• Species Reactivity

  Mouse

• Specificity

  Detects mouse DLL4 in direct ELISAs and Western blots. In direct ELISAs, approximately 50% cross‑reactivity with recombinant human DLL4 is observed.

• Source

  Polyclonal Goat IgG

• Purification

  Antigen Affinity-purified

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant mouse DLL4    
  Ser28-Pro525    
  Accession # BAB18580

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  2 µg/mL

  See below

• 
  

• Immunocytochemistry

  5-15 µg/mL

  See below

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Data Examples

Preparation and Storage

• Reconstitution

  Reconstitute at 0.2 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• 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.

• 6 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 -Ssecretase, 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

• Entrez Gene IDs:

  54567 (Human); 54485 (Mouse)

• Alternate Names:

  Delta 4 precursor; delta 4; delta ligand 4; delta4; delta-like 4 (Drosophila); delta-like 4 homolog (Drosophila); delta-like 4 homolog; delta-like 4 protein; delta-like protein 4; DLL4; Drosophila Delta homolog 4; hdelta2; MGC126344; notch ligand delta-2; notch ligand DLL4