Delta-like protein 4/DLL4 Protein, Human (HEK293, His)

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Based on 1 Customer Validation

Delta-like protein 4 (DLL4) functions as a Notch ligand and activates NOTCH1 and NOTCH4 in the Notch signaling pathway. It regulates angiogenesis by inhibiting endothelial cell proliferation, migration, and angiogenesis. Delta-like protein 4/DLL4 Protein, Human (HEK293, His) is the recombinant human-derived Delta-like protein 4/DLL4 protein, expressed by HEK293 , with C-His labeled tag.

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  • Species: Human
  • Source: HEK293
  • Almacenamiento:
    Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
  • Actividad biológica
  • Technical Parameters
  • Product Properties
  • Documentación
  • Help & FAQs

Actividad biológica

Descripciòn

Delta-like protein 4 (DLL4) functions as a Notch ligand and activates NOTCH1 and NOTCH4 in the Notch signaling pathway. It regulates angiogenesis by inhibiting endothelial cell proliferation, migration, and angiogenesis. Delta-like protein 4/DLL4 Protein, Human (HEK293, His) is the recombinant human-derived Delta-like protein 4/DLL4 protein, expressed by HEK293 , with C-His labeled tag.

Background

Delta-like protein 4 (DLL4) is a key participant in the Notch signaling pathway, acting as a Notch ligand with functional implications. It specifically activates NOTCH1 and NOTCH4, contributing to the intricate cellular communication within this signaling cascade. Beyond its role in Notch signaling, DLL4 emerges as a crucial regulator of angiogenesis, exerting a negative influence on endothelial cell proliferation, migration, and angiogenic sprouting. The protein's indispensability extends to retinal progenitor proliferation, where it plays a vital role in suppressing rod fates in late retinal progenitors and ensuring the proper generation of diverse retinal cell types. Additionally, during spinal cord neurogenesis, DLL4 inhibits V2a interneuron fate, adding another layer to its multifaceted functions. The molecular interactions involving DLL4 include its engagement with NOTCH4 and NOTCH1, facilitated by specific domains in DLL4 and NOTCH1, respectively.

Verified Bioactivity

1. Measured by the ability of the immobilized protein to enhance BMP-2 induced alkaline phosphatase activity in C3H10T1/2 mouse embryonic fibroblast cells. The ED50 for this effect is 0.1385 μg/mL in the presence of 100 ng/mL BMP-2, corresponding to a specific activity is 7.220×103 units/mg.
2. Measured by the ability of the immobilized protein to enhance BMP-2 induced alkaline phosphatase activity in C3H10T1/2 mouse embryonic fibroblast cells. The ED50 for this effect is 0.1-0.3 μg/mL in presence of 200 ng/mL BMP-2, corresponding to a specific activity is 5.126×103 units/mg.

Results
  • Experimental Validation Results for Delta-like protein 4/DLL4 Protein, Human (HEK293, His)
    Measured by the ability of the immobilized protein to enhance BMP-2 induced alkaline phosphatase activity in C3H10T1/2 mouse embryonic fibroblast cells. The ED50 for this effect is approximately 0.1385 μg/mL in the presence of 100 ng/mLMouse BMP-2, corresponding to a specific activity is 7.220×103 units/mg.

Technical Parameters

  • Species Human
  • Source HEK293
  • Tag C-His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • DLL4 (S27-P524)
      Accession # Q9NR61/NP_061947.1
    • His
    • C-term
  • Protein Length

    Partial

  • Synonyms

    rHuDelta-like protein 4/DLL4, His; Delta-like protein 4; Drosophila Delta homolog 4; Delta4; DLL4

  • AA Sequence

    SGVFQLQLQEFINERGVLASGRPCEPGCRTFFRVCLKHFQAVVSPGPCTFGTVSTPVLGTNSFAVRDDSSGGGRNPLQLPFNFTWPGTFSLIIEAWHAPGDDLRPEALPPDALISKIAIQGSLAVGQNWLLDEQTSTLTRLRYSYRVICSDNYYGDNCSRLCKKRNDHFGHYVCQPDGNLSCLPGWTGEYCQQPICLSGCHEQNGYCSKPAECLCRPGWQGRLCNECIPHNGCRHGTCSTPWQCTCDEGWGGLFCDQDLNYCTHHSPCKNGATCSNSGQRSYTCTCRPGYTGVDCELELSECDSNPCRNGGSCKDQEDGYHCLCPPGYYGLHCEHSTLSCADSPCFNGGSCRERNQGANYACECPPNFTGSNCEKKVDRCTSNPCANGGQCLNRGPSRMCRCRPGFTGTYCELHVSDCARNPCAHGGTCHDLENGLMCTCPAGFSGRRCEVRTSIDACASSPCFNRATCYTDLSTDTFVCNCPYGFVGSRCEFPVGLP

  • Peso molecular

    Approximately 55-70 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

  • Glycosylation

    Yes

  • Pureza

    ≥ 95%, as determined by reducing SDS-PAGE.

    • Experimental Validation Results for Delta-like protein 4/DLL4 Protein, Human (HEK293, His)
      ≥ 95%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Lyophilized powder

Formulation

1.Lyophilized from a 0.22 μm filtered solution of 20 mM Tirs-HCl,150 mM NaCl, pH 8.0.
2.Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.
Please refer to the lot-specific COA for specific buffer information.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Envío

Room temperature in continental US; may vary elsewhere.

Calculators

Reconstitution Calculator

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial)
=
Mass (in vial)
÷
Desired Reconstitution Concentration
Calculadora de dilución

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

Concentration (start)
×
Volume (start)
=
Concentration (final)
×
Volume (final)
The Specific Activity Calculator Equation
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50)
106 ÷
ng/mL