Might function as a transcriptional repressor. Binds RNA, POLR2C, SF1 and calmodulin. Interacts with PTK2B and TDRD3 (By similarity). Forms a complex with REC8, PRDM9, SYCP3 and SYCP1; complex formation is dependent of phosphorylated form of REC8 and requires PRDM9 bound to hotspot DNA; EWSR1 joins PRDM9 with the chromosomal axis through REC8 (PubMed:27932493). Relocates from cytoplasm to ribosomes upon PTK2B/FAK2 activation. Phosphorylated; calmodulin-binding inhibits phosphorylation of Ser-266. Highly methylated on arginine residues. Methylation is mediated by PRMT1 and, at lower level by PRMT8 (By similarity). Binds calmodulin in the presence, but not in the absence, of calcium ion. Belongs to the RRM TET family.