PTBP1 (57kD RNA Binding Protein PPTB 1,57kD RNA Binding Protein PPTB1,57kD RNA-Binding Protein PPTB-1,Heterogeneous Nuclear Ribonucleoprotein I,Heterogeneous Nuclear Ribonucleoprotein Polypeptide I,hnRNP I,HNRNP-I,HNRNPI

Antibodies / Antibodies-Nuclear Proteins

-20°C

Supplied as a liquid PBS,  0.1% sodium azide,  50% glycerol.

Recombinant full length Human PTBP1.

This gene belongs to the subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are RNA-binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). These proteins are associated with pre-mRNAs in the nucleus and appear to influence pre-mRNA processing and other aspects of mRNA metabolism and transport. While all of the hnRNPs are present in the nucleus, some seem to shuttle between the nucleus and the cytoplasm. The hnRNP proteins have distinct nucleic acid binding properties. The protein encoded by this gene has four repeats of quasi-RNA recognition motif (RRM) domains that bind RNAs. This protein binds to the intronic polypyrimidine tracts that requires pre-mRNA splicing and acts via the protein degradation ubiquitin-proteasome pathway. It may also promote the binding of U2 snRNP to pre-mRNAs. This protein is localized in the nucleoplasm and it is also detected in the perinucleolar structure. Alternatively spliced transcript variants encoding different isoforms have been described.

Applications:
Suitable for use in Western Blot, Immunohistochemistry. Other applications not tested.

Recommended Dilution:
Western Blot: 1:500-1:2000
Immunohistochemistry: 1:50-1:200
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.