Recombinant Human DLL1/Delta-1 Protein (His Tag)(Active) | PKSH031052

Recombinant Human DLL1/Delta-1 Protein (His Tag)(Active) | PKSH031052 | Gentaur US, UK & Europe Disrtribition

Synonyms: Delta-like protein 1; Drosophila Delta homolog 1; Delta1; H-Delta-1; DLL1;DELTA1;DL1

Active Protein: Active protein

Activity: A DNA sequence encoding the human DLL1 (NP_005609.3) extracellular domain (Met 1-Gly 540) was fused with a polyhistidine tag at the C-terminus.

Protein Construction: A DNA sequence encoding the human DLL1 (NP_005609.3) extracellular domain (Met 1-Gly 540) was fused with a polyhistidine tag at the C-terminus.

Fusion Tag: C-His

Species: Human

Expressed Host: HEK293 Cells

Shipping: This product is provided as lyophilized powder which is shipped with ice packs.

Purity: > 95 % as determined by reducing SDS-PAGE.

Endotoxin: < 1.0 EU per µg as determined by the LAL method.

Stability and Storage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.

Molecular Mass: 57.4 kDa

Formulation: Lyophilized from sterile PBS, pH 7.4

Reconstitution: Please refer to the printed manual for detailed information.

Background: Delta-like protein 1(DLL1), also known as Delta1, a single-pass type I membrane protein which contains one DSL domain and eight EGF-like domains,   acts as a ligand for Notch receptors, and positively regulates T-cell development. DLL1 is proteolytically processed in a similar manner to the Notch receptor, and it has been speculated to participate in bidirectional signaling. The proteolytic processing of DLL1 helps achieve an asymmetry in Notch signaling in initially equivalent myogenic cells and helps sustain the balance between differentiation and self-renewal. Interactions between DLL1 and Notch in trans activate the Notch pathway, whereas DLL1 binding to Notch in cis inhibits Notch signaling. DLL1 undergoes proteolytic processing in its extracellular domain by ADAM10. It had been demonstrated that DLL1 represents a substrate for several other members of the ADAM family. In co-transfected cells, DLL1 is constitutively cleaved by ADAM12, and the N-terminal fragment of DLL1 is released to medium. ADAM12-mediated cleavage of DLL1 is cell density-dependent, takes place in cis orientation, and does not require the presence of the cytoplasmic domain of ADAM12. Full-length DLL1, but not its N- or C-terminal proteolytic fragment, co-immunoprecipitates with ADAM12. By using a Notch reporter construct, we show that DLL1 processing by ADAM12 increases Notch signaling in a cell-autonomous manner. Furthermore, ADAM9 and ADAM17 have the ability to process DLL1. In contrast, ADAM15 does not cleave DLL1, although the two proteins still co-immunoprecipitate with each other. During fetal development, DLL1 is an essential Notch ligand in the vascular endothelium of large arteries to activate Notch1 and maintain arterial identity. DLL1-Notch signaling was required for VEGF receptor expression in fetal arteries.

Research Area: Neuroscience, Developmental Biology, epigenetics and nuclear signal, Stem cells