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Hemin is protoporphyrin IX containing a ferric iron (Fe 3+) ion with a coordinating chloride ligand. Chemically, hemin differs from the related heme-compound hematin chiefly in that the coordinating ion is a chloride ion in hemin, whereas the coordinating ion is a hydroxide ion in hematin. [ 2 ]
Structure of hematin. Haematin (also known as hematin, ferriheme, hematosin, hydroxyhemin, oxyheme, phenodin, or oxyhemochromogen) is a dark bluish or brownish pigment containing iron in the ferric state, obtained by the oxidation of haem.
The definition is loose, and many depictions omit the axial ligands. [6] Among the metalloporphyrins deployed by metalloproteins as prosthetic groups , heme is one of the most widely used [ 7 ] and defines a family of proteins known as hemoproteins .
Haemophilus is a genus of Gram-negative, pleomorphic, coccobacilli bacteria belonging to the family Pasteurellaceae. [2] [3] While Haemophilus bacteria are typically small coccobacilli, they are categorized as pleomorphic bacteria because of the wide range of shapes they occasionally assume.
Hemin(Hematin) Hematin and heme arginate is the treatment of choice during an acute attack. Heme is not a curative treatment, but can shorten attacks and reduce the intensity of an attack. Side-effects are rare but can be serious. [citation needed] Pain is extremely severe and almost always requires the use of opiates to reduce it to tolerable ...
Haemophilus influenzae requires hemin and NAD for growth. In this culture, Haemophilus has only grown around the paper disc that has been impregnated with these factors. No bacterial growth is seen around the discs that only contain either hemin or NAD. Chest X-ray of a case of Haemophilus influenzae, presumably as a secondary infection from ...
Binding of oxygen to a heme prosthetic group, which would be part of a hemoprotein. A hemeprotein (or haemprotein; also hemoprotein or haemoprotein), or heme protein, is a protein that contains a heme prosthetic group. [1]
Chocolate agar showing Francisella tularensis colonies Comparison of two culture media types used to grow Neisseria gonorrhoeae bacteria. Known as overgrowth, the nonselective chocolate agar medium on the left, due to its composition, allowed for the growth of organismal colonies other than those of N. gonorrhoeae, while the selective Thayer–Martin medium on the right, containing ...