PU.1/Spi-1 Antibody (823123) [Alexa Fluor® 488]

• Reactivity: Mu
• Applications: WB, ICC/IF
• Clone: 823123
• Clonality: Monoclonal
• Host: Rat
• Conjugate: Alexa Fluor 488

PU.1/Spi-1 Antibody (823123) [Alexa Fluor® 488] Summary

• Immunogen: E. coli-derived recombinant mouse Spi-1
  Met1-Lys169
  Accession # P17433
• Specificity: Detects mouse PU.1/Spi-1 in ELISAs. In direct ELISAs, no cross-reactivity with recombinant human PU.1/Spi-1 is observed. Detects mouse and rat PU.1/Spi-1 in Western Blots
• Isotype: IgG2a
• Clonality: Monoclonal
• Host: Rat
• Purity Statement: Protein A or G purified

Applications/Dilutions

• Dilutions:
  • Immunocytochemistry
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

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

Alternate Names for PU.1/Spi-1 Antibody (823123) [Alexa Fluor® 488]

• hematopoietic transcription factor PU.1
• OF
• PU.1
• SFPI1
• SFPI131 kDa transforming protein
• SPI-1 proto-oncogene
• SPI1
• Spi-1
• SPI-A
• spleen focus forming virus (SFFV) proviral integration oncogene spi1,31 kDa-transforming protein
• transcription factor PU.1

Background

Spi-1 (SFFV proviral integration 1 protein; also PU.1 and Sfpi1) is a 37-41 kDa member of the ets family of transcription factors. It is both an RNA and DNA binding protein that is found in hematopoietic cells such as B cells, neutrophils, macrophages and dendritic cells (DC). Spi-1 can act as both a transcriptional activator and repressor. In DC, Spi-1 promotes the expression of CD80, CD86 and CD11b, while in proerythroblasts it blocks GATA-1 induced transcriptional activation. Spi-1 binds to DNA as a monomer and interacts with multiple factors such as Runx-1, IRF8, GATA-1 and c-Jun. Mouse Spi-1 is 272 amino acids (aa) in length. It contains a transactivation region (aa 7-117), a PEST domain (aa 118-164), and a DNA-binding domain (aa 165-266). Phosphorylation on Ser41, 142 and 148 increases activity. There is one alternative start site at Met7. Over aa 1-169, mouse Spi-1 shares 88% and 81% aa identity with rat and human Spi-1, 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.