Plays a role in cytoplasmic trafficking of RNA. Binds to the cis-acting response element, A2RE. May be involved in pre-mRNA splicing. Identified in the spliceosome C complex. Component of ribonucleosomes. An older version of this entry represented the conceptual translation of what was thought to be HNRNPA3 but which was in fact a pseudogene (HNRPA3P1/FBRNP) located on chromosome 10.