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| CAS No.: | 9007-73-2 |
|---|---|
| Name: | FERRITIN, HUMAN |
| Molecular Structure: | |
|
|
|
| Formula: | C16H33O2S- |
| Molecular Weight: | 450000 |
| Synonyms: | Ferritin;Ferritins, H (heart-type); Epadora; Ferrofolin; Ferrol; Ferrosprint; Ferrostar;Sanifer; Sideros; Unifer |
| EINECS: | 232-704-0 |
| Appearance: | COA |
| Hazard Symbols: |
 B
|
| Risk Codes: | 22 |
| Safety: | Questionable carcinogen with experimental neoplastigenic data. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes. |
| PSA: | 0.00000 |
| LogP: | 0.00000 |
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Chemistry
Chemistry informtion about Ferritin (CAS NO.9007-73-2) is:
Synonyms: Ferritins ; Ferritin (Spleen) ; Ferritin Type I ; Ferritin Type Iv ; Ferritin Type V ; Ferritin, Human Liver ; Ferritin (Liver) ; Ferritin Horse
Product Categories: Biochemicals and Reagents ; Proteins and Derivatives ; Redox
Molecular Weight: 450000
EINECS: 232-704-0
Storage temp.: 2-8°C
Uses
Ferritin (CAS NO.9007-73-2) is toxic to cells as it acts as a catalyst in the formation of free radicals from reactive oxygen species via the Fenton Reaction. Hence organisms have evolved an elaborate set of protective mechanisms to bind iron in various tissue compartments. Within cells, iron is stored in a protein complex as ferritin or hemosiderin. Apoferritin binds to free ferrous iron and stores it in the ferric state. As Ferritin accumulates within cells of the reticuloendothelial system, protein aggregates are formed as hemosiderin. Iron in ferritin or hemosiderin can be extracted for release by the RE cells although hemosiderin is less readily available. Under steady state conditions, the serum ferritin level correlates with total body iron stores; thus, the serum ferritin FR5Rl is the most convenient laboratory test to estimate iron stores.Ferritin is also used in materials science as a precursor in making iron nanoparticles for carbon nanotube growth by chemical vapor deposition.Mitochondrial ferritin has many roles pertaining to molecular function. It participates in ferroxidase activity, binding, iron ion binding, oxidoreductase activity, ferric iron binding, metal ion binding as well as transition metal binding. Within the realm of biological processes it participates in oxidation-reduction, iron ion transport across membranes and cellular iron ion homeostasis.
Toxicity Data With Reference
| 1. | cyt-ham:ovr 27 mg/L | CNREA8 Cancer Research. 41 (1981),1628. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Questionable carcinogen with experimental neoplastigenic data. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes: 
B
Risk Statements:
R22: Harmful if swallowed.
WGK Germany: 3
RTECS: LK0500000
F 10: Keep under argon.
F 21: Sensitive to humidity.
Specification
Ferritin (CAS NO.9007-73-2) is a red to brown saline solution. And it is a protein that stores iron and releases it in a controlled fashion, in single cells and multi-celled animals. It is a buffer against iron deficiency and iron overload. It is a globular protein complex consisting of 24 protein subunits and is the primary intracellular iron-storage protein in both prokaryotes and eukaryotes, keeping iron in a soluble and non-toxic form. Ferritin that is not combined with iron is called apoferritin.Also, it is a 450 kDa protein consisting of 24 subunits that is present in every cell type. In vertebrates, these subunits are both the light (L) and the heavy (H) type with an apparent molecular weight of 19 kDA or 21 kDA respectively. In plants and bacteria the complex only consists of the H-chain type. Inside the ferritin shell, iron ions form crystallites together with phosphate and hydroxide ions. The resulting particle is similar to the mineral ferrihydrite. Each ferritin complex can store about 4500 iron (Fe3+) ions. Some Ferritin complexes in vertebrates are hetero-oligomers of two highly-related gene products with slightly different physiological properties. The ratio of the two homologous proteins in the complex depends on the relative expression levels of the two genes. Mitochondrial ferritin was recently identified as a protein precursor. It is classified as a metal-binding protein which is located within the mitochondria. After the protein is taken up by the mitochondria it can be processed into a mature protein and assemble functional ferritin shells. Its structure was determined at 1.70 angstroms through the use of X-ray diffraction and contains 182 residues. It is 67% helical. The Ramachandran plot shows that the structure of mitochondrial ferritin is mainly alpha helical with a low prevalence of beta sheets.
Diagnostic uses about Ferritin (CAS NO.9007-73-2) is:
Serum Ferritin levels are measured in patients as part of the iron studies workup for anemia and for restless legs syndrome. The ferritin levels measured have a direct correlation with the total amount of iron stored in the body including cases of anemia of chronic disease. Normal blood levels are 30-300 ng/mL for males and 15-200 ng/mL for females. ((according to clinical medicine by Kumar & Clark page 428)). If the ferritin level is low, there is a risk for lack of iron, which could lead to anemia. Low ferritin levels (<50 ng/mL) have however been associated with the symptoms of restless legs syndrome, even in the absence of anemia. In the setting of anemia, serum ferritin is the most sensitive lab test for iron deficiency anemia. Low ferritin may also indicate hypothyroidism or vitamin C deficiency. In a certain study in Paris, France, the level of iron in the blood (measured by ordering a ferritin serum test) has been connec