Spleen Focus Forming Virus (SFFV) Proviral Integration Oncogene Spi1 (SPI1) antibody

Antigen: Spleen Focus Forming Virus (SFFV) Proviral Integration Oncogene Spi1 (SPI1)

Synonyms: OF, PU.1, SFPI1, SPI-1, SPI-A

Clonality: Monoclonal (G148-74)

Host: Mouse

Reactivity: Human

Conjugate: Un-conjugated

Application: Western Blotting (WB), Gel Shift (GS), Immunoprecipitation (IP)

Catalog no.: ABIN967452

Additional Information

Alternative name: PU.1

Immunogen: PU.1 Fusion Protein

Format: Liquid

Isotype: IgG2a

Clone: G148-74

Description: PU.1 is an ets-related transcription factor expressed in B lymphocytes and macrophages. It was initially identified as the oncogene Spi-1 which was found to block erythroblast differentiation. PU.1 functions by binding transcriptional control elements such as µB in the immunoglobulin heavy chain enhancer and pi adjacent to µE2. It has been shown to form a complex with NF-EM5, a B cell transcription factor, resulting in the activation of the immunoglobulin kappa 3' enhancer. PU.1 also appears to be critically involved in the control of monocyte development by regulating the expression of the macrophage colony-stimulating factor receptor. PU.1 runs as a 40-42 kDa protein on SDS-PAGE. G148-74 recognizes human PU.1, an Ets-related transcription factor. PU.1 is expressed in B lymphocytes and macrophages and like other Ets-related proteins, binds to consensus sites in DNA through an 85 amino acid Ets domain in the carboxyl terminal region of the protein. The antibody was raised against a bacterially expressed GST-PU.1 fusion protein.

Characteristics: 1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
2. Please refer to us for technical protocols.
3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.

Molecular Weight: 40-42 kDa

Application Details

Application Notes: Applications include gel shift, western blot analysis (1-2 µg/ml) and immunoprecipitation. The antibody has been shown to recognize in vitro translated PU.1 and PU.1 expressed as a recombinant protein in bacteria. In. In gel shift assays using µB as a probe (µB is a transcriptional element in the immunoglobulin heavy chain enhancer), G148-74 supershifts the complex of probe and PU.1.

Concentration: 0.5 mg/ml

Purity: Purified

Purification: Purified from tissue culture supernatant or ascites by affinity chromatography.

Buffer: Aqueous buffered solution.

Preservative: 0.09% Sodium azide.

Storage: Store undiluted at 4°C.

Restrictions: For Research Use only

Publications

Pongubala, Nagulapalli, Klemsz et al.: "PU.1 recruits a second nuclear factor to a site important for immunoglobulin kappa 3' enhancer activity." in: Molecular and cellular biology, Vol. 12, Issue 1, pp. 368-78, 1992 (PubMed).

Klemsz, McKercher, Celada et al.: "The macrophage and B cell-specific transcription factor PU.1 is related to the ets oncogene." in: Cell, Vol. 61, Issue 1, pp. 113-24, 1990 (PubMed).

Moreau-Gachelin, Ray, Mattei et al.: "The putative oncogene Spi-1: murine chromosomal localization and transcriptional activation in murine acute erythroleukemias." in: Oncogene, Vol. 4, Issue 12, pp. 1449-56, 1990 (PubMed).

Zhang, Hetherington, Chen et al.: "The macrophage transcription factor PU.1 directs tissue-specific expression of the macrophage colony-stimulating factor receptor." in: Molecular and cellular biology, Vol. 14, Issue 1, pp. 373-81, 1994 (PubMed).

Shin, Koshland: "Ets-related protein PU.1 regulates expression of the immunoglobulin J-chain gene through a novel Ets-binding element." in: Genes & development, Vol. 7, Issue 10, pp. 2006-15, 1993 (PubMed).

Rivera, Stuiver, Steenbergen et al.: "Ets proteins: new factors that regulate immunoglobulin heavy-chain gene expression." in: Molecular and cellular biology, Vol. 13, Issue 11, pp. 7163-9, 1993 (PubMed).