RNA-binding protein that binds to AU-rich sequences (AREs) of target mRNAs. May also bind poly-A tracts via RRM 3. May be involved in neuronal differentiation and maintenance (By similarity). RRM 1 and RRM 2 bind cooperatively to AU-rich sequences in target mRNAs. RRM 3 binds to poly-A mRNA sequences (By similarity). Belongs to the RRM elav family.