3nyd: Difference between revisions
No edit summary |
No edit summary |
||
| (5 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
< | ==Crystal Structure of Kemp Eliminase HG-2 Complexed with Transition State Analog 5-Nitro Benzotriazole== | ||
<StructureSection load='3nyd' size='340' side='right'caption='[[3nyd]], [[Resolution|resolution]] 1.23Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3nyd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermoascus_aurantiacus Thermoascus aurantiacus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NYD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3NYD 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]] 1.23Å</td></tr> | |||
-- | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=3NY:5-NITRO-1H-BENZOTRIAZOLE'>3NY</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</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=3nyd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3nyd OCA], [https://pdbe.org/3nyd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3nyd RCSB], [https://www.ebi.ac.uk/pdbsum/3nyd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3nyd ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/XYNA_THEAU XYNA_THEAU] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
A general approach for the computational design of enzymes to catalyze arbitrary reactions is a goal at the forefront of the field of protein design. Recently, computationally designed enzymes have been produced for three chemical reactions through the synthesis and screening of a large number of variants. Here, we present an iterative approach that has led to the development of the most catalytically efficient computationally designed enzyme for the Kemp elimination to date. Previously established computational techniques were used to generate an initial design, HG-1, which was catalytically inactive. Analysis of HG-1 with molecular dynamics simulations (MD) and X-ray crystallography indicated that the inactivity might be due to bound waters and high flexibility of residues within the active site. This analysis guided changes to our design procedure, moved the design deeper into the interior of the protein, and resulted in an active Kemp eliminase, HG-2. The cocrystal structure of this enzyme with a transition state analog (TSA) revealed that the TSA was bound in the active site, interacted with the intended catalytic base in a catalytically relevant manner, but was flipped relative to the design model. MD analysis of HG-2 led to an additional point mutation, HG-3, that produced a further threefold improvement in activity. This iterative approach to computational enzyme design, including detailed MD and structural analysis of both active and inactive designs, promises a more complete understanding of the underlying principles of enzymatic catalysis and furthers progress toward reliably producing active enzymes. | |||
Iterative approach to computational enzyme design.,Privett HK, Kiss G, Lee TM, Blomberg R, Chica RA, Thomas LM, Hilvert D, Houk KN, Mayo SL Proc Natl Acad Sci U S A. 2012 Mar 6;109(10):3790-5. Epub 2012 Feb 22. PMID:22357762<ref>PMID:22357762</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3nyd" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | [[Category: Large Structures]] | ||
== | |||
< | |||
[[Category: | |||
[[Category: Thermoascus aurantiacus]] | [[Category: Thermoascus aurantiacus]] | ||
[[Category: Kaiser | [[Category: Kaiser JT]] | ||
[[Category: Lee | [[Category: Lee TM]] | ||
[[Category: Mayo | [[Category: Mayo SL]] | ||
[[Category: Privett | [[Category: Privett HK]] | ||
Latest revision as of 12:29, 30 October 2024
Crystal Structure of Kemp Eliminase HG-2 Complexed with Transition State Analog 5-Nitro BenzotriazoleCrystal Structure of Kemp Eliminase HG-2 Complexed with Transition State Analog 5-Nitro Benzotriazole
Structural highlights
FunctionPublication Abstract from PubMedA general approach for the computational design of enzymes to catalyze arbitrary reactions is a goal at the forefront of the field of protein design. Recently, computationally designed enzymes have been produced for three chemical reactions through the synthesis and screening of a large number of variants. Here, we present an iterative approach that has led to the development of the most catalytically efficient computationally designed enzyme for the Kemp elimination to date. Previously established computational techniques were used to generate an initial design, HG-1, which was catalytically inactive. Analysis of HG-1 with molecular dynamics simulations (MD) and X-ray crystallography indicated that the inactivity might be due to bound waters and high flexibility of residues within the active site. This analysis guided changes to our design procedure, moved the design deeper into the interior of the protein, and resulted in an active Kemp eliminase, HG-2. The cocrystal structure of this enzyme with a transition state analog (TSA) revealed that the TSA was bound in the active site, interacted with the intended catalytic base in a catalytically relevant manner, but was flipped relative to the design model. MD analysis of HG-2 led to an additional point mutation, HG-3, that produced a further threefold improvement in activity. This iterative approach to computational enzyme design, including detailed MD and structural analysis of both active and inactive designs, promises a more complete understanding of the underlying principles of enzymatic catalysis and furthers progress toward reliably producing active enzymes. Iterative approach to computational enzyme design.,Privett HK, Kiss G, Lee TM, Blomberg R, Chica RA, Thomas LM, Hilvert D, Houk KN, Mayo SL Proc Natl Acad Sci U S A. 2012 Mar 6;109(10):3790-5. Epub 2012 Feb 22. PMID:22357762[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
|
| ||||||||||||||||||