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| Code | CSB-MP016077HU1(F6) |
| Size | $428 |
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| Description |
A construct encoding COOH-terminally 6xHis-tagged human NRG1 was expressed in mammalian cells. The resulting protein is the recombinant NRG1 protein containing amino acid sequence 20-247 of human NRG1. The purity of this NRG1 protein is greater than 95% determined by SDS-PAGE. A molecular mass band of 40 kDa was presented on the gel under reducing conditions. It contains low levels of endotoxin, less than 1.0 EU/ug determined by the LAL method. And this NRG1 protein has also been tested as an active protein through a functional ELISA. It binds to the human ERBB3with an EC50 of 18.24-23.66 ng/ml. It is available now. NRG1 is a trophic factor generated by nerves and muscles. Interaction with its tyrosine kinase transmembrane receptors ErbB1-4, NRG1 regulates myogenesis, muscle spindle development and maintenance, neural development, cardiovascular system development, adult heart functions, glucose transport, mitochondrial oxidative capacity, and acetylcholine receptor expression. |
| Purity | Greater than 95% as determined by SDS-PAGE. |
| Endotoxin | Less than 1.0 EU/ug as determined by LAL method. |
| Activity | Measured by its binding ability in a functional ELISA. Immobilized NRG1 at 2 μg/ml can bind human ERBB3(CSB-MP007765HU), the EC50 is 18.24-23.66 ng/ml. |
| Target Names | NRG1 |
| Uniprot No. | Q02297 |
| Alternative Names | (Pro-NRG1)(GGF)(HGL)(HRGA)(NDF)(SMDF) |
| Molecular Characterization | .svg) |
| Species | Homo sapiens (Human) |
| Source | Mammalian cell |
| Expression Region | 20-247aa |
| Target Protein Sequence | SGKKPESAAGSQSPALPPRLKEMKSQESAAGSKLVLRCETSSEYSSLRFKWFKNGNELNRKNKPQNIKIQKKPGKSELRINKASLADSGEYMCKVISKLGNDSASANITIVESNEIITGMPASTEGAYVSSESPIRISVSTEGANTSSSTSTSTTGTSHLVKCAEKEKTFCVNGGECFMVKDLSNPSRYLCKCPNEFTGDRCQNYVMASFYKHLGIEFMEAEELYQKR |
| Mol. Weight | 27.1 kDa |
| Protein Length | Partial of Isoform 6 |
| Tag Info |
C-terminal 6xHis-tagged |
| Form |
Lyophilized powder Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand. |
| Buffer | Lyophilized from a 0.2 μm filtered 20 mM Tris-HCl, 0.5 M NaCl, 6% Trehalose, pH 8.0 |
| Reconstitution | We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference. |
| Troubleshooting and FAQs |
Protein FAQs |
| Storage Condition | Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles. |
| Shelf Life | The shelf life is related to many factors, storage state, buffer ingredients, storage temperature
and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C. |
| Lead Time | 3-7 business days |
| Notes | Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week. |
| Datasheet & COA | Please contact us to get it. |
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| Function |
Direct ligand for ERBB3 and ERBB4 tyrosine kinase receptors. Concomitantly recruits ERBB1 and ERBB2 coreceptors, resulting in ligand-stimulated tyrosine phosphorylation and activation of the ERBB receptors. The multiple isoforms perform diverse functions such as inducing growth and differentiation of epithelial, glial, neuronal, and skeletal muscle cells; inducing expression of acetylcholine receptor in synaptic vesicles during the formation of the neuromuscular junction; stimulating lobuloalveolar budding and milk production in the mammary gland and inducing differentiation of mammary tumor cells; stimulating Schwann cell proliferation; implication in the development of the myocardium such as trabeculation of the developing heart. Isoform 10 may play a role in motor and sensory neuron development. Binds to ERBB4. Binds to ERBB3. Acts as a ligand for integrins and binds (via EGF domain) to integrins ITGAV:ITGB3 or ITGA6:ITGB4. Its binding to integrins and subsequent ternary complex formation with integrins and ERRB3 are essential for NRG1-ERBB signaling. Induces the phosphorylation and activation of MAPK3/ERK1, MAPK1/ERK2 and AKT1. Ligand-dependent ERBB4 endocytosis is essential for the NRG1-mediated activation of these kinases in neurons.
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| Gene References into Functions |
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| Involvement in disease | A chromosomal aberration involving NRG1 produces gamma-heregulin. Translocation t(8;11) with TENM4. The translocation fuses the 5'-end of TENM4 to NRG1 (isoform 8). The product of this translocation was first thought to be an alternatively spliced isoform. Gamma-heregulin is a soluble activating ligand for the ERBB2-ERBB3 receptor complex and acts as an autocrine growth factor in a specific breast cancer cell line (MDA-MB-175). Not detected in breast carcinoma samples, including ductal, lobular, medullary, and mucinous histological types, neither in other breast cancer cell lines. |
| Subcellular Location | [Pro-neuregulin-1, membrane-bound isoform]: Cell membrane; Single-pass type I membrane protein. Note=Does not seem to be active.; [Neuregulin-1]: Secreted.; [Isoform 8]: Nucleus. Note=May be nuclear.; [Isoform 9]: Secreted. Note=Has a signal peptide.; [Isoform 10]: Membrane; Single-pass type I membrane protein. Note=May possess an internal uncleaved signal sequence. |
| Protein Families | Neuregulin family |
| Tissue Specificity | Type I isoforms are the predominant forms expressed in the endocardium. Isoform alpha is expressed in breast, ovary, testis, prostate, heart, skeletal muscle, lung, placenta liver, kidney, salivary gland, small intestine and brain, but not in uterus, stom |
| Database Links |
HGNC: 7997 OMIM: 142445 KEGG: hsa:3084 STRING: 9606.ENSP00000349275 UniGene: Hs.453951 |
