功能
function:Part of a post-splicing multiprotein complex involved in both mRNA nuclear export and mRNA surveillance. Involved in nonsense-mediated decay (NMD) of mRNAs containing premature stop codons. Associates preferentially with mRNAs produced by splicing. Does not interact with pre-mRNAs, introns, or mRNAs produced from intronless cDNAs. Associates with both nuclear mRNAs and newly exported cytoplasmic mRNAs. Complex with MAGOH is a component of the nonsense mediated decay (NMD) pathway.,sequence caution:Chimeric cDNA. A chimeric cDNA originating from chromosomes 1 and 5.,similarity:Contains 1 RRM (RNA recognition motif) domain.,subunit:Found in a mRNA splicing-dependent exon junction complex (EJC) with DEK, NCBP1, NCBP2, NXF1, RBM8A, RNPS1, RENT2, RENT3A, RENT3B, SRRM1 and THOC4. Found in a post-splicing complex with NXF1, RBM8A, RENT1, RENT2, RENT3A, RENT3B and RNPS1. Interacts with BAT1, MAGOH, OVCA1, RENT3B, RNPS1, SRRM1 and THOC4. Identified in the spliceosome C complex, at least composed of AQR, ASCC3L1, C19orf29, CDC40, CDC5L, CRNKL1, DDX23, DDX41, DDX48, DDX5, DGCR14, DHX35, DHX38, DHX8, EFTUD2, FRG1, GPATC1, HNRPA1, HNRPA2B1, HNRPA3, HNRPC, HNRPF, HNRPH1, HNRPK, HNRPM, HNRPR, HNRPU, KIAA1160, KIAA1604, LSM2, LSM3, MAGOH, MORG1, PABPC1, PLRG1, PNN, PPIE, PPIL1, PPIL3, PPWD1, PRPF19, PRPF4B, PRPF6, PRPF8, RALY, RBM22, RBM8A, RBMX, SART1, SF3A1, SF3A2, SF3A3, SF3B1, SF3B2, SF3B3, SFRS1, SKIV2L2, SNRPA1, SNRPB, SNRPB2, SNRPD1, SNRPD2, SNRPD3, SNRPE, SNRPF, SNRPG, SNW1, SRRM1, SRRM2, SYF2, SYNCRIP, TFIP11, THOC4, U2AF1, WDR57, XAB2 and ZCCHC8. Interacts with WIBG/PYM; the interaction is direct and leads to dissociate the EJC from spliced mRNAs.,tissue specificity:Ubiquitous.,