LIF-HM001 | 价格

LIF-HM001-100μg / 询价

LIF-HM001-500μg / 询价

LIF-HM001-500μgx2 / 询价

Human LIF Protein

产品信息(Product Info)
表达区间及表达系统(Source)

Recombinant Human LIF Protein is expressed from HEK293 without tag.
It contains Ser23-Phe202 [Accession | P15018-1].

分子量大小(Molecular Weight)

The protein has a predicted MW of 19.7 kDa. Due to glycosylation, the protein migrates to 40-55 kDa based on Bis-Tris PAGE result.

纯度(Purity)

> 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC

内毒素(Endotoxin)

Less than 0.1EU per μg by the LAL method.

制剂(Formulation)

Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

重构方法(Reconstitution)

Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

存储(Storage)

-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.

产品数据(Assay Data)
ELISA Data

Immobilized Human LIF at 2μg/ml (100μl/Well) on the plate. Dose response curve for Human LIF R, hFc Tag with the EC50 of 0.17μg/ml determined by ELISA (QC Test).

Bis-Tris PAGE

Human LIF on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.

SEC-HPLC

The purity of Human LIF is greater than 95% as determined by SEC-HPLC.

Cell Based Assay

Determined by its dose-dependent ability to induce reporter gene in 293T-STAT3-Luc2 reporter cells. The ED50 for this effect is 1-5 ng/mL.

背景(Background)

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.

分子别名(Synonyms)

LIF; HILDA; MLPLI; CDF; DIA

文献(References)

(1) Nicola NA, Babon JJ. Leukemia inhibitory factor (LIF). Cytokine Growth Factor Rev. 2015 Oct;26(5):533-44. doi: 10.1016/j.cytogfr.2015.07.001. Epub 2015 Jul 4. PMID: 26187859; PMCID: PMC4581962.

Note: HPLC results always come from liquid protein, due to absorption peak interference of trehalose in lyophilized powder.