - a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; function primarily to transport oxygen from the lungs to the body tissues; "fish have simpler hemoglobin than mammals"
myoglobin - a hemoprotein that receives oxygen from hemoglobin and stores it in the tissues until needed
cytochrome - (biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration)
References in periodicals archive ?
Another reason could be the presence of various inhibitory substances present in blood, such as EDTA, the porphyrin ring of haeme, and intracellular substances.
The haeme is further broken down into iron for recycling, carbon monoxide and biliverdin.