Domain schematics for each factor are displayed. RRM, RNA recognition motif;φRRM, pseudo RRM; G, glycine-rich region; P, proline-rich region; RGG, arginine/glycine/glycine repeat region; P, Q, proline/glutamine rich; RS, arginine/serine-rich; KH – K homology domain. Binding preferences for each factor are specified for hnRNP L (66), hnRNP LL (64), PSF (75), CELF2 (78), TIA-1 (85), SRSF1(115), and Sam68 (97).