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==Crystal structure of a triple RFY mutant of human MTERF1 bound to the termination sequence==
==Crystal structure of a triple RFY mutant of human MTERF1 bound to the termination sequence==
<StructureSection load='3mvb' size='340' side='right' caption='[[3mvb]], [[Resolution|resolution]] 2.79&Aring;' scene=''>
<StructureSection load='3mvb' size='340' side='right'caption='[[3mvb]], [[Resolution|resolution]] 2.79&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3mvb]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MVB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3MVB FirstGlance]. <br>
<table><tr><td colspan='2'>[[3mvb]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MVB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3MVB FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3mva|3mva]]</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.786&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MTERF1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3mvb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mvb OCA], [https://pdbe.org/3mvb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3mvb RCSB], [https://www.ebi.ac.uk/pdbsum/3mvb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3mvb ProSAT]</span></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=3mvb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mvb OCA], [http://pdbe.org/3mvb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3mvb RCSB], [http://www.ebi.ac.uk/pdbsum/3mvb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3mvb ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/MTERF_HUMAN MTERF_HUMAN]] Transcription termination factor. Binds to a 28 bp region within the tRNA(Leu(uur)) gene at a position immediately adjacent to and downstream of the 16S rRNA gene; this region comprises a tridecamer sequence critical for directing accurate termination. Binds DNA along the major grove and promotes DNA bending and partial unwinding. Promotes base flipping. Probably requires one or more components for termination activity.<ref>PMID:20550934</ref>
[https://www.uniprot.org/uniprot/MTEF1_HUMAN MTEF1_HUMAN] Transcription termination factor. Binds to a 28 bp region within the tRNA(Leu(uur)) gene at a position immediately adjacent to and downstream of the 16S rRNA gene; this region comprises a tridecamer sequence critical for directing accurate termination. Binds DNA along the major grove and promotes DNA bending and partial unwinding. Promotes base flipping. Transcription termination activity appears to be polarized with highest specificity for transcripts initiated on the light strand.<ref>PMID:20550934</ref>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/mv/3mvb_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/mv/3mvb_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
Line 20: Line 19:
</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=3mvb ConSurf].
</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=3mvb ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Defects in mitochondrial gene expression are associated with aging and disease. Mterf proteins have been implicated in modulating transcription, replication and protein synthesis. We have solved the structure of a member of this family, the human mitochondrial transcriptional terminator MTERF1, bound to dsDNA containing the termination sequence. The structure indicates that upon sequence recognition MTERF1 unwinds the DNA molecule, promoting eversion of three nucleotides. Base flipping is critical for stable binding and transcriptional termination. Additional structural and biochemical results provide insight into the DNA binding mechanism and explain how MTERF1 recognizes its target sequence. Finally, we have demonstrated that the mitochondrial pathogenic G3249A and G3244A mutations interfere with key interactions for sequence recognition, eliminating termination. Our results provide insight into the role of mterf proteins and suggest a link between mitochondrial disease and the regulation of mitochondrial transcription.
Helix unwinding and base flipping enable human MTERF1 to terminate mitochondrial transcription.,Yakubovskaya E, Mejia E, Byrnes J, Hambardjieva E, Garcia-Diaz M Cell. 2010 Jun 11;141(6):982-93. PMID:20550934<ref>PMID:20550934</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3mvb" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Byrnes, J]]
[[Category: Large Structures]]
[[Category: Garcia-Diaz, M]]
[[Category: Byrnes J]]
[[Category: Hambardjieva, E]]
[[Category: Garcia-Diaz M]]
[[Category: Mejia, E]]
[[Category: Hambardjieva E]]
[[Category: Yakubovskaya, E]]
[[Category: Mejia E]]
[[Category: All alpha-helix]]
[[Category: Yakubovskaya E]]
[[Category: Mitochondria]]
[[Category: Protein-dna]]
[[Category: Termination]]
[[Category: Transcription factor]]
[[Category: Transcription-dna complex]]
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