Summary

Name FOXP3
Full Name Forkhead box protein P3
Synonyms Scurfin | IPEX
Primary ID Q9BZS1
Links - -
Type protein
Relations 11
Pathways T-lymphocytes: IL10 transcriptional regulation, T-Lymphocyte: IL10, T-Lymphocyte: TGF beta
Inhibitors 2-hydroxyglutarate
Function Transcriptional regulator which is crucial for the development and inhibitory function of regulatory T-cells (Treg). Plays an essential role in maintaining homeostasis of the immune system by allowing the acquisition of full suppressive function and stability of the Treg lineage, and by directly modulating the expansion and function of conventional T-cells. Can act either as a transcriptional repressor or a transcriptional activator depending on its interactions with other transcription factors, histone acetylases and deacetylases. The suppressive activity of Treg involves the coordinate activation of many genes, including CTLA4 and TNFRSF18 by FOXP3 along with repression of genes encoding cytokines such as interleukin-2 (IL2) and interferon-gamma (IFNG). Inhibits cytokine production and T-cell effector function by repressing the activity of two key transcription factors, RELA and NFATC2 (PubMed:15790681). Mediates transcriptional repression of IL2 via its association with histone acetylase KAT5 and histone deacetylase HDAC7 (PubMed:17360565). Can activate the expression of TNFRSF18, IL2RA and CTLA4 and repress the expression of IL2 and IFNG via its association with transcription factor RUNX1 (PubMed:17377532). Inhibits the differentiation of IL17 producing helper T-cells (Th17) by antagonizing RORC function, leading to down-regulation of IL17 expression, favoring Treg development (PubMed:18368049). Inhibits the transcriptional activator activity of RORA (PubMed:18354202). Can repress the expression of IL2 and IFNG via its association with transcription factor IKZF4 (By similarity).

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Modifications Tables

Relations

Regulator Mechanism target score
+ down-regulates img/direct_inhibition.png phosphorylation FOXP3 0.407
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/indirect_inhibition.png FOXP3 0.587
Publications: 2 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png FOXP3 0.535
Publications: 2 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation IL10 0.5
Publications: 1 Organism: Homo Sapiens
+ down-regulates quantity by repression img/direct_inhibition.png transcriptional regulation FOXP3 0.499
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png FOXP3 0.489
Publications: 2 Organism: Homo Sapiens
+ down-regulates activity img/indirect_inhibition.png chemical inhibition FOXP3 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png T-reg_differentiation 0.7
Publications: 1 Organism: Homo Sapiens