After being phosphorylated, phospho-STAT5 (STAT5A or STAT5B) dissociates from the EPO:EPOR complex, dimerizes, and transits to the nucleus where it activates transcription of target genes (Oda et al. 1998, and inferred from mouse homologs).
Oda, A, Koike, T, Druker, BJ, Sawada, K, Ozaki, K, Koizumi, K, Ikeda, Y, Handa, M, Fukada, Y, Takano, H
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