ErbB 4 blocking peptide
ErbB 4 Peptide
Contains 1 protein kinase domain.
Tyrosine-protein kinase that plays an essential role as cell surface receptor for neuregulins and EGF family members and regulates development of the heart, the central nervous system and the mammary gland, gene transcription, cell proliferation, differentiation, migration and apoptosis. Required for normal cardiac muscle differentiation during embryonic development, and for postnatal cardiomyocyte proliferation. Required for normal development of the embryonic central nervous system, especially for normal neural crest cell migration and normal axon guidance. Required for mammary gland differentiation, induction of milk proteins and lactation. Acts as cell-surface receptor for the neuregulins NRG1, NRG2, NRG3 and NRG4 and the EGF family members BTC, EREG and HBEGF. Ligand binding triggers receptor dimerization and autophosphorylation at specific tyrosine residues that then serve as binding sites for scaffold proteins and effectors. Ligand specificity and signaling is modulated by alternative splicing, proteolytic processing, and by the formation of heterodimers with other ERBB family members, thereby creating multiple combinations of intracellular phosphotyrosines that trigger ligand- and context-specific cellular responses. Mediates phosphorylation of SHC1 and activation of the MAP kinases MAPK1/ERK2 and MAPK3/ERK1. Isoform JM-A CYT-1 and isoform JM-B CYT-1 phosphorylate PIK3R1, leading to the activation of phosphatidylinositol 3-kinase and AKT1 and protect cells against apoptosis. Isoform JM-A CYT-1 and isoform JM-B CYT-1 mediate reorganization of the actin cytoskeleton and promote cell migration in response to NRG1. Isoform JM-A CYT-2 and isoform JM-B CYT-2 lack the phosphotyrosine that mediates interaction with PIK3R1, and hence do not phosphorylate PIK3R1, do not protect cells against apoptosis, and do not promote reorganization of the actin cytoskeleton and cell migration. Proteolytic processing of isoform JM-A CYT-1 and isoform JM-A CYT-2 gives rise to the corresponding soluble intracellular domains (4ICD) that translocate to the nucleus, promote nuclear import of STAT5A, activation of STAT5A, mammary epithelium differentiation, cell proliferation and activation of gene expression. The ERBB4 soluble intracellular domains (4ICD) colocalize with STAT5A at the CSN2 promoter to regulate transcription of milk proteins during lactation. The ERBB4 soluble intracellular domains can also translocate to mitochondria and promote apoptosis.
NCBI and Uniprot Product Information
NCBI Description
This gene is a member of the Tyr protein kinase family and the epidermal growth factor receptor subfamily. It encodes a single-pass type I membrane protein with multiple cysteine rich domains, a transmembrane domain, a tyrosine kinase domain, a phosphotidylinositol-3 kinase binding site and a PDZ domain binding motif. The protein binds to and is activated by neuregulins and other factors and induces a variety of cellular responses including mitogenesis and differentiation. Multiple proteolytic events allow for the release of a cytoplasmic fragment and an extracellular fragment. Mutations in this gene have been associated with cancer. Alternatively spliced variants which encode different protein isoforms have been described; however, not all variants have been fully characterized. [provided by RefSeq, Jul 2008]
Uniprot Description
HER4: a receptor tyrosine kinase of the EGFR family. Specifically binds and is activated by neuregulins, NRG- 2, NRG-3, heparin-binding EGF-like growth factor, betacellulin and NTAK. Heterodimerizes and signals with other EGF receptors. Interaction with these factors induces cell differentiation. Not activated by EGF, TGF-A, and amphiregulin. Interacts with PDZ domains of DLG2, DLG3, DLG4 and the syntrophin SNTB2. Interacts with WWOX. May act as a tumor suppressor: overexpressed in head and neck cancer , but downregulated in renal cancer, papillary carcinoma, high-grade gliomas and invasive breast cancer. 3 alternatively-spliced isoforms of the human protein have been reported.
Protein type: EC 2.7.10.1; Kinase, protein; Protein kinase, tyrosine (receptor); Membrane protein, integral; Protein kinase, TK; TK group; EGFR family
Chromosomal Location of Human Ortholog: 2q33.3-q34
Cellular Component: basolateral plasma membrane; cytosol; extracellular region; integral to membrane; mitochondrial matrix; mitochondrion; nucleoplasm; nucleus; plasma membrane; receptor complex
Molecular Function: ATP binding; epidermal growth factor receptor binding; phosphatidylinositol-4,5-bisphosphate 3-kinase activity; protein binding; protein homodimerization activity; protein-tyrosine kinase activity; Ras guanyl-nucleotide exchange factor activity; receptor signaling protein tyrosine kinase activity; transmembrane receptor protein tyrosine kinase activity
Biological Process: cell fate commitment; cell migration; cell proliferation; central nervous system morphogenesis; embryonic pattern specification; heart development; lactation; MAPKKK cascade; mitochondrial fragmentation during apoptosis; negative regulation of apoptosis; negative regulation of cell proliferation; nervous system development; neural crest cell migration; olfactory bulb interneuron differentiation; peptidyl-tyrosine phosphorylation; phosphoinositide phosphorylation; phosphoinositide-mediated signaling; positive regulation of cardiac muscle cell proliferation; positive regulation of cell proliferation; positive regulation of GTPase activity; positive regulation of phosphoinositide 3-kinase activity; positive regulation of phosphoinositide 3-kinase cascade; positive regulation of protein amino acid phosphorylation; positive regulation of transcription, DNA-dependent; positive regulation of tyrosine phosphorylation of Stat5 protein; protein amino acid autophosphorylation; regulation of cell migration; regulation of phosphoinositide 3-kinase cascade; signal transduction; transcription, DNA-dependent; transmembrane receptor protein tyrosine kinase signaling pathway
Disease: Amyotrophic Lateral Sclerosis 19
Research Articles on ErbB 4
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Product Notes
The ErbB 4 erbb4 (Catalog #AAA543810) is a Blocking Peptide and is intended for research purposes only. The product is available for immediate purchase. AAA Biotech's ErbB 4 can be used in a range of immunoassay formats including, but not limited to, Immunodepletion, Immunocompetition. Western Blot: 1:500. Researchers should empirically determine the suitability of the ErbB 4 erbb4 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "ErbB 4, Blocking Peptide" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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