Paired Box Protein PAX-5 (PAX-5) Antibody – Rabbit Monoclonal

This gene encodes a member of the paired box (PAX) family of transcription factors. The central feature of this gene family is a novel, highly conserved DNA-binding motif, known as the paired box. PAX proteins are important regulators in early development, and alterations in the expression of their genes are thought to contribute to neoplastic transformation. This gene encodes the B-cell lineage specific activator protein that is expressed at early, but not late stages of B-cell differentiation. Its expression has also been detected in developing CNS and testis and so the encoded protein may also play a role in neural development and spermatogenesis. This gene is located at 9p13, which is involved in t(9;14)(p13;q32) translocations recurring in small lymphocytic lymphomas of the plasmacytoid subtype, and in derived large-cell lymphomas. This translocation brings the potent E-mu enhancer of the IgH gene into close proximity of the PAX5 promoter, suggesting that the deregulation of transcription of this gene contributes to the pathogenesis of these lymphomas. Alternatively spliced transcript variants encoding different isoforms have been described but their biological validity has not been determined. [provided by RefSeq, Jul 2008]

PAX5: May play an important role in B-cell differentiation as well as neural development and spermatogenesis. Involved in the regulation of the CD19 gene, a B-lymphoid-specific target gene. Interacts with DAXX. Binds DNA as a monomer. Binds TLE4.

Protein type: Oncoprotein

Chromosomal Location of Human Ortholog: 9p13

Cellular Component: nucleus

Molecular Function: protein binding

Biological Process: transcription from RNA polymerase II promoter; negative regulation of histone H3-K9 methylation; nervous system development; organ morphogenesis; multicellular organismal development; positive regulation of transcription from RNA polymerase II promoter; spermatogenesis; negative regulation of transcription from RNA polymerase II promoter; humoral immune response

Disease: Leukemia, Acute Lymphoblastic, Susceptibility To, 3