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Your Position: Accueil > Protein > Elongin B & Elongin C & VHL > ELL-H5595

Human Elongin B&Elongin C&VHL Heterotrimer Protein, Strep II Tag&Strep II Tag&His Tag (MALS&SPR verified)

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  • Synonym
    Elongin B & Elongin C & VHL, ELOB & ELOC & VHL Complex, Elongin B & Elongin C & VHL Complex
  • Source
    Human Elongin B&Elongin C&VHL Heterotrimer Protein, Strep II Tag&Strep II Tag&His Tag(ELL-H5595) is expressed from Baculovirus-Insect cells. It contains AA Asp 2 - Gln 118 (Elongin B) & Asp 2 - Cys 112 (Elongin C) & Pro 2 - 213 Asp (VHL) (Accession # Q15370-1 (Elongin B) & Q15369-1 (Elongin C) & P40337-2 (VHL)).
    Predicted N-terminus: Met (Elongin B) & Met (Elongin C) & Met (VHL)
  • Molecular Characterization

    Human Elongin B&Elongin C&VHL Heterotrimer Protein, Strep II Tag&Strep II Tag&His Tag, produced by co-expression of Elongin B and Elongin C and VHL, has a calculated MW of 14.5 kDa (Elongin B) and 13.8 kDa (Elongin C) and 25.8 kDa (VHL). Subunit Elongin B is fused with a Strep II tag at the N-terminus and Elongin C is fused with a Strep II tag at the N-terminus and VHL is fused with a polyhistidine tag at the N-terminus. The protein migrates as 17 kDa (Elongin B) and 14 kDa (Elongin C) and 30 kDa (VHL) under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Supplied as 0.2 μm filtered solution in 50 mM HEPES, 200 mM NaCl, 20% Glycerol, pH7.5 with trehalose as protectant.

    Contact us for customized product form or formulation.

  • Shipping

    This product is supplied and shipped with dry ice, please inquire the shipping cost.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 12 months under sterile conditions after reconstitution.
SDS-PAGE
Elongin B & Elongin C & VHL SDS-PAGE

Human Elongin B&Elongin C&VHL Heterotrimer Protein, Strep II Tag&Strep II Tag&His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

SEC-MALS
Elongin B & Elongin C & VHL MALS images

The purity of Human Elongin B&Elongin C&VHL Heterotrimer Protein, Strep II Tag&Strep II Tag&His Tag (Cat. No. ELL-H5595) is more than 85% and the molecular weight of this protein is around 51-63 kDa verified by SEC-MALS.

Bioactivity-SPR
 Elongin B & Elongin C & VHL SPR

Human Elongin B&Elongin C&VHL Heterotrimer Protein, Strep II Tag&Strep II Tag&His Tag (Cat. No. ELL-H5595) immobilized on CM5 Chip can bind MZ1 with an affinity constant of 275 μM as determined in a SPR assay (Biacore 8K) (QC tested).

  • Background
    Elongin B (ELOB) and Elongin C (ELOC) form a heterodimer that serves as the regulatory subunit for the Elongin complex--a general transcription elongation factor that increases RNA Polymerase II transcription through template-encoded arresting sites. The ELOB/ELOC complex also binds to the "BC-box motif" found in many proteins in the VHL-box and SOCS-box protein families. In this function, ELOB/ELOC serves as an adapter between substrate recognition proteins and either Cullin-2/Rbx1 (in VHL-box E3 Ubiquitin ligases) or Cullin-5/Rbx2 (in SOCS-box E3 Ubiquitin ligases). VHL is involved in the ubiquitination and subsequent proteasomal degradation via the von Hippel-Lindau ubiquitination complex. It seems to act as a target recruitment subunit in the E3 ubiquitin ligase complex and recruits hydroxylated hypoxia-inducible factor (HIF) under normoxic conditions. Involved in transcriptional repression through interaction with HIF1A, HIF1AN and histone deacetylases.
  • Clinical and Translational Updates

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