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SFPQ Monoclonal antibody
SFPQ Monoclonal Antibody for WB, IHC, IF/ICC, FC (Intra), ELISA
Host / Isotype
Mouse / IgG1
Reactivity
human, mouse, rat
Applications
WB, IHC, IF/ICC, FC (Intra), ELISA
Conjugate
Unconjugated
CloneNo.
1G4A5
Cat no : 67129-1-Ig
Synonyms
Validation Data Gallery
Tested Applications
| Positive WB detected in | U-251 cells, HSC-T6 cells, HeLa cells, Jurkat cells, PC-3 cells, HEK-293 cells, NIH/3T3 cells, A431 cells, LNCaP cells, K-562 cells |
| Positive IHC detected in | rat stomach tissue, human colon cancer tissue, human lung cancer tissue, human pancreas cancer tissue, mouse brain tissue, mouse stomach tissue, rat brain tissue Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0 |
| Positive IF/ICC detected in | HeLa cells, MCF-7 cells |
| Positive FC (Intra) detected in | HeLa cells |
Recommended dilution
| Application | Dilution |
|---|---|
| Western Blot (WB) | WB : 1:5000-1:50000 |
| Immunohistochemistry (IHC) | IHC : 1:2000-1:8000 |
| Immunofluorescence (IF)/ICC | IF/ICC : 1:400-1:1600 |
| 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. | |
Published Applications
| WB | See 2 publications below |
Product Information
67129-1-Ig targets SFPQ in WB, IHC, IF/ICC, FC (Intra), ELISA applications and shows reactivity with human, mouse, rat samples.
| Tested Reactivity | human, mouse, rat |
| Cited Reactivity | human, mouse |
| Host / Isotype | Mouse / IgG1 |
| Class | Monoclonal |
| Type | Antibody |
| Immunogen | SFPQ fusion protein Ag7181 相同性解析による交差性が予測される生物種 |
| 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 |
| RRID | AB_2882428 |
| Conjugate | Unconjugated |
| Form | Liquid |
| Purification Method | Protein A purification |
| 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 -20oC 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.
Protocols
| Product Specific Protocols | |
|---|---|
| WB protocol for SFPQ antibody 67129-1-Ig | Download protocol |
| IHC protocol for SFPQ antibody 67129-1-Ig | Download protocol |
| IF protocol for SFPQ antibody 67129-1-Ig | Download protocol |
| Standard Protocols | |
|---|---|
| Click here to view our Standard Protocols |
Publications
| Species | Application | Title |
|---|---|---|
Int J Mol Sci Serum Splicing Factor Proline- and Glutamine-Rich Is a Diagnostic Marker for Non-Small-Cell Lung Cancer and Other Solid Cancers |
Reviews
The reviews below have been submitted by verified Proteintech customers who received an incentive forproviding their feedback.
FH Ruth (Verified Customer) (11-12-2024) | Good staining resulting in nice clear images but titration to lower concentrations resulted in rapid loss of signal.
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