FOXO1 + FOX3 + FOX4 belong to the forkhead family of transcription factors. FOXO1 (FKHR or ForkHead in Rhabdomyosarcoma) is a 70 kDa protein. Recent studies have shown that this protein can act as either a coactivator or a corepressor of nuclear receptor activity. This action is mediated through the LXXLL motif found in the C terminus of the FOXO1A protein. The specific function of the gene has not yet been determined.FOX3 probably functions as a trigger for apoptosis through expression of genes necessary for cell death. Translocation of the FOXO3 gene with the MLL gene is associated with secondary acute leukemia.FOX4 is a forkhead transcription factor involved in the regulation of the insulin signaling pathway. It binds to insulin-response elements (IREs) and can activate transcription of IGFBP1. FOXO4 down-regulates expression of HIF1A and suppresses hypoxia-induced transcriptional activation of HIF1A-modulated genes. It is also involved in negative regulation of the cell cycle.
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Protein Aliases: AF6q21 protein; AFX; AFX1; Afxh; FKHR; FKHRL1; Fork head domain transcription factor AFX1; forkhead box O1a; forkhead box O3A; Forkhead box protein O1; Forkhead box protein O1A; Forkhead box protein O3; Forkhead box protein O4; forkhead homolog (rhabdomyosarcoma) like 1; Forkhead in rhabdomyosarcoma; Forkhead in rhabdomyosarcoma-like 1; forkhead protein; forkhead protein 1; forkhead protein FKHR2; forkhead, Drosophila, homolog of, in rhabdomyosarcoma; forkhead, Drosophila, homolog of, in rhabdomyosarcoma-like 1; FOXO1; FOXO1A; FOXO3; FOXO3A; FOXO4; MLLT7; myeloid/lymphoid or mixed lineage-leukemia translocation to 7 homolog; myeloid/lymphoid or mixed-lineage leukemia (trithorax homolog, Drosophila); translocated to, 7
Gene Aliases: 1110048B16Rik; 2010203A17Rik; AF6q21; AFX; AFX1; Afxh; AI876417; C76856; FKH1; FKHR; Fkhr1; Fkhr2; Fkhr3; FKHRL1; FKHRL1P2; FOXO1; FOXO1A; FOXO2; FOXO3; FOXO3A; FOXO4; MLLT7