View source for 3vek


==Both Zn Fingers of GATA1 Bound to Palindromic DNA Recognition Site, P1 Crystal Form==
<StructureSection load='3vek' size='340' side='right'caption='[[3vek]], [[Resolution|resolution]] 2.63&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3vek]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3VEK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3VEK FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.63&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3vek FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3vek OCA], [https://pdbe.org/3vek PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3vek RCSB], [https://www.ebi.ac.uk/pdbsum/3vek PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3vek ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/GATA1_MOUSE GATA1_MOUSE] Transcriptional activator which probably serves as a general switch factor for erythroid development. It binds to DNA sites with the consensus sequence [AT]GATA[AG] within regulatory regions of globin genes and of other genes expressed in erythroid cells.<ref>PMID:2276623</ref> <ref>PMID:8206977</ref> <ref>PMID:8524811</ref> <ref>PMID:15173587</ref> <ref>PMID:16888089</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The transcription factor GATA1 helps regulate the expression of thousands of genes involved in blood development, by binding to single or double GATA sites on DNA. An important part of gene activation is chromatin looping, the bringing together of DNA elements that lie up to many thousands of basepairs apart in the genome. It was recently suggested, based on studies of the closely related protein GATA3, that GATA-mediated looping may involve interactions of each of two zinc fingers (ZF) with distantly spaced DNA elements. Here we present a structure of the GATA1 ZF region bound to pseudopalindromic double GATA site DNA, which is structurally equivalent to a recently-solved GATA3-DNA complex. However, extensive analysis of GATA1-DNA binding indicates that although the N-terminal ZF (NF) can modulate GATA1-DNA binding, under physiological conditions the NF binds DNA so poorly that it cannot play a direct role in DNA-looping. Rather, the ability of the NF to stabilize transcriptional complexes through protein-protein interactions, and thereby recruit looping factors such as Ldb1, provides a more compelling model for GATA-mediated looping.

GATA1 directly mediates interactions with closely spaced pseudopalindromic but not distantly spaced double GATA sites on DNA.,Wilkinson-White L, Lester KL, Ripin N, Jacques DA, Mitchell Guss J, Matthews JM Protein Sci. 2015 Oct;24(10):1649-59. doi: 10.1002/pro.2760. Epub 2015 Aug 20. PMID:26234528<ref>PMID:26234528</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3vek" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Synthetic construct]]
[[Category: Guss JM]]
[[Category: Jacques DA]]
[[Category: Matthews JM]]
[[Category: Ripin N]]
[[Category: Wilkinson-White LE]]