NCIt definition : Forkhead box protein O4 (505 aa, 54 kDa) is encoded by the human FOXO4 gene. This
protein plays a role in cell cycle arrest, transcriptional regulation, embryonic development
and insulin signaling.;
NCIt note : Forkhead Box Protein O4 is highly similar to forkhead transcription factor FKHR protein
within its single forkhead domain and contains serine- and proline-rich regions like
ENL protein. AFX-like proteins appear involved in cell cycle regulation. MLLT7 appears
to block cell cycle progression at G1, independent of Rb but dependent on p27(KIP1).
MLLT7 transcriptionally activates p27(KIP1). MLLT7 may also play a role in the insulin
signaling pathway. Acute leukemia chromosomal translocation t(X;11)(q13;q23) involves
MLLT7 fused to MLL/HRX that encodes a chimeric rogue activator protein.;