Recombinant Human IGF-I/IGF-1, CF (E.coli)

目录号:C0431

打印

Recombinant Human IGF-I/IGF-1 Protein is expressed from E.coli cells.

生物描述

Accession
P05019.1
别名
Insulin-like growth factor I; IGF-I; Mechano growth factor; MGF; Somatomedin-C, IGF1; IBP1
背景
胰岛素样生长因子I(IGF-I 或 IGF-1),亦称生长调节素C,是生长激素的主要效应因子,在结构上与胰岛素原同源。人类IGF-I以两种前体亚型的形式被合成,分别带有N-末端和不同的C-末端前肽,在不同组织中差异性表达。这两种亚型经过蛋白酶切除N-末端和C-末端区域后,产生的7.6 kDa成熟IGF-I是相同的。成熟人IGF-I与小鼠(94%)、大鼠(96%)的IGF-I具有高度氨基酸序列同源性,并表现出跨物种活性。它与成熟人IGF-II的序列一致性也达到64%。循环IGF-I主要由肝细胞产生,而局部IGF-I则由许多其他组织产生,并以旁分泌形式发挥作用。IGF-I在生长发育期及出生后,可诱导多种细胞类型的增殖、迁移和分化。它调节葡萄糖和脂肪酸代谢、类固醇激素活性以及软骨和骨代谢。IGF-I在肌肉再生和肿瘤进展中扮演重要角色。它能与IGF-I受体(IGF-IR)、IGF-II受体及胰岛素受体结合,但其效应主要通过IGF-IR介导。与IGF结合蛋白结合,可延长IGF-I的血浆半衰期,并调节其与受体的相互作用。

使用信息

物种
Human
标签
No tag
来源
E.coli-drived Human IGF-I/IGF-1 Protein AA Gly49-Ala118.
预测分子量
7.7kDa
实际分子量
7.7kDa, reducing conditions
纯度
>95% as determined by Bis-Tris PAGE.
内毒素
< 0.1 EU/ug by the LAL method
制剂
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
复溶方法
开盖前先10,000-12,000 rpm 离心 30 s;向冻干粉中加入无菌PBS,用枪头轻轻吹打混匀,重悬浓度低于 100 μg/mL;复溶之后分装放-80℃保存,避免反复冻融,如要长期储存,建议添加保护剂(如0.1% BSA、5% HSA、10% FBS等)
储存条件 (自收到货起)
For long-term storage, keep the product lyophilized at -20°C or below. Please avoid repeated freeze-thaw cycles. Stability:​ Lyophilized: 12 months (-20°C to -80°C) Reconstituted: 3 months at -80°C under sterile conditions.

Data

Quality Inspection Chart of Recombinant Human IGF-I/IGF-1, CF (E.coli)

Recombinant Human IGF-I/IGF-1, CF (E.coli)on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

Quality Inspection Chart of Recombinant Human IGF-I/IGF-1, CF (E.coli)

Measured in a serum-free cell proliferation assay using MCF-7 human breast cancer cells. The EC50 for this effect is 4.276 ng/mL.