LIF Protein (AA 23-202)
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北京 101111
Quick Overview for LIF Protein (AA 23-202) (ABIN7275151)
抗原
See all LIF 蛋白蛋白类型
生物活性
宿主
资源
纯度
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产品特性
- AA 23-202
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原理
- Human LIF Protein
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序列
- Ser23-Phe202
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产品特性
- Recombinant Human LIF Protein is expressed from HEK293 without tag.It contains Ser23-Phe202.
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过滤
- 0.22 μm filtered
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内毒素水平
- Less than 0.1 EU per μg by the LAL method.
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Biological Activity Comment
- Immobilized Human LIF at 2ug/ml (100ul/Well) on the plate. Dose response curve for Human LIF R, hFc Tag with the EC50 of 0.10ug/ml determined by ELISA (QC Test).,Human LIF on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.,Determined by its dose-dependent ability to induce reporter gene in 293T-STAT3-Luc2 reporter cells. The ED50-for this effect is 0.2-2 ng/mL.,The purity of Human LIF is greater than 95% as determined by SEC-HPLC.
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限制
- 仅限研究用
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状态
- Lyophilized
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溶解方式
- Dissolve the lyophilized protein in distilled water. It is recommended to resuspend at 0.5 mg/mL if the lyophilized powder is 100 μg or less, at 1 mg/mL for 500 μg or 1 mg lyophilized powder. Do not mix by vortex or vigorous shaking.
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缓冲液
- Lyophilized from 0.22μm filtered solution in PBS ( pH 7.4). Normally 8 % trehalose is added as protectant before lyophilization.
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储存条件
- -20 °C,-80 °C
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储存方法
- -20 to -80°C for 12 months as supplied from date of receipt.,-80°C for 3 months after reconstitution.,Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
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有效期
- 12 months
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- LIF (Leukemia Inhibitory Factor (LIF))
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别名
- LIF
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背景
- Leukemia inhibitory factor (LIF) has played a vital role in a series of reproductive events, including follicle growth, embryo growth and differentiation. However, it is unclear whether the level of LIF in embryo culture medium can be used as a marker for clinical pregnancy.
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分子量
- 19.7 kDa. Due to glycosylation, the protein migrates to 40-55 kDa based on Bis-Tris PAGE result.
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UniProt
- P15018
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途径
- JAK/STAT Signaling, Positive Regulation of Peptide Hormone Secretion, Negative Regulation of Hormone Secretion, Stem Cell Maintenance, Growth Factor Binding
抗原
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