CoraLite® Plus 488-conjugated SFPQ Monoclonal antibody

SFPQ Monoclonal Antibody for FC (Intra)

Host / Isotype

Mouse / IgG1

Reactivity

Human, mouse, rat

Applications

FC (Intra)

Conjugate

CoraLite® Plus 488 Fluorescent Dye

CloneNo.

1G4A5

Cat no : CL488-67129

Synonyms

POMP100, POMP 100, Polypyrimidine tract-binding protein-associated-splicing factor, DNA-binding p52/p100 complex, 100 kDa subunit, 1G4A5

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Validation Data Gallery

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  FC experiment of HeLa using CL488-67129

  1X10^6 HeLa cells were intracellularly stained with 0.4 ug CoraLite® Plus 488 Anti-Human SFPQ (CL488-67129, Clone:1G4A5) (red), or 0.4 ug CoraLite® Plus 488 Mouse IgG1 Isotype Control (MOPC-21) (CL488-65124, Clone: MOPC-21) (blue). Cells were fixed and permeabilized with Transcription Factor Staining Buffer Kit (PF00011).

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Tested Applications

• Positive FC (Intra) detected in: HeLa cells

Recommended dilution

• Flow Cytometry (FC) (INTRA): FC (INTRA) : 0.40 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

CL488-67129 targets SFPQ in FC (Intra) applications and shows reactivity with Human, mouse, rat samples.

• Tested Reactivity: Human, mouse, rat
• Host / Isotype: Mouse / IgG1
• Class: Monoclonal
• Type: Antibody
• Immunogen: SFPQ fusion protein Ag7181
• Full Name: splicing factor proline/glutamine-rich (polypyrimidine tract binding protein associated)
• Calculated Molecular Weight: 76 kDa
• Observed Molecular Weight: 90-100 kDa
• GenBank Accession Number: BC051192
• Gene Symbol: SFPQ
• Gene ID (NCBI): 6421
• Conjugate: CoraLite® Plus 488 Fluorescent Dye
• Excitation/Emission Maxima Wavelengths: 493 nm / 522 nm
• Form: Liquid
• Purification Method: Protein G purification
• Storage Buffer: PBS with 50% Glycerol, 0.05% Proclin300, 0.5% BSA, pH 7.3.
• Storage Conditions: Store at -20°C. Avoid exposure to light. Stable for one year after shipment. Aliquoting is unnecessary for -20^oC storage.

Background Information

SFPQ, also named PSF, encodes a nuclear factor implicated in the splicing and regulation of gene expression. SFPQ probably forms a heteromer with NONO and participates in DNA pairing and DNA break repair program. Very recently SFPQ was identified as a downstream target of tau, complete nuclear depletion and cytoplasmic accumulation of SFPQ were shown in the neurons and astrocytes of brains with Alzheimer's disease (AD), more strikingly, reduced SFPQ levels may progress together with tau pathology, these observation strongly suggests the important role of SFPQ pathology in neurodegenerative diseases including AD. SFPQ encompasses 707 amino acids and has a molecular weight of 76 kDa, although it typically migrates on a sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) gel at an apparent molecular weight of ∼100 kDa. Proteolytic cleavage products of apparent molecular weights of 47 and 68 kDa, and an alternatively spliced form of 669 amino acids, have also been described in various cell types. (PMID: 25832716). Splicing Factor Proline and Glutamine rich (SFPQ) as the most significant intron-retaining transcript across diverse ALS-causing mutations (VCP, SOD1 and FUS). SFPQ protein binds extensively to its retained intron, which exhibits high cytoplasmic abundance in VCP mutation compared with controls. Crucially, the protein is less abundant in the nuclei of VCP mutation cultures and is ultimately lost from nuclei of MNs in mouse models (SOD1mu and VCP mutation transgenic mouse models) and human sporadic ALS post-mortem samples. In summary, our study implicates SFPQ IR and nuclear loss as general molecular hallmarks of familial and sporadic ALS.