Neuregulin/Heregulin-1β (NRG-1β/HRG-1β), human recombinant protein
NGR beta 1, Heregulin, HRG 1beta, Neuregulin, Neuregulin1 (NRG1-β1), Neu differentiation factor, Pro
|Calculated MW||7.86 kDa|
|Other Names||NGR beta 1, Heregulin, HRG 1beta, Neuregulin, Neuregulin1 (NRG1-β1), Neu differentiation factor, Pro-neuregulin-1, Acetylcholine receptor-inducing activity, Breast cancer cell differentiation factor p45, Glial growth factor, Heregulin, Neu differentiation factor, Sensory and motor neuron-derived factor|
|Application Notes||Reconstitute in H₂O to a concentration of 0.1-1.0 µg/ µl. The solution can then be diluted into other aqueous buffers and stored at 4°C for 1 week or –20°C for future use.|
|Storage||-20°C; < 0.5 ng/ml|
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Provided below are standard protocols that you may find useful for product applications.
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-β1 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-β1 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-β1 (HRG1-β1) is a 7.5 kDa polypeptide consisting of only the EGF domain of heregulin-β1 (65 amino acid residues).
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Halleck A.,et al.Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases.
Mural R.J.,et al.Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases.
Avril L.E.,et al.FEBS Lett. 345:81-86(1994).
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