VPRBP Recombinant antibody

VPRBP Uni-rAb^TM Recombinant Antibody for IF/ICC, FC (Intra), ELISA

Host / Isotype

Rabbit / IgG

Reactivity

human

Applications

IF/ICC, FC (Intra), ELISA

Conjugate

Unconjugated

CloneNo.

241028B4

Cat no : 83901-5-RR

Synonyms

HIV-1 Vpr-binding protein, HIV 1 Vpr binding protein, EC:2.7.11.1, DDB1- and CUL4-associated factor 1, DCAF1

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Validation Data Gallery

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  IF Staining of HeLa using 83901-5-RR

  Immunofluorescent analysis of (4% PFA) fixed HeLa cells using VPRBP antibody (83901-5-RR, Clone: 241028B4 ) at dilution of 1:250 and CoraLite®488-Conjugated Goat Anti-Rabbit IgG(H+L) (SA00013-2), CL594-Phalloidin (red).

• 

  FC experiment of U-2 OS using 83901-5-RR

  1x10^6 U-2 OS were intracellularly stained with 0.25 ug VPRBP Recombinant antibody (83901-5-RR, Clone:241028B4) and APC-Conjugated Goat Anti-Rabbit IgG(H+L)(red), or 0.25 ug Isotype Control (blue). Cells were fixed and permeabilized with True-Nuclear Transcription Factor Buffer Set.

• 

  Affinity and Kinetic Characterization of 83901-5-RR

  Biolayer interferometry (BLl) kinetic assays of 83901-5-RR against Human VPRBP were performed. The affinity constant is 44 pM.

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Tested Applications

• Positive IF/ICC detected in: HeLa cells
• Positive FC (Intra) detected in: U-2 OS

Recommended dilution

• Immunofluorescence (IF)/ICC: IF/ICC : 1:125-1:500
• Flow Cytometry (FC) (INTRA): FC (INTRA) : 0.25 ug per 10^6 cells in a 100 µl suspension

It is recommended that this reagent should be titrated in each testing system to obtain optimal results.

Sample-dependent, Check data in validation data gallery.

Product Information

The immunogen of 83901-5-RR is VPRBP Fusion Protein expressed in E. coli.

• Tested Reactivity: human
• Host / Isotype: Rabbit / IgG
• Class: Recombinant
• Type: Antibody
• Immunogen: VPRBP fusion protein Ag2184
• Full Name: Vpr (HIV-1) binding protein
• Calculated Molecular Weight: 1506 aa, 169 kDa
• Observed Molecular Weight: 169 kDa
• GenBank Accession Number: BC022792
• Gene Symbol: VPRBP
• Gene ID (NCBI): 9730
• Conjugate: Unconjugated
• Form: Liquid
• Purification Method: Protein A purfication
• Storage Buffer: PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
• Storage Conditions: Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20^oC storage. 20ul sizes contain 0.1% BSA.

Background Information

VprBP was first identified as a protein that can interact with HIV-1 viral protein R (PMID: 11223251). It is a component of the CUL4A-RBX1-DDB1-VprBP/DCAF1 E3 ubiquitin-protein ligase complex that could interact with HIV-1 virus Vpr protein and HIV-2 virus Vpx protein (PMID: 18332868; 17314515; 18606781). VprBP is a 1,507 amino acid protein that contains conserved domains, including YXXY repeats, the Lis homology motif, and WD40 repeats. Through binding to Vpr, VprBP allows Vpr to modulate the catalytic activity of the CUL4-DDB1 complex, which in turn leads to the induction of G2 phase arrest in the virus-infected cells (PMID: 17630831). Recently it has been reported that VprBP is able to regulate the p53-induced transcription and apoptotic pathway (PMID: 22184063).