haem


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to haem: Heam

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]

haem

or

heme

a ring-like chemical structure containing an atom of ferrous iron that is bound as a PROSTHETIC GROUP to each POLYPEPTIDE CHAIN within HAEMOGLOBIN and MYOGLOBIN, giving blood and muscle their characteristic red colour.

haem

iron-containing, oxygen-carrying, red-coloured constituent of haemoglobin

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]

haem

see heme.
References in periodicals archive ?
In this research work, the association between protein intake from haem and non-haem animals and that from plant origin and a series of haematological and biochemical markers relating to low-grade inflammation process was evaluated.
Although most haem in the body is used in the production of haemoglobin, approximately 20% is used to form a component of enzymes, including cytochrome P450 enzymes that are responsible for metabolising a wide range of drugs and metabolites [Badminton and Elder, 2002].
As shown in the pathway of haem synthesis (Figure 1), pyridoxal phosphate is a cofactor for ALAS.
Dietary iron exists in two forms, haem and non-haem.
Calcium was also found to be an inhibitor of both haem and non-haem iron.
2008, Carnitine-mediated improved response to erythropoietin involves induction of haem oxygenase-1: studies in humans and in an animal model.
There are two forms of iron namely haem and non haem iron.
The by-product of this process called haem is toxic to the malaria parasites, carried by mosquitoes, however they convert it into the non-toxic form called haemozoin.
Dietary iron exists in two different forms - haem iron and non-haem iron.
Pb interferes with haem biosynthesis by altering the activity of several mitochondrial and cytosolic enzymes involved in this process.
He elucidated its structure, showing that the blood pigment haem bears a structural resemblance to the porphyrin compound found in chlorophyll.
50) Dietary intakes of alcohol, vitamin C, protein, haem and non-haem iron and fibre were positively associated with iron status.