Anti-SPIB Antibody, clone 235D

Transcription factor Spi-B (UniProt: Q01892; also known as SPIB) is encoded by the SPIB gene (Gene ID: 6689) in human. SPIB is a member of the ETS family of transcription factors that is expressed in mature B cells, T-cell progenitors, and in plasmacytoid dendritic cells. It is reported to be a key regulator of human plasmacytoid dendritic cell development. It may also be required for B-cell receptor (BCR) signaling that is essential for normal B-cell development and antigenic stimulation. It serves as a sequence specific transcriptional activator that binds to the PU-box, a purine-rich DNA sequence (5′-GAGGAA-3′) that can act as a lymphoid-specific enhancer. SPIB contains a weakly acidic N-terminal transactivation domain (TAD; aa 1-31) that is followed by a second TAD (aa 41-61) that is rich in proline, serine, and threonine. Each of these domains may be required for transcriptional activation of a subset of target genes. Overexpression of SPIB is reported in all cases of blastic plasmacytoid dendritic cell (BPDC) neoplasms, but not in its cutaneous mimics. It can be used as a novel immunohistochemical marker for human BPDC neoplasm. (Ref.: Montes-Moreno, S., et al. (2013). Blood. 121(4); 643-647).

His-tagged recombinant human transcription factor Spi-B (SPIB).

Quality Control Testing

Evaluated by Immunohistochemistry (Paraffin) in human tonsil tissue sections.

Immunohistochemistry (Paraffin) Analysis: A 1:250 dilution of this antibody detected SPIB in human tonsil tissue sections.

Tested Applications

Western Blotting Analysis: A representative lot detected SPIB in Western Blotting application (Montes-Moreno, S., et al. (2013). Blood. 121(4); 643-7).

Immunohistochemistry (Paraffin) Analysis (IHC(P)): A representative lot detected SPIB in Immunohistochemistry application (Montes-Moreno, S., et al. (2013). Blood. 121(4); 643-7).

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user

Anti-SPIB, clone 235D, Cat. No. MABE2044, is a mouse monoclonal antibody that detects transcription factor Spi-B (SPIB) and is tested for use in Immunohistochemistry (Paraffin) and Western Blotting.

Clone 235D is a mouse monoclonal antibody that detects Transcription factor Spi-B (SPIB).

Purified mouse monoclonal antibody IgG1 in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Recommended storage: +2°C to +8°C.

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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