Product nameAnti-SFPQ antibody
See all SFPQ primary antibodies
DescriptionRabbit polyclonal to SFPQ
Tested applicationsSuitable for: IP, IHC-P, WBmore details
Species reactivityReacts with: Mouse, Human
Synthetic peptide within Human SFPQ aa 225-275. The exact sequence is proprietary.
Database link: P23246
- IHC-P: Human colon carcinoma tissue; WB: HeLa and NIH/3T3 whole cell lysates; IP: HeLa whole cell lysate.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C. Avoid freeze / thaw cycle.
Storage bufferPreservative: 0.09% Sodium azide
Constituents: Tris buffered saline, 0.1% BSA
Concentration information loading...
PurityImmunogen affinity purified
Our Abpromise guarantee covers the use of ab264197 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|IP||Use at 2-5 µg/mg of lysate.|
|IHC-P||1/100 - 1/500. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.|
|WB||1/2000 - 1/10000.|
FunctionDNA- and RNA binding protein, involved in several nuclear processes. Essential pre-mRNA splicing factor required early in spliceosome formation and for splicing catalytic step II, probably as an heteromer with NONO. Binds to pre-mRNA in spliceosome C complex, and specifically binds to intronic polypyrimidine tracts. Interacts with U5 snRNA, probably by binding to a purine-rich sequence located on the 3' side of U5 snRNA stem 1b. May be involved in a pre-mRNA coupled splicing and polyadenylation process as component of a snRNP-free complex with SNRPA/U1A. The SFPQ-NONO heteromer associated with MATR3 may play a role in nuclear retention of defective RNAs. SFPQ may be involved in homologous DNA pairing; in vitro, promotes the invasion of ssDNA between a duplex DNA and produces a D-loop formation. The SFPQ-NONO heteromer may be involved in DNA unwinding by modulating the function of topoisomerase I/TOP1; in vitro, stimulates dissociation of TOP1 from DNA after cleavage and enhances its jumping between separate DNA helices. The SFPQ-NONO heteromer may be involved in DNA nonhomologous end joining (NHEJ) required for double-strand break repair and V(D)J recombination and may stabilize paired DNA ends; in vitro, the complex strongly stimulates DNA end joining, binds directly to the DNA substrates and cooperates with the Ku70/G22P1-Ku80/XRCC5 (Ku) dimer to establish a functional preligation complex. SFPQ is involved in transcriptional regulation. Transcriptional repression is probably mediated by an interaction of SFPQ with SIN3A and subsequent recruitment of histone deacetylases (HDACs). The SFPQ-NONO/SF-1 complex binds to the CYP17 promoter and regulates basal and cAMP-dependent transcriptional avtivity. SFPQ isoform Long binds to the DNA binding domains (DBD) of nuclear hormone receptors, like RXRA and probably THRA, and acts as transcriptional corepressor in absence of hormone ligands. Binds the DNA sequence 5'-CTGAGTC-3' in the insulin-like growth factor response element (IGFRE) and inhibits IGF-I-stimulated transcriptional activity.
Involvement in diseaseNote=A chromosomal aberration involving SFPQ may be a cause of papillary renal cell carcinoma (PRCC). Translocation t(X;1)(p11.2;p34) with TFE3.
Sequence similaritiesContains 2 RRM (RNA recognition motif) domains.
modificationsThe N-terminus is blocked.
Phosphorylated on multiple serine and threonine residues during apoptosis. In vitro phosphorylated by PKC. Phosphorylation stimulates binding to DNA and D-loop formation, but inhibits binding to RNA.
Arg-7, Arg-9, Arg-19 and Arg-25 are dimethylated, probably to asymmetric dimethylarginine.
Cellular localizationNucleus matrix. Predominantly in nuclear matrix.
- Information by UniProt
- 100 kDa DNA pairing protein antibody
- 100 kDa DNA-pairing protein antibody
- 100 kDa subunit antibody
All lanes : Anti-SFPQ antibody (ab264197) at 0.04 µg/ml
Lane 1 : HeLa whole cell lysate at 50 µg
Lane 2 : HeLa whole cell lysate at 15 µg
Lane 3 : HeLa whole cell lysate at 5 µg
Lane 4 : NIH/3T3 whole cell lysate at 50 µg
Detected with chemilimuniscence with exposure time of 3 seconds.
Secondary: Goat anti-Rabbit Light Chain HRP Conjugate.
Immunohistochemical analysis of formalin/PFA-fixed, paraffin-embedded human colon carcinoma tissue labeling SFPQ with ab264197 at 1/200 dilution. Detection: DAB.
SFPQ was immunoprecipitated from 1mg of HeLa (Human epithelial cell line from cervix adenocarcinoma) whole cell lysate with ab264197 at 3 µg/mg lysate. Western blot was performed from the immunoprecipitate using ab264197 at 1 µg/ml.
Lane 1: ab264197 IP in HeLa whole cell lysate.
Lane 2: Control IgG.
Exposure time: 1 sec.
To our knowledge, customised protocols are not required for this product. Please try the standard protocols listed below and let us know how you get on.
ab264197 has not yet been referenced specifically in any publications.