PQBP1 Human; Polyglutamine Binding Protein 1 Human Recombinant; Golyglutamine binding protein 1; Polyglutamine tract-binding protein 1; 38kDa nuclear protein containing a WW domain; mental retardation X-linked 55; Sutherland-Haan X-linked mental retardation syndrome; Npw38; MRXS3; MRX55; MRXS8; RENS1; SHS

For Research Use Only. Not for use in diagnostic procedures.

E Coli

Greater than 95% as determined by SDS-PAGE.

The PQBP1 solution (0.5mg/1ml) contains 20mM Tris-HCl buffer (pH 8.0), 1mM DTT, 100mM NaCl and 20% glycerol.
Sterile Filtered colorless solution.

Small volumes of PQBP1 recombinant protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

Description: PQBP1 Human Recombinant produced in E Coli is a single polypeptide chain containing 289 amino acids (1-265) and having a molecular mass of 33.0kDa.PQBP1 is fused to a 24 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Introduction: PQBP1 is a transcription repressor which is connected to polyglutamine tract-containing transcription regulators and connective genes for neurodegenerative disorders. PQBP1 is restricts to the nucleus and can be found in neurons all over the brain, with high levels in hippocampus, olfactory bulb and cerebellar cortex. PQBP1 holds a WWP/WW domain that binds proline-rich motifs and a C2 domain which is able to stimulate Ca2+-dependent phospholipid signaling.

RECOMBINANT & NATURAL PROTEINS; Recombinant Proteins

6,981 Da

polyglutamine binding protein 1

polyglutamine-binding protein 1; 38 kDa nuclear protein containing a WW domain; polyglutamine tract-binding protein 1

Polyglutamine-binding protein 1

NPW38; PQBP-1; Npw38??[Similar Products]

PQBP1_HUMAN

This gene encodes a nuclear polyglutamine-binding protein that is involved with transcription activation. The encoded protein contains a WW domain. Mutations in this gene have been found in patients with Renpenning syndrome 1 and other syndromes with X-linked mental retardation. Multiple alternatively spliced transcript variants that encode different protein isoforms have been described for this gene.[provided by RefSeq, Nov 2009]

PQBP1: May suppress the ability of POU3F2 to transactivate the DRD1 gene in a POU3F2 dependent manner. Can activate transcription directly or via association with the transcription machinery. May be involved in ATXN1 mutant-induced cell death. The interaction with ATXN1 mutant reduces levels of phosphorylated RNA polymerase II large subunit. Defects in PQBP1 are the cause of Renpenning syndrome 1 (RENS1); also known as Sutherland-Haan X-linked mental retardation syndrome (SHS) or X-linked mental retardation syndromes MRXS3/MRXS8/MRX55. The clinical features are mental retardation, microcephaly, short stature, and small testes. The craniofacies tends to be narrow and tall with upslanting palpebral fissures, abnormal nasal configuration, cupped ears, and short philtrum. The nose may appear long or bulbous, with overhanging columella. Less consistent manifestations include ocular colobomas, cardiac malformations, cleft palate, and anal anomalies. RENS1 is more frequently in males than in females where little or no expression is found. 10 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription, coactivator/corepressor

Chromosomal Location of Human Ortholog: Xp11.23

Cellular Component: nucleoplasm; stress granule; cytoplasm; nuclear speck; nucleus

Molecular Function: ribonucleoprotein binding; DNA binding; transcription coactivator activity

Biological Process: alternative nuclear mRNA splicing, via spliceosome; transcription, DNA-dependent; regulation of transcription, DNA-dependent; regulation of RNA splicing; regulation of dendrite morphogenesis; neurite development

Disease: Renpenning Syndrome 1

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