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Recombinant Mouse Angiopoietin-like 3 Protein, CF

Catalog # 136-AN | R&D Systems, Inc. a Bio-Techne Brand
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136-AN-050

Key Product Details

Source

Sf 21 (baculovirus)

Accession #

Structure / Form

Oligomer

Conjugate

Unconjugated

Applications

Inhibition Activity

Product Specifications

Source

Spodoptera frugiperda, Sf 21 (baculovirus)-derived mouse Angiopoietin-like Protein 3/ANGPTL3 protein
Ser17-Thr455, with a C-terminal 10-His tag

Purity

>90%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ser17

Predicted Molecular Mass

51.8 kDa

SDS-PAGE

60 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 2.5‑12.5 µg/mL.

Formulation, Preparation and Storage

136-AN
Formulation Lyophilized from a 0.2 μm filtered solution in PBS, NaCl and CHAPS.
Reconstitution
Reconstitute at 100 μg/mL in sterile PBS.

Reconstitution Buffer Available:
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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 3/ANGPTL3

Angiopoietin-like 3 (ANGPTL3) is a secreted glycoprotein that is structurally related to the angiopoietins (1-3). Mature mouse ANGPTL3 contains an N-terminal coiled-coil domain and a C‑terminal fibrinogen-like domain (4). ANGPTL3 is expressed in the liver from early in development through adulthood (4, 5). Full length ANGPTL3 circulates in the plasma as do the proteolytically separated N- and C‑terminal fragments containing the coiled‑coil domain and fibrinogen-like domains, respectively (6, 7). ANGPTL3 is found as 70 kDa, 50 kDa, and 32 kDa species and can form weakly associated noncovalent multimers in vitro (5, 6). ANGPTL3 directly inhibits lipoprotein lipase (LPL), an enzyme responsible for hydrolyzing circulating triglycerides (8). This activity requires a putative heparin-binding motif that is N-terminal to the coiled-coil domain (6). Proteolytic removal of the fibrinogen-like domain from the N-terminal fragment serves to activate ANGPTL3 and increase its ability to inhibit LPL in vitro and function in vivo (6). ANGPTL3 promotes an increase in circulating triglyceride levels without altering VLDL or HDL secretion or uptake (6-8). ANGPTL3 knockout mice are hypolipidemic and have elevated LPL activity (9). ANGPTL3 expression in vivo is upregulated by LXR agonists and downregulated by insulin, leptin, and TR beta agonists (10-12). Dysregulated ANGPTL3 expression and elevated plasma triglyceride levels are characteristic of some strains of obese and diabetic mice, (7, 8, 11). ANGPTL3 does not bind Tie-1 or Tie-2 but its fibrinogen-like domain interacts with integrin alphaV beta3 to induce endothelial cell adhesion, migration, and neovascularization (13). ANGPTL3, secreted by fetal liver cells, also promotes the expansion of hematopoietic stem cells (14). Mature mouse ANGPTL3 shares 22%-30% amino acid (aa) sequence identity with ANGPTL1, 2, 4, 6, and 7. It shares 77% aa sequence identity with human ANGPTL3.

References

  1. Li, C. (2006) Curr. Opin. Lipidol. 17:152.
  2. Oike, Y. et al. (2004) Int. J. Hematol. 80:21.
  3. Kersten, S. (2005) Biochem. Soc. Transact. 33:1059.
  4. Conklin, D. et al. (1999) Genomics 62:477.
  5. Ge, H. et al. (2005) J. Lipid Res. 46:1484.
  6. Ono, M. et al. (2003) J. Biol. Chem. 278:41804.
  7. Koishi, R. et al. (2002) Nat. Genet. 30:151.
  8. Shimizugawa, T. et al. (2002) J. Biol. Chem. 277:33742.
  9. Koster, A. et al. (2005) Endocrinology 146:4943.
  10. Inaba, T. et al. (2003) J. Biol. Chem. 278:21344.
  11. Shimamura, M. et al. (2004) Biochem. Biophys. Res. Commun. 322:1080.
  12. Fugier, C. et al. (2006) J. Biol. Chem. 281:11553.
  13. Camenisch, G. et al. (2002) J. Biol. Chem. 277:17281.
  14. Zhang, C.C. et al. (2006) Nat. Med. 12:240.

Alternate Names

AGNPT5, Ang-5, Angiopoietin-5, ANGPTL3

Entrez Gene IDs

27329 (Human); 30924 (Mouse); 102136264 (Cynomolgus Monkey)

Gene Symbol

ANGPTL3

UniProt

Product Documents for Recombinant Mouse Angiopoietin-like 3 Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Mouse Angiopoietin-like 3 Protein, CF

For research use only

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