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Recombinant Mouse DLL4 His-tag Protein

Bio-Techne includes R&D Systems | Catalog # 1389-D4

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Carrier Free
1389-D4-050/CF

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With Carrier
1389-D4-050

Key Product Details

Source

NS0

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived mouse DLL4 protein
Ser28-Pro525, 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

Ser28

Predicted Molecular Mass

55.6 kDa

SDS-PAGE

75-80 kDa, reducing conditions

Activity

Measured by the ability of the immobilized protein to enhance BMP-2 induced alkaline phosphatase activity in C3H10T1/2 mouse embryonic fibroblast cells. Nobta, M. et al. (2005) J. Biol. Chem. 280:15842.
The ED50 for this effect is 150-600 ng/mL.

Formulation, Preparation and Storage

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.

Carrier: 1389-D4
Formulation Lyophilized from a 0.2 μm filtered solution in Tris-HCl, NaCl and PEG3350 with BSA as a carrier protein.
Reconstitution Reconstitute at 200 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.
Carrier Free: 1389-D4/CF
Formulation Lyophilized from a 0.2 μm filtered solution in Tris-HCl, NaCl and PEG3350.
Reconstitution Reconstitute at 200 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.

Background: DLL4

Delta-like protein 4 (DLL4) is a type I membrane protein belonging to the Delta/Serrate/Lag2 (DSL) family of Notch ligands (1). Notch signaling is an evolutionarily conserved pathway that controls cell fate and is required in multiple developmental processes including vascular development, hematopoiesis, somatogenesis, myogenesis, and neurogenesis (2 - 4). Dysregulation in the Notch pathway is associated with various human diseases. In mammals, four Notch homologs (Notch 1 to 4) and five ligands (DLL 1, 3 and 4, Jagged 1 and 2) have been identified. Notch ligands are transmembrane proteins with a DSL motif necessary for Notch binding, tandem EGF repeats, a transmembrane region and a short intracellular domain (ICD). Notch ligands are categorized into two subfamilies based on the presence of an extracellular cysteine-rich domain and insertions that interrupt some EGF repeats in the Jagged but not the Delta ligand family. Interactions of Notch receptors with their ligands results in reciprocal regulated intramembrane proteolysis (RIP) (4). RIP is a mechanism for transmembrane signal transduction that involves the sequential processing by a disintegrin metalloprotease (ADAM) and then by presenilin/ gamma secretase, resulting in shedding of the extracellular domains and the generation of the soluble ICD signaling fragments, respectively. The Notch ICD translocates to the nucleus and interacts with transcriptional coactivators, resulting in the transcription of target genes. The ICDs of the Notch ligands have also been shown to translocate to the nucleus where they may have a signaling function (5, 6). DLL4 is expressed highly and selectively within the arterial endothelium and has been shown to function as a ligand for Notch 1 and Notch 4. Human and mouse DLL4 share 86% amino acid sequence identity (1).

References

  1. Shutter, J.R. et al. (2000) Genes Dev. 14:1313.
  2. Iso, Tatsuya et al. (2002) Arterioscler. Thromb. Vasc. Biol. 23:543.
  3. Walker, L. et al. (2001) Stem Cells 19:543.
  4. Baron, M. (2002) Semin. Cell Dev. Biol. 14:113.
  5. Ikeuchi, T. and S.S. Sisodia (2003) J. Biol. Chem. 278:7751.
  6. Bland, C.E. et al. (2003) J. Biol. Chem. 278:13607.

Long Name

Delta-like 4

Alternate Names

delta 4, Delta 4 precursor, delta ligand 4, Delta4, delta-like 4 (Drosophila), delta-like 4 homolog, delta-like 4 homolog (Drosophila), delta-like 4 protein, delta-like protein 4, Drosophila Delta homolog 4, hdelta2, MGC126344, notch ligand delta-2, notch ligand DLL4

Entrez Gene IDs

54567 (Human); 54485 (Mouse); 100152163 (Porcine)

Gene Symbol

DLL4

UniProt

Additional DLL4 Products

Product Documents for Recombinant Mouse DLL4 His-tag Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Mouse DLL4 His-tag Protein

For research use only

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