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ErbB4/HER4 (His Tagged), Human recombinant protein

ErbB4/HER4 (His Tagged), Human Recombinant

Product info
Primary Accession Q15303
Calculated MW The recombinant human ErbB4/Fc is a disulfide-linked homodimeric protein after proteolytic removal of the signal peptide. The reduced monomer consists of 871 amino acids with a predicted molecular mass of 97.5 kDa. As a result of glycosylation, the rh ErbB4/Fc monomer migrates as approximately 125-135 kDa band in SDS-PAGE under reducing conditions.
Additional Info
Gene ID 2066
Gene Symbol ERBB4
Other Names HER4, MGC138404, p180erbB4, ERBB4
Gene Source Human
Source Human
Assay&Purity SDS-PAGE; ≥95%
Assay2&Purity2 HPLC;
Recombinant Yes
Target/Specificity ERBB4
Format Lyophilized
Storage -80°C; Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
Citations (0)

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ErbB4, also known as Her4, is a member of the tyrosine kinase receptors (RTK) and the epidermal growth factor receptor (EGFR) subfamily, and appears to play important roles in differentiation, development and certain carcinomas. It is a single transmembrane-span type I glycoprotein structurally consisting of multiple cysteine rich domains, a transmembrane domain, a tyrosine kinase domain, a phosphotidylinositol-3 (PI-3) kinase binding site and a PDZ domain binding motif. However, the last two domains are absent in one of the two naturally occurring ErbB4 isoforms, ErbB4 CYT-2. ErbB4 ligands include the neuregulins, betacellulin and heparin-binding EGF-like growth factor (HB-EGF). Typically, heterodimerization of ErbB4 with ErbB2 forms the high affinity receptor complex, and subsequently transmit cellular signals by activating downstream src homology-2 (SH2) and phosphotyrosine binding (PTB) domain-containing signaling molecules. ErbB4 undergoes sequential processing by TNF-α converting enzyme (TACE) and presenilin-dependent gamma-secretase to release the ErbB4 ICD (4ICD) with the NLS sequence which is essential for nuclear accumulation of 4ICD. It has been shown that the ligand-induced proteolytic process of ErbB4 results in the accumulation of 4ICD and cytochrome c efflux, and directly couples a cell surface signal to the tumor cell mitochondrial apoptotic pathway. Accordingly, in contrast to the other three members of the EGFR family, ErbB4 expression seems to be selectively lost in tumors with aggressive phenotypes.


Plowman G.D.,et al.Proc. Natl. Acad. Sci. U.S.A. 90:1746-1750(1993).
Elenius K.,et al.J. Biol. Chem. 272:26761-26768(1997).
Totoki Y.,et al.Submitted (MAR-2005) to the EMBL/GenBank/DDBJ databases.
Culouscou J.-M.,et al.J. Biol. Chem. 268:18407-18410(1993).
Plowman G.D.,et al.Nature 366:473-475(1993).

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$ 195.00
Cat# PBV11344r
Availability: 5-7days
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