Intrinsic factor (IF), also known as gastric intrinsic factor (GIF), is a glycoprotein produced by the parietal cells of the stomach. It is necessary for the absorption of vitamin B12 l in the ileum of the small intestine. The gastric intrinsic factor protein is encoded by the GIF gene in humans.
LVVSSINNIAENVNHKTYWQFLSGVTPLNEGVADYIPFNHEHITANFTQY with polyhistidine tag at the C-terminus
<0.1 EU per 1 μg of the protein by the LAL method.
>98% as determined by SDS-PAGE. Ni-NTA chromatography
The protein was lyophilized from a solution containing 1X PBS, pH 8.0.
It is recommended to reconstitute the lyophilized protein in sterile H2O to a concentration not less than 100 μg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.
Lyophilized protein should be stored at -20°C. Upon reconstitution, protein aliquots should be stored at -20°C or -80°C.
Please use within one month after protein reconstitution.
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