2as5: Difference between revisions
New page: left|200px<br /> <applet load="2as5" size="450" color="white" frame="true" align="right" spinBox="true" caption="2as5, resolution 2.7Å" /> '''Structure of the DNA... |
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[[Image:2as5.gif|left|200px]]<br /> | [[Image:2as5.gif|left|200px]]<br /><applet load="2as5" size="350" color="white" frame="true" align="right" spinBox="true" | ||
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caption="2as5, resolution 2.7Å" /> | caption="2as5, resolution 2.7Å" /> | ||
'''Structure of the DNA binding domains of NFAT and FOXP2 bound specifically to DNA.'''<br /> | '''Structure of the DNA binding domains of NFAT and FOXP2 bound specifically to DNA.'''<br /> | ||
==Overview== | ==Overview== | ||
Antigen stimulation of immune cells activates the transcription factor | Antigen stimulation of immune cells activates the transcription factor NFAT, a key regulator of T cell activation and anergy. NFAT forms cooperative complexes with the AP-1 family of transcription factors and regulates T cell activation-associated genes. Here we show that regulatory T cell (Treg) function is mediated by an analogous cooperative complex of NFAT with the forkhead transcription factor FOXP3, a lineage specification factor for Tregs. The crystal structure of an NFAT:FOXP2:DNA complex reveals an extensive protein-protein interaction interface between NFAT and FOXP2. Structure-guided mutations of FOXP3, predicted to progressively disrupt its interaction with NFAT, interfere in a graded manner with the ability of FOXP3 to repress expression of the cytokine IL2, upregulate expression of the Treg markers CTLA4 and CD25, and confer suppressor function in a murine model of autoimmune diabetes. Thus by switching transcriptional partners, NFAT converts the acute T cell activation program into the suppressor program of Tregs. | ||
==Disease== | ==Disease== | ||
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==About this Structure== | ==About this Structure== | ||
2AS5 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with MG as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http:// | 2AS5 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=MG:'>MG</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AS5 OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Bates, D | [[Category: Bates, D L.]] | ||
[[Category: Borde, M.]] | [[Category: Borde, M.]] | ||
[[Category: Chen, L.]] | [[Category: Chen, L.]] | ||
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[[Category: Han, A.]] | [[Category: Han, A.]] | ||
[[Category: Rao, A.]] | [[Category: Rao, A.]] | ||
[[Category: Stroud, J | [[Category: Stroud, J C.]] | ||
[[Category: Wu, Y.]] | [[Category: Wu, Y.]] | ||
[[Category: MG]] | [[Category: MG]] | ||
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[[Category: winged helix-turn-helix]] | [[Category: winged helix-turn-helix]] | ||
''Page seeded by [http:// | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 16:30:26 2008'' | ||
Revision as of 17:30, 21 February 2008
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Structure of the DNA binding domains of NFAT and FOXP2 bound specifically to DNA.
OverviewOverview
Antigen stimulation of immune cells activates the transcription factor NFAT, a key regulator of T cell activation and anergy. NFAT forms cooperative complexes with the AP-1 family of transcription factors and regulates T cell activation-associated genes. Here we show that regulatory T cell (Treg) function is mediated by an analogous cooperative complex of NFAT with the forkhead transcription factor FOXP3, a lineage specification factor for Tregs. The crystal structure of an NFAT:FOXP2:DNA complex reveals an extensive protein-protein interaction interface between NFAT and FOXP2. Structure-guided mutations of FOXP3, predicted to progressively disrupt its interaction with NFAT, interfere in a graded manner with the ability of FOXP3 to repress expression of the cytokine IL2, upregulate expression of the Treg markers CTLA4 and CD25, and confer suppressor function in a murine model of autoimmune diabetes. Thus by switching transcriptional partners, NFAT converts the acute T cell activation program into the suppressor program of Tregs.
DiseaseDisease
Known diseases associated with this structure: Speech-language disorder-1 OMIM:[605317]
About this StructureAbout this Structure
2AS5 is a Protein complex structure of sequences from Homo sapiens with as ligand. Full crystallographic information is available from OCA.
ReferenceReference
FOXP3 controls regulatory T cell function through cooperation with NFAT., Wu Y, Borde M, Heissmeyer V, Feuerer M, Lapan AD, Stroud JC, Bates DL, Guo L, Han A, Ziegler SF, Mathis D, Benoist C, Chen L, Rao A, Cell. 2006 Jul 28;126(2):375-87. PMID:16873067
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