Mass spectroscopy identifies the splicing associated proteins , PSF , hnRNP H 3 , hnRNP A2 / B1 , and TLS / FUS as interacting partners of the ZNF 198 protein associated with rearrangement in myeloproliferative disease . ^^^ PSF is also known to interact with PTB , another member of the hnRNP family of proteins , and we further demonstrated that PTB interacts with ZNF 198 . ^^^