ETV1 (Ets variant gene 1) is a transcription factor. Several members of the Ets gene family encode sequence-specific DNA binding proteins that recognize DNA sequences with a centrally located 5'-GGAA-3' element. All of the Ets proteins recognize the same central core sequence but each protein interacts with unique sequences that flank this core. ER81 (also designated ETV1) binds the motif 5'-CGGAA/T-3'. ER81 is highly e, Xenopus/Amphibian,pressed in brain, testis, lung and heart. ER81 is also moderately e, Xenopus/Amphibian,pressed in spleen,Porcineancreas, colon and small intestine. During development, ER81 displays a unique e, Xenopus/Amphibian,pression patterns which suggests that this transcriptional factor might play an important role in organogenesis. ERK-1 activates ER81 transcriptional activity while MAPKAP kinase 2 inhibits ER81.