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For research use only.

Verified Samples Verified Samples in WB: OVCAR3, HeLa, Jurkat, HepG2, Mouse brain, Mouse spleen
Verified Samples in IHC: Rat brain, Human lung cancer, Mouse lung
Verified Samples in IF: HeLa
Dilution WB 1:500-1:1000,  IHC 1:50-1:100,  IF 1:50-1:100
Isotype IgG
Host Rabbit
Reactivity Human,  Mouse,  Rat
Applications WB,  IHC,  IF
Clonality Polyclonal
Immunogen Recombinant fusion protein of human SFPQ (NP_005057.1).
Abbre SFPQ
Synonyms POMP100,  PPP1R140,  PSF,  SFPQ
Swissprot
Calculated MW 72 kDa/76 kDa
Observed MW 115 kDa
The actual band is not consistent with the expectation.

Western blotting is a method for detecting a certain protein in a complex sample based on the specific binding of antigen and antibody. Different proteins can be divided into bands based on different mobility rates. The mobility is affected by many factors, which may cause the observed band size to be inconsistent with the expected size. The common factors include:

1. Post-translational modifications: For example, modifications such as glycosylation, phosphorylation, methylation, and acetylation will increase the molecular weight of the protein.

2. Splicing variants: Different expression patterns of various mRNA splicing bodies may produce proteins of different sizes.

3. Post-translational cleavage: Many proteins are first synthesized into precursor proteins and then cleaved to form active forms, such as COL1A1.

4. Relative charge: the composition of amino acids (the proportion of charged amino acids and uncharged amino acids).

5. Formation of multimers: For example, in protein dimer, strong interactions between proteins can cause the bands to be larger. However, the use of reducing conditions can usually avoid the formation of multimers.

If a protein in a sample has different modified forms at the same time, multiple bands may be detected on the membrane.

Cellular Localization Nucleus matrix. Predominantly in nuclear matrix.
Concentration 1 mg/mL
Buffer Phosphate buffered solution, pH 7.4, containing 0.05% stabilizer and 50% glycerol.
Purification Method Affinity purification
Research Areas Cancer,  Epigenetics and Nuclear Signaling
Conjugation Unconjugated
Storage Store at -20°C Valid for 12 months. Avoid freeze / thaw cycles.
Shipping The product is shipped with ice pack,upon receipt,store it immediately at the temperature recommended.
background DNA- 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 a heteromer with NONO. Binds to pre-mRNA in spliceosome C complex, and specifically binds to intronic polypyrimidine tracts. Involved in regulation of signal-induced alternative splicing. During splicing of PTPRC/CD45, a phosphorylated form is sequestered by THRAP3 from the pre-mRNA in resting T-cells; T-cell activation and subsequent reduced phosphorylation is proposed to lead to release from THRAP3 allowing binding to pre-mRNA splicing regulatotry elements which represses exon inclusion. 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.
Other Clones

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Unconjugated

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