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3f69
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==Crystal structure of the Mycobacterium tuberculosis PknB mutant kinase domain in complex with KT5720== | ==Crystal structure of the Mycobacterium tuberculosis PknB mutant kinase domain in complex with KT5720== | ||
| - | <StructureSection load='3f69' size='340' side='right' caption='[[3f69]], [[Resolution|resolution]] 2.80Å' scene=''> | + | <StructureSection load='3f69' size='340' side='right'caption='[[3f69]], [[Resolution|resolution]] 2.80Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[3f69]] is a 2 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[3f69]] 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=3F69 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3F69 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=XDR:HEXYL+(5S,6R,8R)-6-HYDROXY-5-METHYL-13-OXO-5,6,7,8-TETRAHYDRO-13H-5,8-EPOXY-4B,8A,14-TRIAZADIBENZO[B,H]CYCLOOCTA[1,2,3,4-JKL]CYCLOPENTA[E]-AS-INDACENE-6-CARBOXYLATE'>XDR</scene | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8Å</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>, <scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene>, <scene name='pdbligand=XDR:HEXYL+(5S,6R,8R)-6-HYDROXY-5-METHYL-13-OXO-5,6,7,8-TETRAHYDRO-13H-5,8-EPOXY-4B,8A,14-TRIAZADIBENZO[B,H]CYCLOOCTA[1,2,3,4-JKL]CYCLOPENTA[E]-AS-INDACENE-6-CARBOXYLATE'>XDR</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=3f69 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3f69 OCA], [https://pdbe.org/3f69 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3f69 RCSB], [https://www.ebi.ac.uk/pdbsum/3f69 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3f69 ProSAT]</span></td></tr> | |
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| - | <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/PKNB_MYCTU PKNB_MYCTU] Key component of a signal transduction pathway that regulates cell growth and cell division via phosphorylation of target proteins such as GarA, GlmU, PapA5, PbpA, FhaB (Rv0019c), FhaA (Rv0020c), MviN, PstP, EmbR, Rv1422, Rv1747 and RseA. Shows a strong preference for Thr versus Ser as the phosphoacceptor.<ref>PMID:15985609</ref> <ref>PMID:15978616</ref> <ref>PMID:15987910</ref> <ref>PMID:16817899</ref> <ref>PMID:16980473</ref> <ref>PMID:16436437</ref> <ref>PMID:19826007</ref> <ref>PMID:19121323</ref> <ref>PMID:20025669</ref> <ref>PMID:21423706</ref> <ref>PMID:22275220</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/f6/3f69_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/f6/3f69_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> | ||
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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=3f69 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=3f69 ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Many Ser/Thr protein kinases are activated by autophosphorylation, but the mechanism of this process has not been defined. We determined the crystal structure of a mutant of the Ser/Thr kinase domain (KD) of the mycobacterial sensor kinase PknB in complex with an ATP competitive inhibitor and discovered features consistent with an activation complex. The complex formed an asymmetric dimer, with the G helix and the ordered activation loop of one KD in contact with the G helix of the other. The activation loop of this putative 'substrate' KD was disordered, with the ends positioned at the entrance to the partner KD active site. Single amino-acid substitutions in the G-helix interface reduced activation-loop phosphorylation, and multiple replacements abolished KD phosphorylation and kinase activation. Phosphorylation of an inactive mutant KD was reduced by G-helix substitutions in both active and inactive KDs, as predicted by the idea that the asymmetric dimer mimics a trans-autophosphorylation complex. These results support a model in which a structurally and functionally asymmetric, 'front-to-front' association mediates autophosphorylation of PknB and homologous kinases. | ||
| - | + | ==See Also== | |
| - | + | *[[Serine/threonine protein kinase 3D structures|Serine/threonine protein kinase 3D structures]] | |
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== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Large Structures]] |
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[[Category: Mycobacterium tuberculosis]] | [[Category: Mycobacterium tuberculosis]] | ||
| - | [[Category: | + | [[Category: Alber T]] |
| - | [[Category: | + | [[Category: Mieczkowski CA]] |
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Current revision
Crystal structure of the Mycobacterium tuberculosis PknB mutant kinase domain in complex with KT5720
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