Plays an essential role in the survival of diffuse-type gastric cancer cells. Acts as a nucleolar anchoring protein for DDX47. May be involved in regulation of gene expression at the post-transcriptional level or in ribosome biogenesis in cancer cells (By similarity). Interacts with the GTP form of RRAGA, RRAGC and RRAGD. Interacts with NIP7. Interacts with DDX18; the interaction is RNA-dependent. Interacts with DDX47; the interaction is RNA-dependent (By similarity). Localizes in the nucleolar-organizing region during ribosome biogenesis. Phosphorylated.