Address: 45-1 Ramsey Road, Shirley, NY 11967, USA    USA: 1-631-559-9269  1-631-448-7888   Fax: 1-631-938-8127  Europe: 44-207-097-1828   Email: info@creative-biomart.com
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Recombinant Human NRG1 protein

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Cat.No.:
NRG1-06H
Product Overview:
Recombinant Human NRG1 was expressed in E. coli.
Description:
Neuregulin 1 belongs to a family of structurally related polypeptide growth factors and is produced in numerous isoforms by alternative splicing, which allows it to perform a wide variety of functions. These isoforms include heregulins (HRGs), glial growth factors (GGFs) and sensory and motor neuron-derived factor (SMDF). They all have the Ig and EGF-like domain, and can bind to ErbB3 and ErbB4 receptor tyrosin kinases. This binding induces ErbB3 and ErbB4 heterodimerization with ErbB2, stimulating intrinsic kinase activity, which leads to tyrosine phosphorylation. NRG1 isoforms have functions of inducing the growth and differentiation of epithelial, neuronal, glial, and other types of cells.
Source:
E. coli
Species:
Human
Form:
Lyophilized from a 0.2 μm filtered solution in PBS, pH 7.4.
Bio-activity:
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using serum free human MCF-7 cells is less than 50 ng/ml, corresponding to a specific activity of > 2.0 × 10^4 IU/mg.
Molecular Mass:
Approximately 7.0 kDa, a single non-glycosylated polypeptide chain containing 61 amino acids.
AA Sequence:
SHLVKCAEKE KTFCVNGGEC FMVKDLSNPS RYLCKCPNEF TGDRCQNYVM ASFYKAEELY Q
Endotoxin:
Less than 1 EU/μg of rHuNRG1-β2 as determined by LAL method.
Purity:
> 96 % by SDS-PAGE and HPLC analyses.
Storage:
This lyophilized preparation is stable at 2-8 centigrade, but should be kept at -20 centigrade for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 centigrade. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 centigrade to -70 centigrade. Avoid repeated freeze/thaw cycles.
Reconstitution:
Reconstitute at 10 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.


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Optional requirements on this protein +Expand
C-fusion   N-fusion  Non-tagged
His   GST  Fc  Others
<1.0 eu/μg   <0.1 eu/μg  <0.01 eu/μg  Not required
Monomer Isolation   Dimer Isolation   Not required
>80% by SDS-PAGE   >90% by SDS-PAGE  >95% by SDS-PAGE  Others
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45-1 Ramsey Road, Shirley, NY 11967, USA
USA: 1-631-559-9269  1-631-448-7888
Europe: 44-207-097-1828
FAX: 1-631-938-8127
EMAIL: info@creative-biomart.com

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