Recombinant Mouse Angiopoietin-like 4 Protein, CF

R&D Systems, part of Bio-Techne | Catalog # 4880-AN

R&D Systems, part of Bio-Techne
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4880-AN-050
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Key Product Details

Source

CHO

Accession #

Q9Z1P8

Structure / Form

Oligomer

Conjugate

Unconjugated

Applications

Inhibition Activity

View all Angiopoietin-like Protein 4/ANGPTL4 Proteins and Enzymes »

Product Specifications

Source

Chinese Hamster Ovary cell line, CHO-derived mouse Angiopoietin-like Protein 4/ANGPTL4 protein
Gln24-Ser410, with a C-terminal 6-His tag

Purity

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

No results obtained: Gln24 predicted

Predicted Molecular Mass

44.2 kDa

SDS-PAGE

55-65 kDa, reducing conditions

Activity

Measured by its ability to inhibit lipoprotein lipase activity. Yoshida, K. et al. (2002) J. Lipid Res. 43:1770.
The IC50 value under conditions in which Recombinant Human Lipoprotein Lipase/LPL (Catalog # 9888-LL)  and p-nitrophenyl butyrate are present in 0.1 M sodium phosphate, 0.15 M NaCl, 0.5% Triton® X-100, pH 7.2, is approximately 0.1‑1 µg/mL.

Formulation, Preparation and Storage

4880-AN
Formulation Lyophilized from a 0.2 μm filtered solution in PBS and NaCl.
Reconstitution
Reconstitute at 200 μg/mL in sterile PBS.

Reconstitution Buffer Available:
Size / Price
Qty
Shipping The product is shipped at ambient temperature. 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.

Background: Angiopoietin-like Protein 4/ANGPTL4

Angiopoietin-like 4 (ANGPTL4), also known as FIAF, FARP, and PGAR, is a 55 kDa glycoprotein secreted by the liver and fat tissue. It is structurally related to the angoipoietins and contains an N-terminal coiled coil domain and a C-terminal fibrinogen-like domain which can be proteolytically separated in vivo (1). Mature mouse ANGPTL4 shares 26%-30% amino acid (aa) sequence identity with mouse ANGPTL1, 2, 3, 4, 6, and 7. It shares 75% and 97% aa sequence identity with human and rat ANGPTL4, respectively. The coiled coil domain, which is not glycosylated, mediates the formation of variable sized disulfide-linked oligomers (2). This domain directly inhibits lipoprotein lipase, resulting in increased circulating triglyceride levels (3, 4). In humans, the N-terminal fragment and full length ANGPTL4 physically associate with HDL (4). In mouse, however, full length ANGPTL4 associates with HDL, while the N-terminal fragment associates with LDL (4). Circulating ANGPTL4 is decreased in type II diabetics with a subsequent loss of its normal plasma glucose lowering activity (5). Its expression in adipose tissue is induced by fasting and suppressed by feeding (6). In hypoxic areas, ANGPTL4 is induced in both vascular endothelial cells and tumor cells (7, 8). The N-terminal fragment can function as an angiogenesis inhibitor (7, 8). In contrast, the C-terminal fragment modulates cell adhesion through interactions with heparan sulfate proteoglycans, Integrins  beta1 and beta5, Vitronectin, and Fibronectin, thereby promoting keratinocyte migration and wound healing (7, 9, 10). ANGPTL4 additionally enhances the survival of hematopoietic and mesenchymal stem cells (11, 12). The expression of an undersialylated form of ANGPTL4 in renal podocytes contributes to proteinuria and nephrotic syndrome (13).

References

  1. Zhu, P. et al. (2012) Biosci. Rep. 32:211.
  2. Ge, H. et al. (2004) J. Biol. Chem. 279:2038.
  3. Sukonina, V. et al. (2006) Proc. Natl. Acad. Sci. USA 103:17450.
  4. Mandard, S. et al. (2006) J. Biol. Chem. 281:934.
  5. Xu, A. et al. (2005) Proc. Natl. Acad. Sci. USA 102:6086.
  6. Kersten, S. et al. (2000) J. Biol. Chem. 275:28488.
  7. Cazes, A. et al. (2006) Circ. Res. 99:1207.
  8. Le Jan, S. et al. (2003) Am. J. Pathol. 162:1521.
  9. Goh, Y.Y. et al. (2010) Am. J. Pathol. 177:2791.
  10. Goh, Y.Y. et al. (2010) J. Biol. Chem. 285:32999.
  11. Blank, U. et al. (2012) Eur. J. Haematol. 89:198.
  12. Hou, M. et al. (2014) PLoS ONE 9:e85808.
  13. Clement, L.C. et al. (2011) Nat. Med. 17:117.

Alternate Names

Angiopoietin like Protein 4, ANGPTL4, FIAF, HFARP, PGAR

Entrez Gene IDs

51129 (Human); 57875 (Mouse); 362850 (Rat)

Gene Symbol

ANGPTL4

UniProt

Q9Z1P8

Additional Angiopoietin-like Protein 4/ANGPTL4 Products

Product Documents for Recombinant Mouse Angiopoietin-like 4 Protein, CF

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Product Specific Notices for Recombinant Mouse Angiopoietin-like 4 Protein, CF

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