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- 详细信息
- 文献和实验
- 技术资料
- 库存:
大量
- 英文名:
Human Liver Ferritin
- 保质期:
1年
- 供应商:
上海沪震实业有限公司
- 保存条件:
-20°C
- 规格:
200μg/1mg/10mg
CATALOGUE NUMBER
PRO-564
INTRODUCTION
Ferritin is the main intracellular iron storage protein in prokaryotes and eukaryotes. Ferritin’s major functions are the storage of iron in a soluble and nontoxic state and its release in a controlled fashion. An iron-containing protein complex is found mostly in the intestinal mucosa, spleen, and liver. Ferritin is composed of 24 subunits of the heavy and light chains. Variation in ferritin subunit composition may influence the rates of iron uptake and release in different tissues. Defects in the light chain ferritin gene are linked to a number of neurodegenerative diseases and hyperferritinemia-cataract syndrome. The genes that encode the light and heavy chains are on located different chromosomes. The light chain genes are in chromosome region 19q13.3-q13.4 whilst those for the heavy chain are in chromosome region 11q12-q13. Ferritin is shaped like a hollow sphere, inside which the iron is stored in the Fe(III) oxidation state. The iron is integrated in the mineral ferrihydrite, [FeO(OH)]8[FeO(H2PO4)], which is attached to the inner wall of the sphere. To release iron once the body needs it, the iron must be altered from the Fe(III) to the Fe(II) oxidation state. Subsequently, the iron leaves through channels in the spherical structure. Therefore, the structure of ferritin is tremendously important for the protein's ability to store and release iron in a controlled mode.The amount of ferritin in the blood (serum ferritin level) is directly related to the amount of iron stored in the body. The body has a "buffer" against iron deficiency (if the blood has too little iron, ferritin can release more) and, to a lesser extent, iron overload (if the blood and tissues of the body have too much iron, ferritin can help store the excess iron).
DESCRIPTION
Ferritin is a glycoprotein produced in Human Liver having a molecular mass of 440- 450kDa and pI of 5.5, which stores iron atoms in the ferric state. It is predominantly intracellular, where it forms an exchangeable pool of iron acting as an iron store. Ferritin level in serum is directly proportional to body iron stores and serum levels are an excellent indicator in monitoring iron status in anemia.It can be used as a marker for inflammation and also used for monitoring and prediction of future events in coronary artery disease.
SOURCE
Human Liver.PHYSICAL APPEARANCE
Sterile Filtered brownish solution.FORMULATION
The protein solution is in 0.05M TRIS buffer pH 7.5 containing 1.0M NaCl and 0.09% NaN3.STABILITY
Human Ferritin should be stored at 2-8°C.PURITY
Greater than 96.0%.HUMAN VIRUS TEST
Tissue sample tested and found negative for HIV-1 & 2 antibodies, Hepatatis B surface antigen, and Hepatatis C antibodies and HIV antigen.USAGE
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文献和实验是一种含铁的复合蛋白质,存在于脾脏,小肠粘膜,肝脏和红骨髓中。可从这些脏器分离到其红褐色的结晶,含有 20-24%的 Fe和 1.2-2%的磷。并认为 Fe是以( FeO· OH) 8 ( FeO· OPO3 H2 )的组成形态存在的。用连次亚硫酸钠处理,能够把不含 Fe的无色蛋白质部分(缺铁铁蛋白)和亚铁分开,得到脱铁的铁蛋白( apo-ferritin)结晶,分子量约 48万(由 20个分子量为 2万 4千个亚基组成)。并认为,在生物体内,铁蛋白是参与铁的贮藏及消化时铁
Determination of Tumor Ferritin Concentration in Breast Cancer
Ferritin is a cellular-storage protein with the main function of sequestering excess ferric iron and thus preventing high concentrations of soluble iron from becoming toxic to the cells. Dividing cells, both normal and neoplastic
铁蛋白抗体技术 ferritin antibody technique
为了在电镜下识别细胞及组织内的抗原部位而采用铁蛋白作标记的抗体的免疫细胞化学技术之一。铁蛋白是含有多量(约 20%)铁的结合蛋白,由直径约 10毫微米的蛋白质外壳及位于中心的直径 5.5毫微米的分子团组成。由于此分子团分成直径 3毫微米的 4个亚单位,在电镜下根据电子密度高的铁颗粒四角形排列是容易辨认其存在的。一般是将同铁蛋白结合的抗体(铁蛋白抗体)作用于先行固定的细胞后,制成超薄切片,用电镜观察。由于铁蛋白是大分子,具有不易透进细胞内这一难题。
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