Recombinant Human LR3-IGF-1 Protein
产品特性
| Synonyms: | Insulin-Like Growth Factor I; IGF-I; Mechano Growth Factor; MGF; Somatomedin-C; IGF1; IBP1 |
| Product Description: | Recombinant Human LR3 Insulin-Like Growth Factor-I is produced by our E.coli expression system and the target gene encoding Gly49-Ala118 is expressed. |
| UniProt ID: | P05019 |
| Species: | Human |
| Expression System: | E.coli |
| Tag: | Tag free |
| Predicted MW: | 9.1 KDa |
| SDS-PAGE: | 11 KDa, reducing conditions |
| Formulation: | Lyophilized from a 0.2 μm filtered solution of 20mM NaAc-HAc, 4% Mannitol, pH 4.5. |
| Endotoxin Level: | Less than 0.05 ng/µg (0.5 EU/µg) as determined by LAL test. |
| Purity: | >95% |
| Reconstitution: | Always centrifuge tubes before opening.Do not mix by vortex or pipetting. |
| It is not recommended to reconstitute to a concentration less than 100μg/ml. | |
| Dissolve the lyophilized protein in distilled water. | |
| Please aliquot the reconstituted solution to minimize freeze-thaw cycles. | |
| Stability and Storage: | Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. |
| Reconstituted protein solution can be stored at 4-7°C for 2-7 days. | |
| Aliquots of reconstituted samples are stable at < -20°C for 3 months. |
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产品背景
IGF-1也称促生长因子C，属于胰岛素基因家族，与胰岛素前体蛋白在结构上类似，具有更好的促生长作用，能促进多数细胞的分裂、迁移和分化。Human LR3 IGF-I（Human Long-R3-IGF-I，人长R3胰岛素样生长因子）是一个含有83个氨基酸的人IGF-1的类似物。与完整的人IGF-1相比，在N端增加了13个氨基酸残基，尤为重要的是第3位氨基酸残基由天然的Glu替换为Arg（因此称为R3）。与人天然的IGF-1相比， LR3 IGF-1大大降低了与人IGF-1结合蛋白的结合能力，游离浓度更高，因而显著提高了生物学活性。 在多数体外试验中，LR3 IGF-1在浓度为0.2-20 ng/ml的范围内就能很好发挥生物学活性。
产品来源
洱畔科技实验室
