1t2n

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[[Image:1t2n.png|left|200px]]
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==Structure of a thermostable triple mutant of Bacillus subtilis lipase obtained through directed evolution==
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<StructureSection load='1t2n' size='340' side='right' caption='[[1t2n]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1t2n]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_globigii"_migula_1900 "bacillus globigii" migula 1900]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T2N OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1T2N FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1t4m|1t4m]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LIPA, LIP, BSU02700 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Bacillus globigii" Migula 1900])</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Triacylglycerol_lipase Triacylglycerol lipase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.3 3.1.1.3] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1t2n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t2n OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1t2n RCSB], [http://www.ebi.ac.uk/pdbsum/1t2n PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/t2/1t2n_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Variation in gene sequences generated by directed evolution approaches often does not assure a minimalist design for obtaining a desired property in proteins. While screening for enhanced thermostability, structural information was utilized in selecting mutations that are generated by error-prone PCR. By this approach we have increased the half-life of denaturation by 300-fold compared to the wild-type Bacillus subtilis lipase through three point mutations generated by only two cycles of error-prone PCR. At lower temperatures the activity parameters of the thermostable mutants are unaltered. High-resolution crystal structures of the mutants show subtle changes, which include stacking of tyrosine residues, peptide plane flipping and a better anchoring of the terminus, that challenge rational design and explain the structural basis for enhanced thermostability. The approach may offer an efficient and minimalist solution for the enhancement of a desired property of a protein.
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{{STRUCTURE_1t2n| PDB=1t2n | SCENE= }}
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Structural basis of selection and thermostability of laboratory evolved Bacillus subtilis lipase.,Acharya P, Rajakumara E, Sankaranarayanan R, Rao NM J Mol Biol. 2004 Aug 27;341(5):1271-81. PMID:15321721<ref>PMID:15321721</ref>
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===Structure of a thermostable triple mutant of Bacillus subtilis lipase obtained through directed evolution===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_15321721}}
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==About this Structure==
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[[1t2n]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T2N OCA].
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==See Also==
==See Also==
*[[Lipase|Lipase]]
*[[Lipase|Lipase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:015321721</ref><references group="xtra"/>
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__TOC__
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[[Category: Bacillus subtilis]]
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</StructureSection>
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[[Category: Bacillus globigii migula 1900]]
[[Category: Triacylglycerol lipase]]
[[Category: Triacylglycerol lipase]]
[[Category: Rajakumara, E.]]
[[Category: Rajakumara, E.]]

Revision as of 07:23, 10 September 2014

Structure of a thermostable triple mutant of Bacillus subtilis lipase obtained through directed evolution

1t2n, resolution 1.80Å

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