RNA binding protein fox-1 homolog 3 (UniProt: Q8BIF2; also known as Fox-1 homolog C, Hexaribonucleotide-binding protein 3, Fox-3, Neuronal nuclei antigen, NeuN antigen) is encoded by the Rbfox3 (also known as D11Bwg0517e, Hrnbp3) gene (Gene ID: 52897) in murine species. Fox-3 acts as a pre-mRNA alternative splicing regulator. It regulates alternative splicing of RBFOX2 to enhance the production of mRNA species that are targeted for nonsense-mediated decay (NMD). It is widely expressed in brain, including in cerebral cortex, hippocampus, thalamus, caudate/putamen, cerebellum, and in the spinal cord (at protein level). However, Purkinje cells lack Fox-3 expression. It is also found in the retina in the ganglion cells and some cells in the inner nuclear layer, but is absent from the photoreceptor cells and most cells in the inner nuclear layer. In developing mouse it is expressed in the neural tube as early as day E9.5. Fox-3 expression is shown to be up-regulated by retinoic acid in p19 cells during neural differentiation. Knockout mice display significantly reduced brain weight, impaired neurofilament expression and decreased white matter volume, but normal total body mass. Five isoforms of Fox-3 have been described that are generated by alternative splicing.

This antibody recognizes Fox-3 at the N-terminus.

Epitope: N-terminus

GST-tagged recombinant protein corresponding to the N-terminus of mouse Fox-3.

Anti-Fox-3, Cat. No. ABN51, is a highly specific rabbit polyclonal antibody that targets Fox 3/NeuN and has been tested in Immunocytochemistry, Immunohistochemistry (Paraffin), and Western Blotting.

Research Category
Neuroscience

Research Sub Category
Developmental Neuroscience

Western Blotting Analysis: 2 µg/mL from a representative lot detected Fox-3 in mouse brain nuclear extract.

Immunohistochemistry Analysis: A 1:1,000 dilution from a representative lot detected Fox-3 in mouse cerebral cortex, mouse hippocampus, and human cerebellum tissues.

Immunocytochemistry Analysis: A 1:100 dilution from a representative lot detected Fox-3 in E18 rat cortex cells.

Evaluated by Western Blot in mouse e16 brain tissue lysate.

Western Blot Analysis: 0.5 µg/mL of this antibody detected Fox-3 on 10 µg of mouse e16 brain tissue lysate.

~46 kDa observed. An uncharacterized band appears at ~68 kDa in some lysates.

Affinity purified

Purified rabbit polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Stable for 1 year at 2-8°C from date of receipt.

Control
Mouse e16 brain tissue lysate

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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