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== | ==Solution structure of TM1442, a putative anti sigma factor antagonist in phosphorylated state== | ||
<StructureSection load='1t6r' size='340' side='right'caption='[[1t6r]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1t6r]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T6R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1T6R FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 20 models</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</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=1t6r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t6r OCA], [https://pdbe.org/1t6r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1t6r RCSB], [https://www.ebi.ac.uk/pdbsum/1t6r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1t6r ProSAT], [https://www.topsan.org/Proteins/JCSG/1t6r TOPSAN]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Y1442_THEMA Y1442_THEMA] In the phosphorylated form it could act as an anti-anti-sigma factor that counteracts an anti-sigma factor and thus releases a sigma factor from inhibition (By similarity). | |||
== 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/t6/1t6r_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1t6r ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The NMR structures of the unphosphorylated Thermotoga maritima protein TM1442 at pH 4.8 and of the phosphorylated TM1442 (TM1442-P) at pH 7.0 are presented, and a functional interaction of TM1442 with TM0733 is characterized. Although the NMR spectra of TM1442-P at pH 7.0 are of high quality, detailed NMR studies of unphosphorylated TM1442 could be performed only at slightly acidic pH values and high salt concentration. TM1442 is a putative anti-sigma-factor antagonist related to the sigmaF and sigmaB regulation systems in Bacillus subtilis, which is the component in this system that can be phosphorylated. The kinase TM0733, which shows sequence similarity to the GHKL ATPase/kinase superfamily, was identified as the possible anti-sigma-factor of TM1442 using a bioinformatics analysis. Phosphorylation of TM1442 by TM0733 was confirmed by NMR, mass spectroscopy and native gel electrophoresis, and Ser59 was identified as the phosphorylation site using site-directed mutational analysis. The solution structure of TM1442-P at pH 7.0 has the same global fold as free TM1442 at pH 4.8, with an alpha/beta topology consisting of a central four-stranded beta sheet and three alpha helices, but the regular secondary structure elements wrapping the hydrophobic core of the protein undergo subtle conformational changes upon phosphorylation. | The NMR structures of the unphosphorylated Thermotoga maritima protein TM1442 at pH 4.8 and of the phosphorylated TM1442 (TM1442-P) at pH 7.0 are presented, and a functional interaction of TM1442 with TM0733 is characterized. Although the NMR spectra of TM1442-P at pH 7.0 are of high quality, detailed NMR studies of unphosphorylated TM1442 could be performed only at slightly acidic pH values and high salt concentration. TM1442 is a putative anti-sigma-factor antagonist related to the sigmaF and sigmaB regulation systems in Bacillus subtilis, which is the component in this system that can be phosphorylated. The kinase TM0733, which shows sequence similarity to the GHKL ATPase/kinase superfamily, was identified as the possible anti-sigma-factor of TM1442 using a bioinformatics analysis. Phosphorylation of TM1442 by TM0733 was confirmed by NMR, mass spectroscopy and native gel electrophoresis, and Ser59 was identified as the phosphorylation site using site-directed mutational analysis. The solution structure of TM1442-P at pH 7.0 has the same global fold as free TM1442 at pH 4.8, with an alpha/beta topology consisting of a central four-stranded beta sheet and three alpha helices, but the regular secondary structure elements wrapping the hydrophobic core of the protein undergo subtle conformational changes upon phosphorylation. | ||
Solution structures of the putative anti-sigma-factor antagonist TM1442 from Thermotoga maritima in the free and phosphorylated states.,Etezady-Esfarjani T, Placzek WJ, Herrmann T, Wuthrich K Magn Reson Chem. 2006 Jul;44 Spec No:S61-70. PMID:16826544<ref>PMID:16826544</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
[[Category: | <div class="pdbe-citations 1t6r" style="background-color:#fffaf0;"></div> | ||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Thermotoga maritima]] | [[Category: Thermotoga maritima]] | ||
[[Category: Etezady-Esfarjani | [[Category: Etezady-Esfarjani T]] | ||
[[Category: Herrmann | [[Category: Herrmann T]] | ||
[[Category: Lesley SA]] | |||
[[Category: Lesley | [[Category: Placzek W]] | ||
[[Category: Placzek | [[Category: Wuthrich K]] | ||
[[Category: Wuthrich | |||
Latest revision as of 10:27, 30 October 2024
Solution structure of TM1442, a putative anti sigma factor antagonist in phosphorylated stateSolution structure of TM1442, a putative anti sigma factor antagonist in phosphorylated state
Structural highlights
FunctionY1442_THEMA In the phosphorylated form it could act as an anti-anti-sigma factor that counteracts an anti-sigma factor and thus releases a sigma factor from inhibition (By similarity). Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe NMR structures of the unphosphorylated Thermotoga maritima protein TM1442 at pH 4.8 and of the phosphorylated TM1442 (TM1442-P) at pH 7.0 are presented, and a functional interaction of TM1442 with TM0733 is characterized. Although the NMR spectra of TM1442-P at pH 7.0 are of high quality, detailed NMR studies of unphosphorylated TM1442 could be performed only at slightly acidic pH values and high salt concentration. TM1442 is a putative anti-sigma-factor antagonist related to the sigmaF and sigmaB regulation systems in Bacillus subtilis, which is the component in this system that can be phosphorylated. The kinase TM0733, which shows sequence similarity to the GHKL ATPase/kinase superfamily, was identified as the possible anti-sigma-factor of TM1442 using a bioinformatics analysis. Phosphorylation of TM1442 by TM0733 was confirmed by NMR, mass spectroscopy and native gel electrophoresis, and Ser59 was identified as the phosphorylation site using site-directed mutational analysis. The solution structure of TM1442-P at pH 7.0 has the same global fold as free TM1442 at pH 4.8, with an alpha/beta topology consisting of a central four-stranded beta sheet and three alpha helices, but the regular secondary structure elements wrapping the hydrophobic core of the protein undergo subtle conformational changes upon phosphorylation. Solution structures of the putative anti-sigma-factor antagonist TM1442 from Thermotoga maritima in the free and phosphorylated states.,Etezady-Esfarjani T, Placzek WJ, Herrmann T, Wuthrich K Magn Reson Chem. 2006 Jul;44 Spec No:S61-70. PMID:16826544[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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