Intrinsic Factor Protein, Human, Recombinant (His)

Gastric intrinsic factor, also known as GIF, belongs to the of the cobalamin transport protein family. It is a glycoprotein produced by the parietal cells of the stomach. Gastric intrinsic factor plays a key role in the absorption of vitamin B12 on in the small intestine. Vitamin B12 bounds to haptocorrin after entry into the stomach. The resulting complex enters the duodenum, where pancreatic enzymes digest haptocorrin. In the less acidic environment of the small intestine, B12 can then bind to gastric intrinsic factor. This new complex travels to the ileum, where special epithelial cells endocytose them. Inside the cell, B12 dissociates once again and binds to another protein, transcobalamin II. The new complex can exit the epithelial cells to enter the liver.

Intrinsic Factor Protein, Human, Recombinant (His)

パッケージサイズ	在庫状況	単価(税別)
50 μg	在庫あり	￥ 88,500
100 μg	約5 days	￥ 137,500
200 μg	約5 days	￥ 212,500
500 μg	約5 days	￥ 376,500

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生物学的情報

Testing in progress

説明

Species	Human
Expression Host	HEK293 Cells
Tag	C-His
Accession Number	P27352-1
別名	IF, IFMH, gastric intrinsic factor (vitamin B synthesis), INF, TCN3
Construction	The Human GIF (P27352-1) (Met1-Tyr417) was expressed with a polyhistidine tag at the C-terminus.
Protein Purity	> 95 % as determined by SDS-PAGE
分子量	44.8 kDa (predicted)

Endotoxin	< 1.0 EU/μg of the protein as determined by the LAL method.
Formulation	Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization.
Reconstitution	A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information.
Stability & Storage	It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at-80℃. For reconstituted proteinsolutions, the solution can be stored at -20°c to -80'c for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
Shipping	In general, Lyophilized powders are shipping with blue ice.
Research Background	Gastric intrinsic factor, also known as GIF, belongs to the of the cobalamin transport protein family. It is a glycoprotein produced by the parietal cells of the stomach. Gastric intrinsic factor plays a key role in the absorption of vitamin B12 on in the small intestine. Vitamin B12 bounds to haptocorrin after entry into the stomach. The resulting complex enters the duodenum, where pancreatic enzymes digest haptocorrin. In the less acidic environment of the small intestine, B12 can then bind to gastric intrinsic factor. This new complex travels to the ileum, where special epithelial cells endocytose them. Inside the cell, B12 dissociates once again and binds to another protein, transcobalamin II. The new complex can exit the epithelial cells to enter the liver.

参考文献

1. Gerdin AK. (2010) The Sanger Mouse Genetics Programme: high throughput characterisation of knockout mice. Acta Opthalmologica. 88:925-7. 2. AU - Berlin H, et al. (1968) ORAL TREATMENT OF PERNICIOUS ANEMIA WITH HIGH DOSES OF VITAMIN B12 WITHOUT INTRINSIC FACTOR. Acta Medica Scandinavica. 184(1-6):247-58. 3. Hewitt JE, et al. (1991) Human gastric intrinsic factor: characterization of cDNA and genomic clones and localization to human chromosome 1Genomics. 10(2):432-40.

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Intrinsic Factor Protein, Human, Recombinant (His)

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