May play a role in the regulation of mRNA stability. Binds to the 3'-most 134 nt of the SERPINE1/PAI1 mRNA, a region which confers cyclic nucleotide regulation of message decay. Seems to play a role in PML-nuclear bodies formation. Interacts with SPIN1 (By similarity). Interacts with CHD3 and TDRD3. Interacts with ZDHHC17 (via ANK repeats) (By similarity).