Polyglutamine tract binding protein 1 (PQBP1) with a WW domain plays an important role in regulation of transcription activity. WW domain binds to proline-rich motifs in other proteins. In addition to the WW domain, it also possesses a polyglutamine-binding region (in polar-amino-acid-rich domain) and a DR/ER stretch involved in transcriptional control. It is ubiquitously expressed in neurons throughout the brain specifically in hippocampus, cerebellar cortex and olfactory bulb. It localizes in the nucleus.
Synonyms: Anti-MRX2; Anti-MRX55; Anti-MRXS8; Anti-RENS1; Anti-SHS
Storage: -20C
Application: All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org)and as a result, are supported by the most extensive characterization in the industry. The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.
Biochem Physiol Actions: During transcriptional control, PQBP1 (polyglutamine binding protein 1) binds to the polyQ region of the transcription factor BRN2 (brain-specific homeobox/POU domain protein 2) to silences transcription. Mutation in PQBP1 causes X-linked mental retardation, microcephaly, short stature, spastic paraplegia and midline defects. It interacts with RNA polymerase II and other transcription factors. In addition, it has been reported in RNA transport or cytoplasmic RNA processing.
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