Biological activity was determined by the dose dependent growth suppression of the human acute monocytic leukemia cell line, THP - 1. sDLL - 1 inhibits the proliferation in THP - 1 cells using a concentration of 3.0 - 5.0 μg/mL.
Pureté
< 95 % by SDS-PAGE gel and HPLC analyses.
niveau d'endotoxine
Endotoxin level is less than 0.1 ng per μg (1 EU/μg).
DLL1
Origine: Humain
Hôte: HEK-293 Cells
Recombinant
> 95 % as determined by reducing SDS-PAGE.
Active
Restrictions
For Research Use only
Format
Lyophilized
Conseil sur la manipulation
As with any protein, exposing sDLL-1 recombinant protein to repeated freeze / thaw cycles is not recommended. When working with proteins care should be taken to keep recombinant protein at a cool and stable temperature.
Stock
-20 °C
Stockage commentaire
The recombinant protein is stable for at least 2 years from date of receipt at -20 °C. Reconstituted sDLL-1 is stable for at least 3 months when stored in working aliquots with a carrier protein at -20 °C.
Human sDLL-1 comprises the extracellular signaling domain of DLL1, a member of a structurally-related family of single-pass type I trans-membrane proteins that serve as ligands for Notch receptors. It is expressed in the heart and pancreas, and to a lesser extent in various other tissues. DLL-1 functions to specifically activate the Notch-1 and Notch-2 receptors. The Notch signaling pathway regulates endothelial-cell differentiation, proliferation and apoptosis, and is essential for the development, maintenance and remodeling of the vascular system. DLL-1 suppresses differentiation of hematopoietic progenitor cells into the B-cell lineage while promoting differentiation to T-cell and NK cell precursors. Recombinant human sDLL-1 is a 57.0-60.0 kDa glycoprotein containing 522 amino-acid residues.