3c3w
From Proteopedia
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==Crystal Structure of the Mycobacterium tuberculosis Hypoxic Response Regulator DosR== | ==Crystal Structure of the Mycobacterium tuberculosis Hypoxic Response Regulator DosR== | ||
| - | <StructureSection load='3c3w' size='340' side='right' caption='[[3c3w]], [[Resolution|resolution]] 2.20Å' scene=''> | + | <StructureSection load='3c3w' size='340' side='right'caption='[[3c3w]], [[Resolution|resolution]] 2.20Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[3c3w]] is a 2 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[3c3w]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3C3W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3C3W FirstGlance]. <br> |
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</td></tr> |
| - | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | |
| - | <tr id=' | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3c3w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3c3w OCA], [https://pdbe.org/3c3w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3c3w RCSB], [https://www.ebi.ac.uk/pdbsum/3c3w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3c3w ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [ | + | [https://www.uniprot.org/uniprot/DEVR_MYCTU DEVR_MYCTU] Member of the two-component regulatory system DevR/DevS (also called DosR/DosS) involved in onset of the dormancy response (PubMed:15033981). Regulates an approximately 48-member regulon (PubMed:12953092, PubMed:11416222, PubMed:15033981, PubMed:18400743). When phosphorylated binds and activates the promoter of DevR regulon genes in response to hypoxia (PubMed:18359816, PubMed:21764934, PubMed:28977726). The presence of target DNA increases stability of phospho-DevR in vitro (PubMed:28977726). Activates its own transcription under hypoxic but not aerobic conditions, probably binds as a dimer to tandem binding sites within the devR and hspX promoters (PubMed:18359816). Accepts a phosphate group from DevS (DosS) and from DosT (PubMed:15033981, PubMed:15073296, PubMed:21764934, PubMed:28977726). Does not regulate transcription of dosT (PubMed:19487478).<ref>PMID:11416222</ref> <ref>PMID:12953092</ref> <ref>PMID:15033981</ref> <ref>PMID:15073296</ref> <ref>PMID:18359816</ref> <ref>PMID:18400743</ref> <ref>PMID:19487478</ref> <ref>PMID:21764934</ref> <ref>PMID:28977726</ref> |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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</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=3c3w 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=3c3w ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | The response regulator DosR is essential for promoting long-term survival of Mycobacterium tuberculosis under low oxygen conditions in a dormant state and may be responsible for latent tuberculosis in one-third of the world's population. Here, we report crystal structures of full-length unphosphorylated DosR at 2.2 A resolution and its C-terminal DNA-binding domain at 1.7 A resolution. The full-length DosR structure reveals several features never seen before in other response regulators. The N-terminal domain of the full-length DosR structure has an unexpected (beta alpha)(4) topology instead of the canonical (beta alpha)(5) fold observed in other response regulators. The linker region adopts a unique conformation that contains two helices forming a four-helix bundle with two helices from another subunit, resulting in dimer formation. The C-terminal domain in the full-length DosR structure displays a novel location of helix alpha 10, which allows Gln199 to interact with the catalytic Asp54 residue of the N-terminal domain. In contrast, the structure of the DosR C-terminal domain alone displays a remarkable unstructured conformation for helix alpha 10 residues, different from the well-defined helical conformations in all other known structures, indicating considerable flexibility within the C-terminal domain. Our structures suggest a mode of DosR activation by phosphorylation via a helix rearrangement mechanism. | ||
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| - | Crystal structures of the response regulator DosR from Mycobacterium tuberculosis suggest a helix rearrangement mechanism for phosphorylation activation.,Wisedchaisri G, Wu M, Sherman DR, Hol WG J Mol Biol. 2008 Apr 18;378(1):227-42. Epub 2008 Feb 26. PMID:18353359<ref>PMID:18353359</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 3c3w" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
| - | *[[Response regulator|Response regulator]] | + | *[[Response regulator 3D structure|Response regulator 3D structure]] |
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Large Structures]] |
| - | [[Category: | + | [[Category: Mycobacterium tuberculosis]] |
| - | [[Category: | + | [[Category: Hol WGJ]] |
| - | [[Category: | + | [[Category: Sherman DR]] |
| - | [[Category: | + | [[Category: Wisedchaisri G]] |
| - | [[Category: | + | [[Category: Wu M]] |
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Current revision
Crystal Structure of the Mycobacterium tuberculosis Hypoxic Response Regulator DosR
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