RNA-binding protein required for the microtubule-dependent transport of neuronal RNA from the cell body to the dendrite. As protein synthesis occurs within the dendrite, the localization of specific mRNAs to dendrites may be a prerequisite for neurite outgrowth and plasticity at sites distant from the cell body. Identified in a mRNP complex, at least composed of DHX9, DDX3X, ELAVL1, HNRNPU, IGF2BP1, ILF3, PABPC1, PCBP2, PTBP2, STAU1, STAU2, SYNCRIP and YBX1. Interacts with the exportin XPO5. This requires RNA and RAN bound to GTP (By similarity). Interacts with microtubules. Isoform 2 and isoform 3 may also interact with ribosomes, and this association is independent of translation. Interacts with TRIM71 (via NHL repeats) in an RNA-dependent manner (By similarity). Shuttles between the nucleolus, nucleus and the cytoplasm. Nuclear export of isoform 1 is independent of XPO1/CRM1 and may require the exportin XPO5. Nuclear export of isoform 2 and isoform 3 can occur by both XPO1/CRM1-dependent and XPO1/CRM1-independent pathways. Found in large cytoplasmic ribonucleoprotein (RNP) granules which are present in the actin rich regions of myelinating processes and associated with microtubules, polysomes and the endoplasmic reticulum. Also recruited to stress granules (SGs) upon inhibition of translation or oxidative stress. These structures are thought to harbor housekeeping mRNAs when translation is aborted. Expressed in both somata and dendrites of hippocampal neurons. The DRBM 3 domain appears to be the major RNA-binding determinant (By similarity). This domain also mediates interaction with XPO5 and is required for XPO1/CRM1-independent nuclear export. XPO1/CRM1-dependent nuclear export is mediated by residues 4-14 and is abrogated by mutagenesis of Ile-4 or Leu-12. XPO1/CRM1-dependent nuclear export is mediated by residues 4-14 and is abrogated by mutagenesis of Ile-4 or Leu-12.