RNA-binding protein that acts as a regulator of mRNA transport and localization. Binds to the RNA sequence motif 5'-UUCAC-3'. Preferentially binds to N6-methyladenosine (m6A)-containing mRNAs and increases their stability (By similarity). Mediates the specific association of Vg1 RNA to microtubules. May regulate mRNA translation (By similarity). Binds specifically to the vegetal localization elements (VLE or VgLE) in the 3'-UTR of Vg1 and VegT mRNAs. Binds to the Vg1 and VegT mRNAs in both the nucleus and the cytoplasm. May regulate mRNA translation (By similarity). Acts as a transcription regulator (PubMed:1577195, PubMed:12957389). Binds to the 5'-[TA]GGTTACT-3' motif within element 3 of the TFIIIA gene promoter (PubMed:1577195, PubMed:12957389). Homodimer and multimer (By similarity). Associates with microtubules (By similarity). Interaction with a translocation machinery protein TRAPA of the endoplasmic reticulum (By similarity). Component of a mRNP complex, at least composed of DAZAP1, IGF2BP3, STAU and VgRBP60 (By similarity). The mRNP complex with DAZAP1, IGF2BP3, STAU and VgRBP60 is only found in the cytoplasm (By similarity). Interacts with a hnRNP 1 related RNA transport protein VgRBP60 both in the nucleus (in an RNA-independent manner) and the cytoplasm (in an RNA-dependent manner) (By similarity). Found in a B3 activator complex. Accumulates along the vegetal cortex in oocytes as oogenesis progresses ('late pathway' for RNA localization). Colocalizes with Vg1 RNA along the vegetal cortex (By similarity). Expressed in oocytes, kidney and pancreas (at protein level). Expressed in oocytes, kidney and pancreas. The third and fourth KH domains are involved in RNA binding and self-association. Stable self-association requires RNA (By similarity). Belongs to the RRM IMP/VICKZ family.