Involved in mRNA processing and export (PubMed:1429834, PubMed:8675010, PubMed:15542855, PubMed:19061647). Required for efficient splicing of a large set of pre-mRNAs by efficient co-transcriptional recruitment of the splicing machinery (PubMed:19061647, PubMed:23209445). Remains associated with the mRNP during early steps of translation elongation (PubMed:15542855). Interacts with RRP6. Nuclear at steady state and its import is mediated by the karyopherin MTR10 (PubMed:14676199, PubMed:15542855). Export is dependent on active transcription and the export of mRNAs in general (PubMed:8675010, PubMed:14676199). Methylated by HMT1. The methylation is required for nuclear export. Present with 78700 molecules/cell in log phase SD medium. Belongs to the RRM GAR family.