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[[Image:1ig7.gif|left|200px]]


{{Structure
==Msx-1 Homeodomain/DNA Complex Structure==
|PDB= 1ig7 |SIZE=350|CAPTION= <scene name='initialview01'>1ig7</scene>, resolution 2.20&Aring;
<StructureSection load='1ig7' size='340' side='right'caption='[[1ig7]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=DA:2&#39;-DEOXYADENOSINE-5&#39;-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2&#39;-DEOXYCYTIDINE-5&#39;-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DG:2&#39;-DEOXYGUANOSINE-5&#39;-MONOPHOSPHATE'>DG</scene>, <scene name='pdbligand=DT:THYMIDINE-5&#39;-MONOPHOSPHATE'>DT</scene>
<table><tr><td colspan='2'>[[1ig7]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IG7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IG7 FirstGlance]. <br>
|ACTIVITY=
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
|GENE=
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ig7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ig7 OCA], [https://pdbe.org/1ig7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ig7 RCSB], [https://www.ebi.ac.uk/pdbsum/1ig7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ig7 ProSAT]</span></td></tr>
|DOMAIN=
</table>
|RELATEDENTRY=
== Function ==
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ig7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ig7 OCA], [http://www.ebi.ac.uk/pdbsum/1ig7 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1ig7 RCSB]</span>
[https://www.uniprot.org/uniprot/MSX1_MOUSE MSX1_MOUSE] Acts as a transcriptional repressor. May play a role in limb-pattern formation. Acts in cranofacial development and specifically in odontogenesis.<ref>PMID:1677742</ref> <ref>PMID:7823952</ref>
}}
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ig/1ig7_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1ig7 ConSurf].
<div style="clear:both"></div>


'''Msx-1 Homeodomain/DNA Complex Structure'''
==See Also==
 
*[[Hox protein|Hox protein]]
 
== References ==
==Overview==
<references/>
The Msx-1 homeodomain protein plays a crucial role in craniofacial, limb, and nervous system development. Homeodomain DNA-binding domains are comprised of 60 amino acids that show a high degree of evolutionary conservation. We have determined the structure of the Msx-1 homeodomain complexed to DNA at 2.2 A resolution. The structure has an unusually well-ordered N-terminal arm with a unique trajectory across the minor groove of the DNA. DNA specificity conferred by bases flanking the core TAAT sequence is explained by well ordered water-mediated interactions at Q50. Most interactions seen at the TAAT sequence are typical of the interactions seen in other homeodomain structures. Comparison of the Msx-1-HD structure to all other high resolution HD-DNA complex structures indicate a remarkably well-conserved sphere of hydration between the DNA and protein in these complexes.
__TOC__
 
</StructureSection>
==About this Structure==
[[Category: Large Structures]]
1IG7 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IG7 OCA].
 
==Reference==
Crystal structure of the Msx-1 homeodomain/DNA complex., Hovde S, Abate-Shen C, Geiger JH, Biochemistry. 2001 Oct 9;40(40):12013-21. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11580277 11580277]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
[[Category: Single protein]]
[[Category: Abate-Shen C]]
[[Category: Abate-Shen, C.]]
[[Category: Geiger JH]]
[[Category: Geiger, J H.]]
[[Category: Hovde S]]
[[Category: Hovde, S.]]
[[Category: helix-turn-helix]]
 
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