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折扣/货期| 货号：40-518 | 规格：0.05 mg | 目录价：￥6493.5 |
产品详情
* 以下信息仅供参考，详情请以原厂网站为准
产品名称:
Heregulin-B1 Recombinant Protein
别名:
GGF, HGL, HRG, NDF, ARIA, GGF2, HRG1, HRGA, SMDF, MST131, GGF, Pro-neuregulin-1, membrane-bound isoform, Acetylcholine receptor-inducing activity, Pro-NRG1
表达系统:
E. coli
保存温度:
The lyophilized Heregulin-B1 recombinant protein is stable for at least 2 years from date of receipt at -20˚C. Reconstituted GDF-2 is stable for at least 3 months when stored in working aliquots with a carrier protein at -20˚C. As with any protein, exposing Heregulin-B1 recombinant protein to repeated freeze / thaw cycles is not recommended. When working with proteins care should be taken to keep recombinant protein at a cool and stable temperature.
运输温度:
Blue Ice
产品形式:
Lyophilized
产地:
美国
生产商:
Prosci
功能与背景:
Neuregulin/Heregulin is a family of structurally related polypeptide growth factors derived from alternatively spliced genes (NRG1, NRG2, NRG3 and NRG4). To date, there are over 14 soluble and transmembrane proteins derived from the NRG1 gene. Proteolytic processing of the extracellular domain of the transmembrane NRG1 isoforms release soluble growth factors. HRG1-B1 contains an Ig domain and an EGF-like domain that is necessary for direct binding to receptor tyrosine kinases erb3 and erb4. This binding induces erb3 and erb4 heterodimerization with erb2, stimulating intrinsic kinase activity, which leads to tyrosine phosphorylation. Although HRG1-B1 biological effects is still unclear, it has been found to promote motility and invasiveness of breast cancer cells which may also involve up-regulation of expression and function of the autocrine motility-promoting factor (AMF). Recombinant human Heregulin-B1 (HRG1-B1) is a 7.5 kDa polypeptide consisting of only the EGF domain of heregulin-B1 (65 amino acid residues).
纯度:
Greater than 98% by SDS-PAGE gel and HPLC analyses.
Endotoxin level is less than 0.1 ng per μg (1EU/μg).
Endotoxin level is less than 0.1 ng per μg (1EU/μg).
生物活性:
The ED50 was determined by the dose-dependent stimulation of the proliferation of human MCF-7 cells is ≤ 0.5 ng/mL, corresponding to a specific activity of ≥ 2 x 106 units/mg.
Accession #:
NP_001153468.1
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