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==THE STRUCTURE OF MFPA (RV3361C, P3221 CRYSTAL FORM). THE PENTAPEPTIDE REPEAT PROTEIN FROM MYCOBACTERIUM TUBERCULOSIS FOLDS AS A RIGHT-HANDED QUADRILATERAL BETA-HELIX.==
 
<StructureSection load='2bm7' size='340' side='right' caption='[[2bm7]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
==The Structure of MfpA (Rv3361c, P3221 Crystal form). The Pentapeptide Repeat Protein from Mycobacterium tuberculosis Folds as A Right- handed Quadrilateral Beta-helix.==
<StructureSection load='2bm7' size='340' side='right'caption='[[2bm7]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2bm7]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BM7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BM7 FirstGlance]. <br>
<table><tr><td colspan='2'>[[2bm7]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis_H37Rv Mycobacterium tuberculosis H37Rv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BM7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BM7 FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2bm4|2bm4]], [[2bm5|2bm5]], [[2bm6|2bm6]]</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]] 2.7&#8491;</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=2bm7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bm7 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2bm7 RCSB], [http://www.ebi.ac.uk/pdbsum/2bm7 PDBsum]</span></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=2bm7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bm7 OCA], [https://pdbe.org/2bm7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bm7 RCSB], [https://www.ebi.ac.uk/pdbsum/2bm7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bm7 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/O50390_MYCTO O50390_MYCTO]
== 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/bm/2bm7_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bm/2bm7_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>
   </jmolCheckbox>
   </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/chain_selection.php?pdb_ID=2ata 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=2bm7 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Fluoroquinolones are gaining increasing importance in the treatment of tuberculosis. The expression of MfpA, a member of the pentapeptide repeat family of proteins from Mycobacterium tuberculosis, causes resistance to ciprofloxacin and sparfloxacin. This protein binds to DNA gyrase and inhibits its activity. Its three-dimensional structure reveals a fold, which we have named the right-handed quadrilateral beta helix, that exhibits size, shape, and electrostatic similarity to B-form DNA. This represents a form of DNA mimicry and explains both its inhibitory effect on DNA gyrase and fluoroquinolone resistance resulting from the protein's expression in vivo.
A fluoroquinolone resistance protein from Mycobacterium tuberculosis that mimics DNA.,Hegde SS, Vetting MW, Roderick SL, Mitchenall LA, Maxwell A, Takiff HE, Blanchard JS Science. 2005 Jun 3;308(5727):1480-3. PMID:15933203<ref>PMID:15933203</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Mycobacterium tuberculosis]]
[[Category: Large Structures]]
[[Category: Blanchard, J S]]
[[Category: Mycobacterium tuberculosis H37Rv]]
[[Category: Hegde, S S]]
[[Category: Blanchard JS]]
[[Category: Maxwell, A]]
[[Category: Hegde SS]]
[[Category: Mitchenall, L A]]
[[Category: Maxwell A]]
[[Category: Roderick, S L]]
[[Category: Mitchenall LA]]
[[Category: Takiff, H E]]
[[Category: Roderick SL]]
[[Category: Vetting, M W]]
[[Category: Takiff HE]]
[[Category: Dna gyrase]]
[[Category: Vetting MW]]
[[Category: Dna mimicry]]
[[Category: Fluroquinolone resistance]]
[[Category: Pentapeptide repeat protein]]
[[Category: Right-handed quadrilateral beta-helix]]

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