| Species : |
Human |
| Source : |
HEK293 |
| Tag : |
His |
| Protein Length : |
177-241 aa |
| Description : |
NRG1 is one of four proteins in the neuregulin family that act on the EGFR family of receptors. It is known that an extraordinary variety of different isoforms are produced from the NRG1 gene by alternative splicing. These isoforms include heregulins (HRGs), glial growth factors (GGFs) and sensory and motor neuron-derived factor (SMDF). They are tissue-specific and differ significantly in their structure. The HRG isoforms all contain immunoglobulin (Ig) and epidermal growth factor-like (EGF-like) domains. GGF and GGF2 isoforms contain a kringle-like sequence plus Ig and EGF-like domains; and the SMDF isoform shares only the EGF-like domain with other isoforms. The receptors for all NRG1 isoforms are the ERBB family of tyrosine kinase transmembrane receptors. Through their displayed interaction with ERBB receptors, NRG1 isoforms induce the growth and differentiation of epithelial, neuronal, glial, and other types of cells. |
| Form : |
Lyophilized from 0.22 μm filtered solution in 50 mM NaAC, 150 mM NaCl, pH5.0 with trehalose as protectant. |
| Specificity : |
Host Cell DNA: <0.02 ng/μg of protein tested by qPCR.
Sterility: Negative
Mycoplasma: Negative |
| Bio-activity : |
Immobilized Human NRG1 Beta 1 Protein, His Tag, premium grade at 5 μg/mL (100 μL/well) can bind Biotinylated Human ErbB3, His, Avitag with a linear range of 10-313 ng/mL. |
| Molecular Mass : |
The protein has a calculated MW of 9.5 kDa. The protein migrates as 9 kDa under reducing (R) condition, and 9 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under non-reducing (NR) condition (SDS-PAGE). |
| Endotoxin : |
Less than 0.1 EU/μg by the LAL method/rFC method. |
| Purity : |
>95% as determined by SDS-PAGE. |
| Storage : |
This product is stable after storage at: -20 to -70 centigrade for 24 months in lyophilized state; -70 centigrade for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20 centigrade or lower. Please avoid repeated freeze-thaw cycles. |
| Reconstitution : |
It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 μg/μL. Centrifuge the vial at 4 centigrade before opening to recover the entire contents. |
