... localization ofPBX1 and EXD proteins depends on nuclear import and export signals and is modulated by association with PREP1 and HTH. Genes Dev 13, 946–953.C. Hyman-Walsh et al. Meis2 transcriptional ... within theseproteins that can mediate both positive and negativeinfluences on transcriptional activity. Interestingly,splice variants of mammalian Meis1 and Meis2, and Drosophila HTH, that encode ... sequences shown are human Meis1, Meis2, Meis3, Prep1, and Prep2, Xenopus laevis Meis1, Meis3, and Prep (XlMs1, XlMs3, and XlPrep), Drosophila melanogaster HTH (DmHth), and a Meis-like pro-tein...