Erb-B2 Receptor Tyrosine Kinase 2
Mouse Monoclonal Antibody
Immuno-MRM chromatogram of CPTC-ERBB2-3 antibody with CPTC-ERBB2 peptide 4 (NCI ID#00189) as target
NCI Identification Number:
Erb-B2 Receptor Tyrosine Kinase 2
CPTC-ERBB2 Peptide 4
Erb-B2 Receptor Tyrosine Kinase 2; V-Erb-B2 Avian Erythroblastic Leukemia Viral Oncogene Homolog 2; Tyrosine Kinase-Type Cell Surface Receptor HER2; Neuro/Glioblastoma Derived Oncogene Homolog; Human Epidermal Growth Factor Receptor 2; Metastatic Lymph Node Gene 19 Protein; Proto-Oncogene C-ErbB-2; Proto-Oncogene Neu; EC 184.108.40.206; P185erbB2; MLN 19; HER2; NGL; NEU; V-Erb-B2 Avian Erythroblastic Leukemia Viral Oncogene Homolog 2 (Neuro/Glioblastoma Derived Oncogene Homolog); V-Erb-B2 Erythroblastic Leukemia Viral Oncogene Homolog 2, Neuro/Glioblastoma Derived Oncogene Homolog; V-Erb-B2 Avian Erythroblastic Leukemia Viral Oncoprotein 2; Neuroblastoma/Glioblastoma Derived Oncogene Homolog; Receptor Tyrosine-Protein Kinase ErbB-2; C-Erb B2/Neu Protein; CD340 Antigen; HER-2/Neu; Herstatin; EC 2.7.10; CD340; HER-2; MLN19; TKR1
This gene encodes a member of the epidermal growth factor (EGF) receptor family of receptor tyrosine kinases. This protein has no ligand binding domain of its own and therefore cannot bind growth factors. However, it does bind tightly to other ligand-bound EGF receptor family members to form a heterodimer, stabilizing ligand binding and enhancing kinase-mediated activation of downstream signalling pathways, such as those involving mitogen-activated protein kinase and phosphatidylinositol-3 kinase. Allelic variations at amino acid positions 654 and 655 of isoform a (positions 624 and 625 of isoform b) have been reported, with the most common allele, Ile654/Ile655, shown here. Amplification and/or overexpression of this gene has been reported in numerous cancers, including breast and ovarian tumors. Alternative splicing results in several additional transcript variants, some encoding different isoforms and others that have not been fully characterized.
ERBB2 (Erb-B2 Receptor Tyrosine Kinase 2) is a Protein Coding gene. Diseases associated with ERBB2 include Glioma Susceptibility 1 and Ovarian Cancer, Somatic. Among its related pathways are PI-3K cascade-FGFR3 and Interleukin-3, 5 and GM-CSF signaling. GO annotations related to this gene include identical protein binding and protein kinase activity. An important paralog of this gene is EGFR.
UniProtKB/Swiss-Prot for ERBB2 Gene
Protein tyrosine kinase that is part of several cell surface receptor complexes, but that apparently needs a coreceptor for ligand binding. Essential component of a neuregulin-receptor complex, although neuregulins do not interact with it alone. GP30 is a potential ligand for this receptor. Regulates outgrowth and stabilization of peripheral microtubules (MTs). Upon ERBB2 activation, the MEMO1-RHOA-DIAPH1 signaling pathway elicits the phosphorylation and thus the inhibition of GSK3B at cell membrane. This prevents the phosphorylation of APC and CLASP2, allowing its association with the cell membrane. In turn, membrane-bound APC allows the localization of MACF1 to the cell membrane, which is required for microtubule capture and stabilization.
In the nucleus is involved in transcriptional regulation. Associates with the 5-TCAAATTC-3 sequence in the PTGS2/COX-2 promoter and activates its transcription. Implicated in transcriptional activation of CDKN1A; the function involves STAT3 and SRC. Involved in the transcription of rRNA genes by RNA Pol I and enhances protein synthesis and cell growth.
The epidermal growth factor receptor (EGFR) is a receptor tyrosine kinase of the ErbB family. Four members of the ErbB family have been identified; EGFR (ErbB1, HER1), ErbB2 (HER2), ErbB3 (HER3) and ErbB4 (HER4). EGFR signaling drives many cellular responses.
NCBI Accession Number:
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Calculated Isoelectric Point:
No SOPs available.
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