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1k68
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==Crystal Structure of the Phosphorylated Cyanobacterial Phytochrome Response Regulator RcpA== | ==Crystal Structure of the Phosphorylated Cyanobacterial Phytochrome Response Regulator RcpA== | ||
| - | <StructureSection load='1k68' size='340' side='right' caption='[[1k68]], [[Resolution|resolution]] 1.90Å' scene=''> | + | <StructureSection load='1k68' size='340' side='right'caption='[[1k68]], [[Resolution|resolution]] 1.90Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[1k68]] is a 2 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[1k68]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Tolypothrix_sp._PCC_7601 Tolypothrix sp. PCC 7601]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1K68 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1K68 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]] 1.9Å</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PHD:ASPARTYL+PHOSPHATE'>PHD</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=1k68 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k68 OCA], [https://pdbe.org/1k68 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1k68 RCSB], [https://www.ebi.ac.uk/pdbsum/1k68 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1k68 ProSAT]</span></td></tr> | |
| - | + | ||
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | |
</table> | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/Q8RTN0_9CYAN Q8RTN0_9CYAN] | ||
== 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/k6/1k68_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/k6/1k68_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=1k68 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=1k68 ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | The structures of two response regulators (RRs) from the cyanobacterium Calothrix PCC7601, RcpA and RcpB, were solved to 1.9- and 1.75-A resolution, respectively. RcpA was found in phosphorylated and RcpB in nonphosphorylated form. Both RRs are members of phytochrome-associated, light-sensing two-component signal transduction pathways, based on histidine kinase-mediated receptor autophosphorylation and phosphorelay to a RR. Despite the overall folding similarity to CheY-type RRs ((beta/alpha)(5)-motif), RcpA and RcpB form homodimers, irrespective of their phosphorylation state, giving insight into a signal transduction putatively different from that of other known RRs. Dimerization is accomplished by a C-terminal extension of the RR polypeptide chain, and the surface formed by H4, beta 5, and H5, which constitute a hydrophobic contact area with distinct interactions between residues of either subunit. Sequence alignments reveal that the identified dimerization motif is archetypal for phytochrome-associated RRs, making them a novel subgroup of CheY-type RRs. The protein structures of RcpA and RcpB are compared to the recently presented protein structure of Rcp1 from Synechocystis. | ||
| - | + | ==See Also== | |
| - | + | *[[Response regulator 3D structure|Response regulator 3D structure]] | |
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| - | == | + | |
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Large Structures]] |
| - | [[Category: | + | [[Category: Tolypothrix sp. PCC 7601]] |
| - | [[Category: | + | [[Category: Benda C]] |
| - | [[Category: | + | [[Category: Gaertner W]] |
| - | [[Category: Scheufler | + | [[Category: Scheufler C]] |
| - | [[Category: | + | [[Category: Tandeau de Marsac N]] |
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Current revision
Crystal Structure of the Phosphorylated Cyanobacterial Phytochrome Response Regulator RcpA
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