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Human KIRREL / NEPH1 / KIRREL1 Protein (Fc Tag)

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Human KIRREL Protein Product Information
Protein Construction:A DNA sequence encoding the human KIRREL (NP_060710.3) (Met1-Leu493) was expressed with the Fc region of human IgG1 at the C-terminus.
Expressed Host:Human Cells
Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Human KIRREL Protein QC Testing
Purity:> 95 % as determined by SDS-PAGE
Bio-Activity:Measured by the ability of the immobilized protein to support the adhesion of MS1 mouse pancreatic islet endothelial cells.
When cells are added to KIRREL coated plates (15 μg/mL, 100 μL/well), > 20% will adhere specifically after 90 minutes at 37 ℃.
Endotoxin:< 1.0 EU per μg of the protein as determined by the LAL method
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Gln 17
Molecule Mass:The recombinant human KIRREL/Fc comprises 715 amino acids and has a predicted molecular mass of 78.8 kDa. The apparent molecular mass of the protein is approximately 96.1 kDa in SDS-PAGE under reducing conditions.
Formulation:Lyophilized from sterile PBS, pH 7.4.
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Human KIRREL Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Other KIRREL Recombinant Protein Products
KIRREL1/NEPH1 Background

NEPH1 (KIRREL1) belongs to a family of three closely related transmembrane proteins of the Ig superfamily with a structure similar to that of nephrin. All three Neph proteins share a conserved podocin-binding motif; mutation of a centrally located tyrosine residue dramatically lowers the affinity of Neph1 for podocin. Neph1 triggers AP-1 activation similarly to nephrin but requires the presence of Tec family kinases for efficient transactivation. Neph1 consists of a signal peptide, five Ig-like C2-type domains with the middle domain overlapping with a PKD-like domain, an RGD sequence, a transmembrane domain and a cytoplasmic tail, which is expressed in slit diaphragm domains of podocytes and in vertebrate and invertebrate nervous systems. Neph1 is abundantly expressed in the kidney, specifically expressed in podocytes of kidney glomeruli, and plays a significant role in the normal development and function of the glomerular permeability. Neph1 interacts with nephrin in vitro and in vivo, and able to stimulate transcriptional activation in a model system, such as the activation the transcription factor AP-1 via the stimulation of a MAPK module. Neph1 is crucial for the integrity of the slit diaphragm, as Neph1 gene knockout mice results in effacement of glomerular podocytes, heavy proteinuria, and early postnatal death.

Human KIRREL1/NEPH1 References
  • Sellin L, et al. (2003) NEPH1 defines a novel family of podocin interacting proteins. FASEB J. 17(1): 115-7.
  • Kim EY, et al. (2009) Neph1 regulates steady-state surface expression of Slo1 Ca(2+)-activated K(+) channels: different effects in embryonic neurons and podocytes. Am J Physiol Cell Physiol. 297(6): C1379-88.
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    Catalog: 15752-H02H-50
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