UNIPROT #

P26599

PROTEIN NAME

PTBP1

SYNONYMS

57 kDa RNA binding protein PPTB 1 antibody; 57 kDa RNA-binding protein PPTB-1 antibody; Heterogeneous nuclear ribonucleoprotein I antibody; Heterogeneous Nuclear Ribonucleoprotein Polypeptide I antibody; hnRNP I antibody; HNRNP-I antibody; HNRNPI antibody; HNRPI antibody; MGC10830 antibody; MGC8461 antibody; Polypyrimidine tract binding protein (heterogeneous nuclear ribonucleoprotein I) antibody; Polypyrimidine Tract Binding Protein 1 antibody; Polypyrimidine tract binding protein antibody; Polypyrimidine tract-binding protein 1 antibody; pPTB antibody; PTB 1 antibody; PTB 2 antibody; PTB 3 antibody; PTB 4 antibody; PTB antibody; PTB T antibody; PTB1 antibody; PTB2 antibody; PTB3 antibody; PTB4 antibody; PTBP 1 antibody; PTBP1 antibody; PTBP1_HUMAN antibody; PTBT antibody; RNA Binding Protein antibody

SUBCELLULAR LOCATION

Nucleus.

FUNCTION

Plays a role in pre-mRNA splicing and in the regulation of alternative splicing events. Activates exon skipping of its own pre-mRNA during muscle cell differentiation. Binds to the polypyrimidine tract of introns. May promote RNA looping when bound to two separate polypyrimidine tracts in the same pre-mRNA. May promote the binding of U2 snRNP to pre-mRNA. Cooperates with RAVER1 to modulate switching between mutually exclusive exons during maturation of the TPM1 pre-mRNA. Represses the splicing of MAPT/Tau exon 10. In case of infection by picornaviruses, binds to the viral internal ribosome entry site (IRES) and stimulates the IRES-mediated translation.