Hemoproteins

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Related to hemoprotein: flavoprotein, heme protein

Hemoproteins

 

complex proteins containing the pigmented prosthetic group—hemes. Hemoproteins are classified as chromoproteins. In addition to the respiratory pigments—hemoglobin and myoglobin—hemoproteins include widely distributed respiratory enzymes—cytochromes— and oxidative enzymes of tissues—peroxidase, which catalyzes the oxidation of organic substances by hydrogen peroxide, catalase, and leghemoglobin (legoglobin), a pigment found in the root nodules of leguminous plants.

References in periodicals archive ?
43) The oxidized preparation had peaks at 394, 417, 535, 569, and 645 nm, suggesting that both low and high spin species of the hemoprotein (51) existed in the preparation.
1975) Soluble cytochrome P-450 from housefly microsomes: Partial purification and characterization of two hemoprotein forms.
To localize the hemoprotein MPO in the spinotrapezius muscle of rats 24 hr after treatment with saline or 0.
In contrast to cobalt and iron protoporphyrin, ZnPP was found to affect neither heme biosynthetic enzymes nor cellular actions that depend on hemoproteins.
An apparent pink-brown color was obtained for both systems, which may be due to the presence of melanin (the main component of squid ink) and the inherent color of the different organs that are part of the viscera, since usually the internal organs of certain marine organisms have pigments such as carotenes and hemoproteins (Russo et al.
The cytochrome P450s (CYPs) are superfamily of hemoproteins, which metabolise various compounds.
Porphyrias are a variety of disorders, inherited or not, involving the activity of enzymes involved in the synthesis of the heme group and other hemoproteins.
Additional potential effects, as yet unreported, include altered heme homeostasis, leading to changes in hemoproteins such as P450 and thus to alterations in drug metabolism.
Porphyrinogens are the building blocks of all the hemoproteins, such as hemoglobin and the cytochrome enzymes.