Human HER3 (544-643) Protein, hFc Tag

Description :Recombinant human HER3 (544-643) Protein with C-terminal human Fc tagBackground : This gene encodes a member of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. This membrane-bound protein has a neuregulin binding domain but not an active kinase domain. It therefore can bind this ligand but not convey the signal into the cell through protein phosphorylation. However, it does form heterodimers with other EGF receptor family members which do have kinase activity. Heterodimerization leads to the activation of pathways which lead to cell proliferation or differentiation. Amplification of this gene and/or overexpression of its protein have been reported in numerous cancers, including prostate, bladder, and breast tumors. Alternate transcriptional splice variants encoding different isoforms have been characterized. One isoform lacks the intermembrane region and is secreted outside the cell. This form acts to modulate the activity of the membrane-bound form. Additional splice variants have also been reported, but they have not been thoroughly characterized. Molecular Characterization: mass of 36.8 kDa after removal of the signal peptide. The apparent molecular mass of HER3 (544-643) -hFc is approximately 35-55 kDa due to glycosylation.Tag :C-Human Fc tag