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==Structural basis of a rationally rewired protein-protein interface (HK853wt and RR468mutant V13P, L14I, I17M and N21V)==
<StructureSection load='4jav' size='340' side='right'caption='[[4jav]], [[Resolution|resolution]] 3.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4jav]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima_MSB8 Thermotoga maritima MSB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JAV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4JAV FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=BFD:ASPARTATE+BERYLLIUM+TRIFLUORIDE'>BFD</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=4jav FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jav OCA], [https://pdbe.org/4jav PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4jav RCSB], [https://www.ebi.ac.uk/pdbsum/4jav PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4jav ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q9WZV7_THEMA Q9WZV7_THEMA] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Two-component signal transduction systems typically involve a sensor histidine kinase that specifically phosphorylates a single, cognate response regulator. This protein-protein interaction relies on molecular recognition via a small set of residues in each protein. To better understand how these residues determine the specificity of kinase-substrate interactions, we rationally rewired the interaction interface of a Thermotoga maritima two-component system, HK853-RR468, to match that found in a different two-component system, Escherichia coli PhoR-PhoB. The rewired proteins interacted robustly with each other, but no longer interacted with the parent proteins. Analysis of the crystal structures of the wild-type and mutant protein complexes and a systematic mutagenesis study reveal how individual mutations contribute to the rewiring of interaction specificity. Our approach and conclusions have implications for studies of other protein-protein interactions and protein evolution and for the design of novel protein interfaces.

Structural Basis of a Rationally Rewired Protein-Protein Interface Critical to Bacterial Signaling.,Podgornaia AI, Casino P, Marina A, Laub MT Structure. 2013 Aug 13. pii: S0969-2126(13)00254-2. doi:, 10.1016/j.str.2013.07.005. PMID:23954504<ref>PMID:23954504</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4jav" style="background-color:#fffaf0;"></div>

==See Also==
*[[Response regulator 3D structure|Response regulator 3D structure]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Thermotoga maritima MSB8]]
[[Category: Casino P]]
[[Category: Laub MT]]
[[Category: Marina A]]
[[Category: Podgornaia AI]]