Recombinant Human NRG1-alpha Protein

Description :
FAQ COA 已发表文献 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 Synonyms ARIA; GGF2; HGL; HRG; HRG1; MST131 Accession Q02297 GeneID 3084 Source E.coli-derivedHuman NRG1-, Ser177-Lys241. Molecular Weight Approximately 7.4kDa. AA Sequence SHLVKCAEKE KTFCVNGGEC FMVKDLSNPS RYLCKCQPGF TGARCTENVP MKVQNQEKAE ELYQK Tag None Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder. Purity > 97% by SDS-PAGE and HPLC analyses. Biological Activity The ED50as 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 104IU/mg..Fully biologically active when compared to standard. Endotoxin 0.1EU per 1g of the protein by the LAL method. Formulation Lyophilized from a 0.2 m filtered solution in 20 mM PB, pH 6.0, 150 mM NaCl. Reconstitution 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.