3dfx

<StructureSection load='3dfx' size='340' side='right' caption='[[3dfx]], [[Resolution|resolution]] 2.70&Aring;' scene=''>

<table><tr><td colspan='2'>[[3dfx]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DFX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3DFX FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3dfv|3dfv]]</td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Gata3, Gata-3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3dfx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3dfx OCA], [http://pdbe.org/3dfx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3dfx RCSB], [http://www.ebi.ac.uk/pdbsum/3dfx PDBsum]</span></td></tr>

[[http://www.uniprot.org/uniprot/GATA3_MOUSE GATA3_MOUSE]] Transcriptional activator which binds to the enhancer of the T-cell receptor alpha and delta genes. Binds to the consensus sequence 5'-AGATAG-3'.

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/df/3dfx_consurf.spt"</scriptWhenChecked>

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== Publication Abstract from PubMed ==

The GATA family of transcription factors (GATA1-6) binds selected GATA sites in vertebrate genomes to regulate specific gene expression. Although vertebrate GATA factors have two highly conserved zinc finger motifs, how the two fingers act together to recognize functional DNA elements is not well understood. Here we determined the crystal structures of the C-terminal zinc finger of mouse GATA3 bound to DNA containing two variously arranged GATA binding sites. Our structures and accompanying biochemical analyses reveal two distinct modes of DNA binding by GATA to closely arranged sites. One mode involves cooperative binding by two GATA factors that interact with each other through protein-protein interactions. The other involves simultaneous binding of the N-terminal zinc finger (N-finger) and the C-terminal zinc finger of the same GATA factor. Our studies represent the first crystallographic analysis of GATA zinc fingers bound to DNA and provide new insights into the DNA recognition mechanism by the GATA zinc finger. Our crystal structure also reveals a dimerization interface in GATA that has previously been shown to be important for GATA self-association. These findings significantly advance our understanding of the structure and function of GATA and provide an important framework for further investigating the in vivo mechanisms of GATA-dependent gene regulation.

Crystal structures of multiple GATA zinc fingers bound to DNA reveal new insights into DNA recognition and self-association by GATA.,Bates DL, Chen Y, Kim G, Guo L, Chen L J Mol Biol. 2008 Sep 19;381(5):1292-306. Epub 2008 Jul 2. PMID:18621058<ref>PMID:18621058</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 3dfx" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Lk3 transgenic mice]]

[[Category: Bates, D L]]

[[Category: Chen, L]]

[[Category: Guo, L]]

[[Category: Kim, G K]]

[[Category: Activator]]

[[Category: Zinc-finger]]