Recombinant Human Angiopoietin-4 Protein

Formulations:
Catalog # Availability Size / Price Qty
964-AN-025
Product Details
Citations (4)
FAQs
Reviews

Recombinant Human Angiopoietin-4 Protein Summary

Purity
>85%, 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.
Activity
Measured by its ability to compete with biotinylated rhAng-2 for binding to immobilized Tie-2/Fc Chimera in a functional ELISA. Compared to rmAngiopoietin-3, rhAngiopoietin-4 is less effective in this competitive assay.
Source
Mouse myeloma cell line, NS0-derived human Angiopoietin-4 protein
Human Ang-4
(Gln23 - Ile503) or (Gln24 - Ile503)
Accession # Q9Y264
IEGR GGGSGGGSGGGS10-His tag
N-terminus C-terminus
Accession #
N-terminal Sequence
Analysis
No results obtained: Gln23 or Gln24 predicted
Structure / Form
Oligomer
Predicted Molecular Mass
57 kDa (monomer)
SDS-PAGE
60-100 kDa, reducing conditions

Product Datasheets

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

964-AN

Formulation Lyophilized from a 0.2 μm filtered solution in Tris-Citrate and NaCl with BSA as a carrier protein.
Reconstitution Reconstitute at 10 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
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.

964-AN/CF

Formulation Lyophilized from a 0.2 μm filtered solution in Tris-Citrate and NaCl.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
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.
Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: Angiopoietin-4

Human Angiopoietin-4 (Ang-4) (1), alternatively named Ang-3 (2), is a secreted glycoprotein belonging to the angiopoietin family. It has the characteristic structural motifs of angiopoietins including the coiled-coiled domain near the amino-terminus and a fibrinogen-like domain at the C-terminus. Human Ang-4 cDNA encodes a 503 amino acid (aa) precursor protein with a 23 aa signal peptide. It shares 45%, 47% and 54% aa sequence identity with human Ang-1, human Ang-2 and mouse Ang-3, respectively. Although the sequence homology is much higher between the human and mouse counterparts for Ang-1 (97%) and Ang-2 (85%), mouse Ang-3 is believed to be an ortholog of human Ang-4 based on chromosomal localization studies (2). Human Ang-4 is highly expressed in lung and in cultured human umbilical vein endothelial cells (HUVECs). In contrast, mouse Ang-3 is expressed multiple mouse tissues. Human Ang-4 is an agonist that can bind and activate Tie-2, a receptor tyrosine kinase with immunoglobulin and epidermal growth factor homology domains expressed primarily on endothelial cells and early hematopoietic cells (2, 3). Mouse Ang-3 has been reported to be a Tie-2 antagonist. It is likely that mouse Ang-3, like Ang-2, may exert agonist or antagonist activities depending on the cell context (1, 3, 4).

References
  1. Valenzuela, D.M. et al. (1999) Proc. Natl. Acad. Sci. USA 96:1904.
  2. Nishimura, M. et al. (1999) FEBS Lett. 448:254.
  3. Jones, N. et al. (2001) Nat. Rev. Mol. Cell Biol. 2:257.
  4. Teichert-Kuliszewska, K. et al. (2001) Cardiovasc. Res. 49:659.
Entrez Gene IDs
51378 (Human)
Alternate Names
AGP4; ANG3; ANG-3; ANG-4; ANG4angiopoietin-3; angiopoietin 4; Angiopoietin-3; Angiopoietin-4; ANGPT4; dJ824F16.2 (angiopoietin 4); MGC138181; MGC138183

Citations for Recombinant Human Angiopoietin-4 Protein

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

4 Citations: Showing 1 - 4
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  1. Angiopoietin-4-dependent venous maturation and fluid drainage in the peripheral retina
    Authors: H Elamaa, M Kihlström, E Kapiainen, M Kaakinen, I Miinalaine, S Ragauskas, M Cerrada-Gi, S Mering, M Nätynki, L Eklund
    Elife, 2018;7(0):.
    Species: Human
    Sample Types: Recombinant Protein
    Applications: ELISA (Capture)
  2. Discovery of High-Affinity PDGF-VEGFR Interactions: Redefining RTK Dynamics
    Authors: SB Mamer, S Chen, JC Weddell, A Palasz, A Wittenkell, M Kumar, PI Imoukhuede
    Sci Rep, 2017;7(1):16439.
    Species: Human
    Sample Types: Recombinant Protein
    Applications: Surface Plasmon Resonance
  3. Angiopoietins promote ovarian cancer progression by establishing a procancer microenvironment.
    Authors: Brunckhorst M, Xu Y, Lu R, Yu Q
    Am J Pathol, 2014;184(8):2285-96.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  4. Angiopoietin-4 promotes glioblastoma progression by enhancing tumor cell viability and angiogenesis.
    Authors: Brunckhorst MK, Wang H, Lu R, Yu Q
    Cancer Res., 2010;70(18):7283-93.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay

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