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Human STAT3 Protein, His Tag (MALS & SPR verified)

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分子别名(Synonym)

STAT3, signal transducer and activator of transcription 3

表达区间及表达系统(Source)

Human STAT3, His Tag (ST3-H5149) is expressed from E. coli cells. It contains AA Gly 127 - Arg 688 (Accession # P40763-1).

Predicted N-terminus: Met

Request for sequence

蛋白结构(Molecular Characterization)

STAT3 Structure

This protein carries a polyhistidine tag at the N-terminus.

The protein has a calculated MW of 66.4 kDa. The protein migrates as 66-70 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE).

内毒素(Endotoxin)

Less than 1.0 EU per μg by the LAL method.

纯度(Purity)

>95% as determined by SDS-PAGE.

制剂(Formulation)

Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 150 mM NaCl, pH7.5 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)

STAT3 SDS-PAGE

Human STAT3, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).

SEC-MALS

STAT3 SEC-MALS

The purity of Human STAT3, His Tag (Cat. No. ST3-H5149) is more than 85% and the molecular weight of this protein is around 60-75 kDa verified by SEC-MALS.

Report

 

活性(Bioactivity)-SPR

STAT3 SPR

Human STAT3, His Tag (Cat. No. ST3-H5149) immobilized on CM5 Chip can bind STAT3 degrader with an affinity constant of 44.6 nM as determined in a SPR assay (Biacore 8K) (QC tested).

Protocol

 

活性(Bioactivity)-BLI

STAT3 BLI

Loaded Human STAT3, His Tag (Cat. No. ST3-H5149) on NTA Biosensor, can bind STAT3 degrader with an affinity constant of 29.4 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Protocol

 

背景(Background)

Signal transducer and activator of transcription 3 (STAT3) regulates the expression of genes important for essential cellular processes including survival, proliferation, self-renewal, angiogenesis, and immune response. As an early tumor diagnostic marker, it is considered that constitutive STAT3 activation is a sufficient factor to cause malignant transformation and tumor development in model systems. The classical IL-6/STAT3 signaling pathway in cancer cells. IL-6 binds to the membrane-bound IL-6 receptor α (IL-6R) and IL-6 receptor β (also known as gp130). The IL-6/IL-6R/gp130 complex activate the phosphorylation of JAKs, followed by STAT3 phosphorylation and activation. Then, phosphorylated STAT3 forms a homodimer and translocates into the nucleus to bind to the promotor region of target genes and activates target gene transcription.

 

前沿进展

 
 
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STAT3靶点信息
英文全称:Signal transducer and activator of transcription 3
中文全称:信号转导和转录激活因子-3
种类:Homo sapiens
上市药物数量:2详情
临床药物数量:20详情
最高研发阶段:批准上市
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