heme


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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 ?
An adverse role for heme suggests that finding ways to limit heme exposure or prevent heme toxicity may improve safety of stored red blood cell transfusions,' said co-author of the study Rakesh Patel, Professor at the University of Alabama at Birmingham.
Impossible Foods said: "We genetically engineer yeast to make heme, which then allows us to produce the Impossible Burger with the lowest achievable environmental impact.
Any genetic defects that impact this process can interrupt the body's ability to produce heme; the decreased heme production leads to a buildup of protoporphyrin components.
Heme is best known as a component of oxygen-carrying hemoglobin in red blood cells.
1968), which occurs as a result of heme degradation, to our knowledge there is no evidence that biliverdin IX[alpha] is synthesized in Heliopora.
The antioxidative effect of whey proteins is mainly associated with beta-lactoglobulin and lactoferrin due to their ability to inactivate prooxidative heme proteins (ferrylmyoglobin) and to bind iron [14].
When you breathe in air, the heme molecule absorbs oxygen from the air to your lungs, and when you exhale, it transports carbon dioxide out," Taylor writes.
However, he adds, cooking in water "would not necessarily remove the carcinogenic potential of, for example, heme iron.
Under the company's Molecular Oncology and Cellular Tumor Marker permit, the HEME FISH-based assays was awarded approval for detection of amplifications or rearrangements of DNA in several hematologic cancers, including leukemias, lymphomas and myelomas in order to form a diagnosis and/or to evaluate prognosis or remission of disease.
Heme oxygenase-1 immunostaining was weakly present in tubules of both SHAM and RP groups (Fig.
Acute intermittent porphyria can be precipitated by conditions that increase hepatic heme synthesis such as medications, stress, starvation, severe illness, infection, surgery, smoking, and alcohol.
Heme is severely toxic to the body when released from the haemoglobin molecule, he said.