Recombinant Human Angiopoietin-like 7 Biotin Protein, CF

  
  • Purity
    >95%, by SDS-PAGE with silver staining.
  • Endotoxin Level
    <1.0 EU per 1 μg of the protein by the LAL method.
  • Activity
    Measured by its ability to promote the expansion of E16 rat liver mononuclear cells in vitro, in the presence of Recombinant Mouse SCF/c‑kit Ligand (Catalog # 455-MC), Recombinant Mouse Thrombopoietin/Tpo (Catalog # 488-TO), and Recombinant Mouse Flt‑3 Ligand (Catalog # 427-FL). The ED50 for this effect is 50-200 ng/mL in the presence of a cross‑linking antibody, Mouse Anti-polyHistidine Monoclonal Antibody (Catalog # MAB050).
  • Source
    Chinese Hamster Ovary cell line, CHO-derived Gln27-Pro346, with a C-terminal 10-His tag
  • Accession #
  • N-terminal Sequence
    Analysis
    No results: Gln27 predicted, sequencing might be blocked
  • Structure / Form
    Oligomer, Biotinylated on protein carbohydrates
  • Predicted Molecular Mass
    39 kDa (unlabeled)
  • SDS-PAGE
    >110 kDa, reducing conditions
BT914
 
Formulation Lyophilized from a 0.2 μm filtered solution in PBS and NaCl.
Reconstitution Reconstitute at 100 μg/mL in PBS.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Data Images
Both Biotinylated rhANGPTL7 (Catalog # BT914) and unlabeled Recombinant Human Angiopoietin-likeProtein 7/ANGPTL7 (Catalog # 914-AN) stimulate the expansion of E16-E18 rat liver mononuclear cells in vitro, in the presence of Recombinant Mouse SCF/c‑kit Ligand (Catalog # 455-MC), Recombinant Mouse Thrombopoietin/Tpo (Catalog # 488-TO), and Recombinant Mouse Flt‑3 Ligand (Catalog # 427-FL). The ED50 for this effect is 50-200 ng/mL in the presence of a cross-linking antibody, His Tag MAb (Catalog # MAB050). The similarity in activity highlights that the biotinylated protein is fully functional.
Background: Angiopoietin-like Protein 7/ANGPTL7
Angiopoietin-like 7 (ANGPTL7), also known as Corneal-Derived Transcript 6 (CDT6), is a secreted glycoprotein that is structurally related to the angiopoietins. Members of this protein family contain an N-terminal coiled coil domain and a C-terminal fibrinogen-like domain (1-3). ANGPTL7 shares 89% aa sequence identity with mouse and rat ANGPTL7. It is secreted as a 45-50 kDa monomer that forms disulfide-linked homotrimers and tetramers via the coiled coil domain (4, 5). ANGPTL7 is expressed in the corneal stroma, trabecular meshwork, and sclera and is elevated in glaucoma aqueous humor (3, 5). Its production is up-regulated in trabecular meshwork cells by glucocorticoids and TGF-beta and in cartilage by TNF-alpha (5-7). Over-expression of ANGPTL7 in trabecular meshwork cells inhibits the production of collagen and proteoglycans (8). When over-expressed in tumor cells it promotes collagen and proteoglycan deposition but inhibits tumor xenograft progression and tumor angiogenesis (4). ANGPTL7, when used in combination with SCF, Thrombopoietin, IGF-II, and FGF acidic, enhances the expansion and engraftment of human and mouse hematopoietic stem cells (9).
  • References:
    1. Oike, Y. et al. (2009) Circ. J. 73:2192.
    2. Miida, T. and S. Hirayama (2010) Curr. Opin. Lipidol. 21:70.
    3. Peek, R. et al. (1998) Invest. Opthalmol. Visual Sci. 39:1782.
    4. Peek, R. et al. (2002) J. Biol. Chem. 277:686.
    5. Kuchtey, J. et al. (2008) Invest. Opthalmol. Visual Sci. 49:3438.
    6. Nehme, A. et al. (2009) BMC Med. Genomics 2:58.
    7. Stevens, A.L. et al. (2008) Arthritis Rheum. 58:489.
    8. Comes, N. et al. (2010) Genes Cells 16:243.
    9. Zhang, C.C. et al. (2006) Nat. Med. 12:240.
  • Entrez Gene IDs:
    10218 (Human); 654812 (Mouse)
  • Alternate Names:
    angiopoietin-like 7; Angiopoietin-like factor; Angiopoietin-like Protein 7; angiopoietin-related protein 7; ANGPTL7; AngX; CDT6; CDT6angiopoietin-like factor (CDT6); Cornea-derived transcript 6 protein; dJ647M16.1; RP4-647M16.2
Related Research Areas
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