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物种
Human分子别名
Somatomedin C,IGF-I,IGF-IA,Mechano growth factor,MGF,Des1-3 Insulin-like Growth factor-1Accession
P05019表达序列
Thr49-Ala118
表达宿主
E.coli分子量
Approximately 7.4 kDa, a non-glycosylated polypeptide chain containing 67 amino acids.纯度
＞98% by SDS-PAGE or HPLC.内毒素含量
<0.01EU/μg活性
Fully biologically active when compared to standard. The EC50 as determined by a cell proliferation assay using serum free human MCF-7 cells is less than 2 ng/ml, corresponding to a specific activity of ≥ 5.0×10⁵ IU/mg.标记
Unconjugated标签
No Tag性状
Lyophilized Powder缓冲体系
20 mM PBS, pH 7.0.
溶解方法
Before use this product, please read the direction below carefully.
This vial must be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in a sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/ml.
Stock solutions should be apportioned into working aliquots and stored at ≤ -20℃.
Further dilutions should be made in appropriate buffered solutions.储存条件
For long term storage, the product should be stored ≤ -20℃.
Please avoid repeated freeze-thaw cycles after reconstitution.
12 months from date of receipt, -20 to -70℃ as supplied.
1 month, 2 to 8℃ under sterile conditions after reconstitution.
3 months, -20 to -70℃ under sterile conditions after reconstitution.
The insulin-like growth factors (IGFs) belonged to the insulin gene family, are mitogenic polypeptide growth factors that stimulate the proliferation and survival of various cell types including muscle, bone, and cartilage tissue in vitro. The IGFs are similar by structure and function to insulin, but have a much higher growth-promoting activity than insulin. IGF-1 is produced primarily by the liver as an endocrine hormone as well as in target tissues in a paracrine/autocrine fashion. Mature human IGF-1 shares 94% and 96% aa sequence identity with mouse and rat IGF-1, respectively, and exhibits cross-species activity. Des1-3IGF-1, is a truncated variant of human IGF-1 with the tripeptide Gly-Pro-Glu absent from the N-terminus. The des1-3IGF-1 probably results from post-translational cleavage of IGF-1. It has about 10-fold more potent than IGF-1 at stimulating hypertrophy and proliferation of cultured cells, a consequence of much reduced binding to IGF-binding proteins, in turn caused by the absence of the glutamate at position 3. Recombinant human des1-3IGF-1 is a non-glycosylated polypeptide chain containing 67 amino acids..
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