PTBP2 RNA-binding protein which binds to intronic polypyrimidine tracts and mediates negative regulation of exons splicing. May antagonize in a tissue-specific manner the ability of NOVA1 to activate exon selection. In addition to its function in pre-mRNA splicing, plays also a role in the regulation of translation. Isoform 5 has a reduced affinity for RNA. Mainly expressed in brain although also detected in other tissues like heart and skeletal muscle. Isoform 1 and isoform 2 are specifically expressed in neuronal tissues. Isoform 3 and isoform 4 are expressed in non-neuronal tissues. Isoform 5 and isoform 6 are truncated forms expressed in non-neuronal tissues. 6 alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: RNA processing; RNA-binding
Chromosomal Location of Human Ortholog: 3|3 G1
Cellular Component:  growth cone; neuronal cell body; nucleus; spliceosomal complex
Molecular Function:  mRNA binding; nucleic acid binding; protein binding; RNA binding
Biological Process:  mRNA processing; mRNA splice site selection; negative regulation of RNA splicing; regulation of neural precursor cell proliferation; RNA splicing
Reference #:  Q91Z31 (UniProtKB)
Alt. Names/Synonyms: Brain-enriched polypyrimidine tract-binding protein; Brain-enriched PTB; Brptb; Neural polypyrimidine tract-binding protein; Nptb; polypyrimidine tract binding protein 2; Polypyrimidine tract-binding protein 2; Ptb2; Ptbp2; RRM-type RNA-binding protein brPTB
Gene Symbols: Ptbp2
Molecular weight: 57,489 Da
Basal Isoelectric point: 8.72  Predict pI for various phosphorylation states
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Protein Structure Not Found.

Cross-references to other databases:  STRING  |  BioGPS  |  Pfam  |  Phospho.ELM  |  NetworKIN  |  UniProtKB  |  Entrez-Gene  |  Ensembl Gene