Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.
PTBP1 Antibody recognizes endogenous levels of total PTBP1 protein.
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the human PTBP1 protein. Antibodies are purified by protein A and peptide affinity chromatography.
PTBP1/hnRNP I belongs to the family of heterogeneous nuclear ribonucleoproteins (hnRNPs) that exert diverse functions in multiple aspects of RNA metabolism (1). PTBP1 is critical for regulating alternative splicing, IRES-mediated translation initiation, and increased stability of a variety of transcripts (2-4). Recently, PTBP1 was found to interact with PSMA3 from the 20S proteasome and is therefore implicated in the process of protein degradation (5,6). PTBP1 is ubiquitously expressed and shuttles between the nucleus and cytoplasm. Cellular localization of PTBP1 and its interactions with various factors determines the diversity of PTBP1 function (4).
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