Description
The neuregulin family of structurally related glycoproteins comprises products from four distinct but related genes, Nrg-1, Nrg-2, Nrg-3, and Nrg-4. All NRG1 isoforms contain an EGF-like domain that is required for their direct binding to the ErbB3 or ErbB4
receptor tyrosine kinases. The ErbB3 or ErbB4 subsequently recruits and heterodimerizes with ErbB2, resulting in tyrosine phosphorylation and NRG1 signaling.
Product Properties
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ARIA; GGF2; HGL; HRG; HRG1; MST131
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Accession
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3084
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Source
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E.coli-derived Human NRG1-α, Ser177-Lys241.
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Molecular Weight
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SHLVKCAEKE KTFCVNGGEC FMVKDLSNPS RYLCKCQPGF TGARCTENVP MKVQNQEKAE ELYQK
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Tag
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None
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Sterile Filtered White lyophilized (freeze-dried) powder.
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| Purity |
> 97 % by SDS-PAGE and HPLC analyses.
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Biological Activity
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The ED50 as determined by a cell proliferation assay using serum free human MCF-7 cells is less than 40 ng/mL, corresponding to a specific activity of ＞ 2.5 × 10 4 IU/mg.. Fully biologically active when compared to standard.
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Endotoxin
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< 0.1 EU per 1μg of the protein by the LAL method.
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Formulation
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Lyophilized from a 0.2 μm filtered solution in 20 mM PB, pH 6.0, 150 mM NaCl.
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We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20℃. Further dilutions should be made in appropriate buffered solutions.
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Storage
The products are shipped with ice pack and can be stored at -20℃ for 1 year.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, -20 °C under sterile conditions after reconstitution.
Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles.
Caution
1. For your safety and health, please wear lab coats and disposable gloves for operation.
2. For research use only!
