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 >  Protein>LIF >LIF-H82E2

Biotinylated Human LIF Protein, His,Avitag™

分子别名(Synonym)

LIF,CDF,DIA,HILDA,MLPLI

表达区间及表达系统(Source)

Biotinylated Human LIF, His,Avitag (LIF-H82E2) is expressed from human 293 cells (HEK293). It contains AA Ser 23 - Phe 202 (Accession # P15018-1).

Predicted N-terminus: Ser 23

Request for sequence

蛋白结构(Molecular Characterization)

LIF Structure

This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™)

The protein has a calculated MW of 23.4 kDa. The protein migrates as 37-45 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

标记(Labeling)

Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

蛋白标记度(Protein Ratio)

Passed as determined by the HABA assay / binding ELISA.

内毒素(Endotoxin)

Less than 1.0 EU per μg by the LAL method.

纯度(Purity)

>90% as determined by SDS-PAGE.

制剂(Formulation)

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

重构方法(Reconstitution)

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

存储(Storage)

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

  1. -20°C to -70°C for 12 months in lyophilized state;
  2. -70°C for 3 months under sterile conditions after reconstitution.
 

电泳(SDS-PAGE)

LIF SDS-PAGE

Biotinylated Human LIF, His,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.

 

活性(Bioactivity)-ELISA

LIF ELISA

Immobilized Biotinylated Human LIF, His,Avitag (Cat. No. LIF-H82E2) on SA-coated surface at 1 μg/mL (100 μL/well) can bind Human LIF R, Fc Tag (Cat. No. LIR-H4252) with a linear range of 1-31 ng/mL (QC tested).

Protocol

 

背景(Background)

Leukemia inhibitory factor, or LIF, an interleukin 6 class cytokine, is a protein in cells that affects cell growth and development.Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo.
Removal of LIF pushes stem cells toward differentiation, but they retain their proliferative potential or pluripotency. Therefore LIF is used in mouse embryonic stem cell culture. It is necessary to maintain the stem cells in an undifferentiated state, however genetic manipulation of embryonic stem cells allows for LIF independent growth, notably overexpression of the gene Nanog. LIF is not required for culture of human embryonic stem cells.

 

前沿进展

 
 
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LIF靶点信息
英文全称:Leukemia inhibitory factor
中文全称:白血病抑制因子
种类:Homo sapiens
上市药物数量:0详情
临床药物数量:3详情
最高研发阶段:临床二期
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