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R Recombinant
Recombinant: Superior lot-to-lot consistency, continuous supply, and animal-free manufacturing.

PQBP1 (E5N7J) Rabbit mAb #17134

Filter:
  • WB
  • IP
  • IF
Western Blotting Image 1: PQBP1 (E5N7J) Rabbit mAb
Western blot analysis of extracts from various human, mouse, and rat cell lines using PQBP1 (E5N7J) Rabbit mAb (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower).

To Purchase # 17134

Cat. # Size Qty. Price
17134T 20 µl
$168
17134S 100 µl
$371

Supporting Data

REACTIVITY H M R
SENSITIVITY Endogenous
MW (kDa) 33
Source/Isotype Rabbit IgG
Application Key:
  • WB-Western Blotting 
  • IP-Immunoprecipitation 
  • IF-Immunofluorescence 
Species Cross-Reactivity Key:
  • H-Human 
  • M-Mouse 
  • R-Rat 
  • Related Products

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunoprecipitation 1:50
Immunofluorescence (Immunocytochemistry) 1:100 - 1:400

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/mL BSA, 50% glycerol, and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Protocol

Specificity / Sensitivity

PQBP1 (E5N7J) Rabbit mAb recognizes endogenous levels of total PQBP1 protein. This antibody cross-reacts with a 50 kDa protein of unknown identity in mouse models by western blot. Mouse species reactivity is western blot only.

Species Reactivity:

Human, Mouse, Rat

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human PQBP1 protein.

Background

Polyglutamine binding protein 1 (PQBP1) is an intrinsically disordered protein that is broadly expressed and evolutionarily conserved (1-3). PQBP1 has primarily been detected in the nucleus, though it has also been observed in the cytoplasm of mouse microglia (4,5). In the nucleus, PQBP1 is known to interact with mRNA splicing and RNA binding proteins, as well as the polyglutamine protein ataxin-1, and plays roles in both transcription and translation (4, 6-8). Mutations leading to loss of function of PQBP1 are associated with Golabi-Ito-Hall syndrome and Renpenning's syndrome, hallmarks of which include microcephaly and intellectual disability (9-11). Recently, PQBP1 has been reported to interact with tau protein, mediating activation of the cGAS-STING pathway in microglia (5). In the context of HIV-1 infection, PQBP1 also activates the cGAS-STING pathway by binding to reverse-transcribed HIV-1 DNA and cGAS, resulting in an innate immune response driven by IRF-3 (12).
For Research Use Only. Not For Use In Diagnostic Procedures.
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