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2. Non-heme iron protein - Wikipedia

   en.wikipedia.org/wiki/Non-heme_iron_protein

   Some non-heme iron proteins contain one Fe at their active sites, others have pairs of Fe centers: Many mono-Fe proteins are alpha-ketoglutarate-dependent hydroxylases . Major examples are the lipoxygenases , isopenicillin N synthase , protocatechuate 3,4-dioxygenase , deacetoxycephalosporin-C synthase , [ 1 ] and aromatic amino acid hydroxylases .

3. Heme - Wikipedia

   en.wikipedia.org/wiki/Heme

   Heme (American English), or haem (Commonwealth English, both pronounced /hi:m/ HEEM), is a ring-shaped iron-containing molecular component of hemoglobin, which is necessary to bind oxygen in the bloodstream. It is composed of four pyrrole rings with 2 vinyl and 2 propionic acid side chains. [1] Heme is biosynthesized in both the bone marrow and ...

4. Iron-binding proteins - Wikipedia

   en.wikipedia.org/wiki/Iron-binding_proteins

   Iron-binding proteins are carrier proteins and metalloproteins that are important in iron metabolism [1] and the immune response. [2] [3] Iron is required for life.Iron-dependent enzymes catalyze a variety of biochemical reactions and can be divided into three broad classes depending on the structure of their active site: non-heme mono-iron, non-heme diiron , or heme centers. [4]

5. Hemoprotein - Wikipedia

   en.wikipedia.org/wiki/Hemoprotein

   The serum iron pool maintains iron in soluble form, making it more accessible for cells. [3] Oxygen (O 2), nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H 2 S) bind to the iron atom in heme proteins. Once bound to the prosthetic heme groups, these molecules can modulate the activity/function of those hemeproteins, affording ...

6. Metalloprotein - Wikipedia

   en.wikipedia.org/wiki/Metalloprotein

   The differences between those cytochromes lies in the different side-chains. For instance cytochrome a has a heme a prosthetic group and cytochrome b has a heme b prosthetic group. These differences result in different Fe 2+ /Fe 3+ redox potentials such that various cytochromes are involved in the mitochondrial electron transport chain.

7. Trace metal - Wikipedia

   en.wikipedia.org/wiki/Trace_metal

   Roughly 5 grams of iron are present in the human body and is the most abundant trace metal. [1] It is absorbed in the intestine as heme or non-heme iron depending on the food source. Heme iron is derived from the digestion of hemoproteins in meat. [4] Non-heme iron is mainly derived from plants and exist as iron(II) or iron(III) ions. [4]

8. Heme iron found in red meat, animal products may raise ... - AOL

   www.aol.com/heme-iron-found-red-meat-095100748.html

   Scientists have found a link between heme iron and type 2 diabetes risk. ATU Images/Getty Images This article originally appeared on Medical News Today. Higher intake of heme iron, which is found ...

9. Hemoglobin - Wikipedia

   en.wikipedia.org/wiki/Hemoglobin

   However, the complex of oxygen with heme iron is diamagnetic, whereas both oxygen and high-spin iron(II) are paramagnetic. Experimental evidence strongly suggests heme iron is in the iron(III) oxidation state in oxyhemoglobin, with the oxygen existing as superoxide anion (O 2 •−) or in a covalent charge-transfer complex. [58]