Human Heregulin-B1 Recombinant Protein Lyophilized

Human Heregulin-B1 Recombinant Protein Lyophilized from Innovative Research has been recombinantly produced in E. coli. This is a Lyophilized protein buffered in with a purity of Greater than 98% by SDS-PAGE gel and HPLC analyses.

Endotoxin level is less than 0.1 ng per and#956;g (1EU/and#956;g)..

More Details:

• Species: Human
• Target: NRG1
• Purity: Greater than 98% by SDS-PAGE gel and HPLC analyses.
  
  Endotoxin level is less than 0.1 ng per and#956;g (1EU/and#956;g).
• Source: E. coli
• Storage Conditions: 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.

Additional Information:

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).

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This material is sold for in-vitro use only for research. This material is not suitable for human or animal use. While we make every effort to ensure the safety of our products, we recommend handling any biological materials with standard precautions as if capable of spreading infectious disease. The statements herein are offered for informational purposes only to be used solely for your consideration, investigation, and verification.

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