Involved in postimplantation and gastrulation stages of development. Involved in the nucleocytoplasmic shuttling of STAU2. Binds to DNA and RNA (By similarity). Found in a cytoplasmic RNP complex with STAU2. Interacts with STAU2. Does not interact with STAU1 (By similarity). Associated with chromosome foci in meiotic cells. Localizes in somatodendritic compartment of primary hippocampal neurons. Colocalizes with STAU2 in several cytosolic RNA granules (By similarity). Expressed in lung, liver, lymphocytes, heart, pancreas, placenta, brain and kidney. Contaminating sequence. Potential poly-A sequence. Contaminating sequence. Potential poly-A sequence. Truncated N-terminus.