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VPRBP Antibody #13931

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  • WB

Inquiry Info. # 13931

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    Product Specifications

    REACTIVITY H
    SENSITIVITY Endogenous
    MW (kDa) 170
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    VPRBP Antibody recognizes endogenous levels of total VPRBP protein. The antibody may recognize a 50 kDa protein of unknown origin in some cells.

    Species Reactivity:

    Human

    The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.

    Species predicted to react based on 100% sequence homology:

    Mouse, Rat, Pig, Horse

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Phe1184 of human VPRBP protein. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    The HIV-1 viral protein R (Vpr)-binding protein (VPRBP, DCAF1) is a substrate-specific adaptor for the CUL4-based ubiquitin ligase complex that consists of CUL4A, RBX1, and DDB1 (1). VPRBP protein structure contains a central LIS1 homology (LisH) motif responsible for dimerization, and two carboxy-terminal WD-40 motifs involved in Vpr and DDB1 binding (2-4). Research studies demonstrate that VPRBP plays a role in hepatic lipid metabolism by promoting the ubiquitin-dependent proteasomal degradation of the TR4 nuclear receptor, which is involved in lipid homeostasis (5). The VPRBP protein plays a role in mammalian germ cell development through regulation of TET methylcytosine dioxygenase activation (6). Additional studies show that VPRBP exhibits kinase activity and phosphorylates histone H2A at Ser120, which blocks tumor suppressor gene transcription (7). The tumor suppressor Merlin/NF2 inhibits tumorigenesis through interaction with and suppression of the CUL4A-RBX1-DDB1-VPRBP complex (8).

    Alternate Names

    DCAF1; DDB1 and CUL4 associated factor 1; DDB1- and CUL4-associated factor 1; HIV-1 Vpr binding protein; HIV-1 Vpr-binding protein; KIAA0800; MGC102804; Protein VPRBP; RIP; Serine/threonine-protein kinase VPRBP; Vpr (HIV-1) binding protein; Vpr-binding protein; Vpr-interacting protein; VPRBP

    For Research Use Only. Not for Use in Diagnostic Procedures.
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