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Forkhead (FH) domain found in Forkhead box protein P1 (FOXP1) FOXP1, also called Mac-1-regulated Forkhead (MFH), is a transcription factor that is widely expressed and has a broad range of functions. It has been shown to have a role in cardiac, lung, and lymphocyte development. Deregulation of FOXP1 is an important contributor to the pathogenesis of diffuse large B-cell lymphoma (DLBCL), suggesting it may function as an oncogene. Loss of FOXP1 expression in breast cancer is associated with a worse outcome, suggesting that FOXP1 may function as a tumor suppressor in some tissues. Haploinsufficiency of the FOXP1 gene leads to a neurodevelopmental disorder termed FOXP1 syndrome, characterized by developmental delay, intellectual disability, autism spectrum disorder, speech delay, and dysmorphic features. The FH domain is a winged helix DNA-binding domain. FOX transcription factors recognize the core sequence 5'-(A/C)AA(C/T)A-3'.
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Jiyao W et al.(2023). "The conserved domain database in 2023.",