• Product name

  • Description

    Rabbit polyclonal to SF3B3
  • Host species

  • Tested applications

    Suitable for: WB, IHC-P, ICC/IFmore details
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Mouse, Zebrafish
  • Immunogen

    Synthetic peptide containing a sequence corresponding to a region within amino acids 1154-1217 (PLCGRDHLSF RSYYFPVKNV IDGDLCEQFN SMEPNKQKNV SEELDRTPPE VSKKLEDIRT RYAF) of Human SF3B3 (NP_036558).

  • Positive control

    • HeLa whole cell lysate (ab150035); Saos 2; H1299 cell lysate



Our Abpromise guarantee covers the use of ab96683 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/500 - 1/3000. Predicted molecular weight: 136 kDa.
IHC-P 1/100 - 1/250.
ICC/IF Use a concentration of 5 µg/ml.


  • Function

    Subunit of the splicing factor SF3B required for 'A' complex assembly formed by the stable binding of U2 snRNP to the branchpoint sequence (BPS) in pre-mRNA. Sequence independent binding of SF3A/SF3B complex upstream of the branch site is essential, it may anchor U2 snRNP to the pre-mRNA. May also be involved in the assembly of the 'E' complex. Belongs also to the minor U12-dependent spliceosome, which is involved in the splicing of rare class of nuclear pre-mRNA intron.
  • Sequence similarities

    Belongs to the RSE1 family.
  • Cellular localization

  • Information by UniProt
  • Database links

  • Alternative names

    • KIAA0017 antibody
    • Pre mRNA splicing factor SF3b 130 kDa subunit antibody
    • Pre-mRNA-splicing factor SF3b 130 kDa subunit antibody
    • RSE1 antibody
    • SAP 130 antibody
    • SAP130 antibody
    • SF3b130 antibody
    • SF3B3 antibody
    • SF3B3_HUMAN antibody
    • Spliceosome associated protein 130 antibody
    • Spliceosome-associated protein 130 antibody
    • Splicing factor 3b subunit 3 130kD antibody
    • Splicing factor 3B subunit 3 antibody
    • STAF130 antibody
    see all


  • Anti-SF3B3 antibody (ab96683) at 1/3000 dilution + HeLa whole cell lysate at 30 µg

    Predicted band size: 136 kDa

    5% SDS-PAGE
  • ab96683, at 1/100 dilution, staining SF3B3 in paraffin-embedded Saos-2 by Immunohistochemistry.
  • ICC/IF image of ab96683 stained MCF7 cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab96683, 5µg/ml) overnight at +4°C. The secondary antibody (green) was ab96899 Dylight 488 goat anti-rabbit IgG (H+L) used at a 1/250 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.


This product has been referenced in:

  • Chakraborty P  et al. DHX9 helicase promotes R-loop formation in cells with impaired RNA splicing. Nat Commun 9:4346 (2018). Read more (PubMed: 30341290) »
  • Chen K  et al. Alternative Splicing of EZH2 pre-mRNA by SF3B3 Contributes to the Tumorigenic Potential of Renal Cancer. Clin Cancer Res 23:3428-3441 (2017). Read more (PubMed: 27879367) »
See all 5 Publications for this product

Customer reviews and Q&As

Western blot
Human Cell lysate - whole cell (Human Fibroblast)
Loading amount
10 µg
Human Fibroblast
Gel Running Conditions
Reduced Denaturing (4-12% Bis-Tris Nupage Gel)
Blocking step
BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 25°C

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Submitted Dec 11 2012

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