1drk: Difference between revisions

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-[[Image:1drk.jpg|left|200px]]<br /><applet load="1drk" size="350" color="white" frame="true" align="right" spinBox="true"
-caption="1drk, resolution 2.0&Aring;" />
-'''PROBING PROTEIN-PROTEIN INTERACTIONS: THE RIBOSE-BINDING PROTEIN IN BACTERIAL TRANSPORT AND CHEMOTAXIS'''<br />
-==Overview==
+==PROBING PROTEIN-PROTEIN INTERACTIONS: THE RIBOSE-BINDING PROTEIN IN BACTERIAL TRANSPORT AND CHEMOTAXIS==
-A number of mutations at Gly134 of the periplasmic ribose-binding protein of Escherichia coli were examined by a combined biochemical and structural approach. Different mutations gave rise to different patterns of effects on the chemotaxis and transport functions. The smallest residue (alanine) had the least effect on transport, whereas large hydrophobic residues had the smallest effect on chemotaxis. Comparison of the x-ray crystal structure of the G134R mutant protein (2.5-A resolution) to that of the wild type (1.6-A resolution) showed that the basic structure of the protein was unaltered. The loss of chemotaxis and transport functions in this and similar mutant proteins must therefore be caused by relatively simple surface effects, which include a change in local main chain conformation. The loss of chemotaxis and transport functions resulting from the introduction of an alanine residue at position 134 was suppressed by an additional isoleucine to threonine mutation at residue 132. An x-ray structure of the I132T/G134A double mutant protein (2.2-A resolution) showed that the changes in local structure were accompanied by a diffuse pattern of structural changes in the surrounding region, implying that the suppression derives from a combination of sources.
+<StructureSection load='1drk' size='340' side='right'caption='[[1drk]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1drk]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DRK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DRK 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]] 2&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=RIP:RIBOSE(PYRANOSE+FORM)'>RIP</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=1drk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1drk OCA], [https://pdbe.org/1drk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1drk RCSB], [https://www.ebi.ac.uk/pdbsum/1drk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1drk ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/RBSB_ECOLI RBSB_ECOLI] Involved in the high-affinity D-ribose membrane transport system and also serves as the primary chemoreceptor for chemotaxis.
+== 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/dr/1drk_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1drk ConSurf].
+<div style="clear:both"></div>
-==About this Structure==
+==See Also==
-DRK is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=RIP:'>RIP</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DRK OCA].
+*[[Ribose-binding protein|Ribose-binding protein]]
+__TOC__
-==Reference==
+</StructureSection>
-Probing protein-protein interactions. The ribose-binding protein in bacterial transport and chemotaxis., Bjorkman AJ, Binnie RA, Zhang H, Cole LB, Hermodson MA, Mowbray SL, J Biol Chem. 1994 Dec 2;269(48):30206-11. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=7982928 7982928]
 [[Category: Escherichia coli]]
-[[Category: Single protein]]
+[[Category: Large Structures]]
-[[Category: Bjorkman, A J.]]
+[[Category: Bjorkman AJ]]
-[[Category: Mowbray, S L.]]
+[[Category: Mowbray SL]]
-[[Category: RIP]]
-[[Category: binding protein]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:19:44 2008''