Spi-B Antibody (769653)

Western blot shows lysates of Raji human Burkitt's lymphoma cell line and Daudi human Burkitt's lymphoma cell line. PVDF membrane was probed with 1 µg/mL of Mouse Anti-Human Spi-B Monoclonal Antibody (Catalog # MAB7576) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for Spi-B at approximately 45 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

• Reactivity: Hu
• Applications: WB
• Clone: 769653
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Unconjugated
• Concentration: LYOPH

Spi-B Antibody (769653) Summary

• Immunogen: E. coli-derived recombinant human Spi-B
  Ala7-Leu115
  Accession # Q01892
• Specificity: Detects human Spi-B in direct ELISAs. In direct ELISAs, no cross-reactivity with recombinant mouse Spi-B is observed.
• Source: N/A
• Isotype: IgG2b
• Clonality: Monoclonal
• Host: Mouse
• Gene: SPIB
• Purity Statement: Protein A or G purified from hybridoma culture supernatant

Applications/Dilutions

• Dilutions:
  • Western Blot 1 ug/mL

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Sterile PBS to a final concentration of 0.5 mg/mL.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Spi-B Antibody (769653)

• Spi-B transcription factor (Spi-1/PU.1 related)
• SpiB
• Spi-B
• transcription factor Spi-B

Background

Spi-B is a 33-45 kDa member of the ets family of transcription factors. It is found in hematopoietic cells such as B cells and plasmacytoid dendritic cells (DC). In transitional B cells, Spi-B promotes their differentiation into follicular (naïve) B cells. In hematopoietic stem cells, Spi-B stimulates the generation of IFN-producing plasmacytoid DC at the expense of T, B and NK cell development. The 262 amino acid (aa) human Spi-B contains a dual transactivation region (aa 1-62) and an ets DNA-binding domain (aa 169-252). One 177 aa variant diverges after aa 162. Over aa 7-115, human Spi-B shares 72% and 70% aa identity with mouse and rat Spi-B, respectively.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: SPIB
• Uniprot:
  • Q01892(Human)