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==Crystal Structure of a Novel Engineered Retroaldolase: RA-22==
==Crystal Structure of a Novel Engineered Retroaldolase: RA-22==
<StructureSection load='3hoj' size='340' side='right' caption='[[3hoj]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
<StructureSection load='3hoj' size='340' side='right'caption='[[3hoj]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3hoj]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Synthetic_construct_sequences Synthetic construct sequences]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3b5v 3b5v]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3HOJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3HOJ FirstGlance]. <br>
<table><tr><td colspan='2'>[[3hoj]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3b5v 3b5v]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3HOJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3HOJ FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3b5l|3b5l]]</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]] 2.2&#8491;</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Indole-3-glycerol-phosphate_synthase Indole-3-glycerol-phosphate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.1.48 4.1.1.48] </span></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=3hoj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hoj OCA], [https://pdbe.org/3hoj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3hoj RCSB], [https://www.ebi.ac.uk/pdbsum/3hoj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3hoj ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3hoj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hoj OCA], [http://pdbe.org/3hoj PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3hoj RCSB], [http://www.ebi.ac.uk/pdbsum/3hoj PDBsum]</span></td></tr>
</table>
</table>
== Evolutionary Conservation ==
== Evolutionary Conservation ==
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Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ho/3hoj_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ho/3hoj_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=3hoj 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=3hoj ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The creation of enzymes capable of catalyzing any desired chemical reaction is a grand challenge for computational protein design. Using new algorithms that rely on hashing techniques to construct active sites for multistep reactions, we designed retro-aldolases that use four different catalytic motifs to catalyze the breaking of a carbon-carbon bond in a nonnatural substrate. Of the 72 designs that were experimentally characterized, 32, spanning a range of protein folds, had detectable retro-aldolase activity. Designs that used an explicit water molecule to mediate proton shuffling were significantly more successful, with rate accelerations of up to four orders of magnitude and multiple turnovers, than those involving charged side-chain networks. The atomic accuracy of the design process was confirmed by the x-ray crystal structure of active designs embedded in two protein scaffolds, both of which were nearly superimposable on the design model.
De novo computational design of retro-aldol enzymes.,Jiang L, Althoff EA, Clemente FR, Doyle L, Rothlisberger D, Zanghellini A, Gallaher JL, Betker JL, Tanaka F, Barbas CF 3rd, Hilvert D, Houk KN, Stoddard BL, Baker D Science. 2008 Mar 7;319(5868):1387-91. PMID:18323453<ref>PMID:18323453</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
==See Also==
</div>
*[[Aldolase 3D structures|Aldolase 3D structures]]
<div class="pdbe-citations 3hoj" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Indole-3-glycerol-phosphate synthase]]
[[Category: Large Structures]]
[[Category: Synthetic construct sequences]]
[[Category: Synthetic construct]]
[[Category: Doyle, L A]]
[[Category: Doyle LA]]
[[Category: Stoddard, B L]]
[[Category: Stoddard BL]]
[[Category: Engineered computationally designed]]
[[Category: Lyase]]
[[Category: Retroaldolase]]
[[Category: Tim barrel]]

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