Polypyrimidine tract-binding protein 1, PTB, 57 kDa RNA-binding protein PPTB-1, Heterogeneous nuclear ribonucleoprotein I, hnRNP I, PTBP1, PTB
Product description
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.1) Kanda, T., et al. J. Viral Hepat. 17(9):618-623(2010)
Immunogen
This PTBP1 antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 26-55 amino acids from the N-terminal region of human PTBP1.
Western blot analysis in MCF-7 cell line lysates (35ug/lane).
Application Notes
For WB starting dilution is: 1:1000:
Additional Information
Form
Liquid
Storage Instructions
Store at 4˚C for three months and -20˚C, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.