IMP-507

TEK

Recombinant Human TEK(NP_000450.2)(Ala23-Lys745) is expressed in HEK293, fused with a 6His tag at the C-terminus.

Tie-1/Tie (tyrosine kinase with Ig and EGF homology domains 1) and Tie-2/Tek comprise a receptor tyrosine kinase (RTK) subfamily with unique structural characteristics: two immunoglobulin-like domains flanking three epidermal growth factor (EGF)-like domains and followed by three fibronectin type III-like repeats in the extracellular region and a split tyrosine kinase domain in the cytoplasmic region. These receptors are expressed primarily on endothelial and hematopoietic progenitor cells and play critical roles in angiogenesis, vasculogenesis and hematopoiesis. Human Tie-2 cDNA encodes a 1124 amino acid (aa) residue precursor protein with an 18 residue putative signal peptide, a 727 residue extracellular domain and a 354 residue cytoplasmic domain. Two ligands, angiopoietin-1 (Ang-1) and angiopoietin-2 (Ang-2), which bind Tie-2 with high-affinity have been identified. Ang-2 has been reported to act as an antagonist for Ang-1. Mice engineered to overexpress Ang-2 or to lack Ang-1 or Tie-2 display similar angiogenesis defects.

HEK293

Human

C-His Tag

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

100-120kDa, reducing conditions.

Ala23-Lys745

Less than 0.1 ng/ug (1 EU/ug) as determined by LAL test.

Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks.

Always centrifuge tubes before opening. Do not mix by vortex or pipetting.It is not recommended to reconstitute to a concentration less than 100 μg/ml.Dissolve the lyophilized protein in distilled water.Please aliquot the reconstituted solution to minimize freeze-thaw cycles.