4ean: Difference between revisions

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 == Structural highlights ==
 <table><tr><td colspan='2'>[[4ean]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharolobus_solfataricus_P2 Saccharolobus solfataricus P2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4EAN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4EAN FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IND:INDOLE'>IND</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.75&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IND:INDOLE'>IND</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</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=4ean FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ean OCA], [https://pdbe.org/4ean PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ean RCSB], [https://www.ebi.ac.uk/pdbsum/4ean PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ean ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/BGAL_SACS2 BGAL_SACS2]]
+[https://www.uniprot.org/uniprot/BGAL_SACS2 BGAL_SACS2]
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-Ligand-dependent activity has been engineered into enzymes for purposes ranging from controlling cell morphology to reprogramming cellular signaling pathways. Where these successes have typically fused a naturally allosteric domain to the enzyme of interest, here we instead demonstrate an approach for designing a de novo allosteric effector site directly into the catalytic domain of an enzyme. This approach is distinct from traditional chemical rescue of enzymes in that it relies on disruption and restoration of structure, rather than active site chemistry, as a means to achieve modulate function. We present two examples, W33G in a beta-glycosidase enzyme (beta-gly) and W492G in a beta-glucuronidase enzyme (beta-gluc), in which we engineer indole-dependent activity into enzymes by removing a buried tryptophan side chain that serves as a buttress for the active site architecture. In both cases, we observe a loss of function, and in both cases we find that the subsequent addition of indole can be used to restore activity. Through a detailed analysis of beta-gly W33G kinetics, we demonstrate that this rescued enzyme is fully functionally equivalent to the corresponding wild-type enzyme. We then present the apo and indole-bound crystal structures of beta-gly W33G, which together establish the structural basis for enzyme inactivation and rescue. Finally, we use this designed switch to modulate beta-glycosidase activity in living cells using indole. Disruption and recovery of protein structure may represent a general technique for introducing allosteric control into enzymes, and thus may serve as a starting point for building a variety of bioswitches and sensors.
-Designing Allosteric Control into Enzymes by Chemical Rescue of Structure.,Deckert K, Budiardjo SJ, Brunner LC, Lovell S, Karanicolas J J Am Chem Soc. 2012 Jun 11. PMID:22655749<ref>PMID:22655749</ref>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 4ean" style="background-color:#fffaf0;"></div>
 ==See Also==
 *[[Galactosidase 3D structures|Galactosidase 3D structures]]
-== References ==
-<references/>
 __TOC__
 </StructureSection>