1ku0: Difference between revisions
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==Structure of the Bacillus stearothermophilus L1 lipase== | ==Structure of the Bacillus stearothermophilus L1 lipase== | ||
<StructureSection load='1ku0' size='340' side='right' caption='[[1ku0]], [[Resolution|resolution]] 2.00Å' scene=''> | <StructureSection load='1ku0' size='340' side='right'caption='[[1ku0]], [[Resolution|resolution]] 2.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1ku0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_12980 Atcc 12980]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KU0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KU0 FirstGlance]. <br> | <table><tr><td colspan='2'>[[1ku0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_12980 Atcc 12980]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KU0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KU0 FirstGlance]. <br> | ||
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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/ku/1ku0_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ku/1ku0_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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</div> | </div> | ||
<div class="pdbe-citations 1ku0" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 1ku0" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Lipase|Lipase]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Atcc 12980]] | [[Category: Atcc 12980]] | ||
[[Category: Large Structures]] | |||
[[Category: Triacylglycerol lipase]] | [[Category: Triacylglycerol lipase]] | ||
[[Category: Chi, S W]] | [[Category: Chi, S W]] | ||
Revision as of 16:12, 17 July 2019
Structure of the Bacillus stearothermophilus L1 lipaseStructure of the Bacillus stearothermophilus L1 lipase
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe bacterial thermoalkalophilic lipases optimally hydrolyze saturated fatty acids at elevated temperatures. They also have significant sequence homology with staphylococcal lipases, and both the thermoalkalophilic and staphylococcal lipases are grouped as the lipase family I.5. We report here the first crystal structure of the lipase family I.5, the structure of a thermoalkalophilic lipase from Bacillus stearothermophilus L1 (L1 lipase) determined at 2.0-A resolution. The structure is in a closed conformation, and the active site is buried under a long lid helix. Unexpectedly, the structure exhibits a zinc-binding site in an extra domain that accounts for the larger molecular size of the family I.5 enzymes in comparison to other microbial lipases. The zinc-coordinated extra domain makes tight interactions with the loop extended from the C terminus of the lid helix, suggesting that the activation of the family I.5 lipases may be regulated by the strength of the interactions. The unusually long lid helix makes strong hydrophobic interactions with its neighbors. The structural information together with previous biochemical observations indicate that the temperature-mediated lid opening is triggered by the thermal dissociation of the hydrophobic interactions. Novel zinc-binding center and a temperature switch in the Bacillus stearothermophilus L1 lipase.,Jeong ST, Kim HK, Kim SJ, Chi SW, Pan JG, Oh TK, Ryu SE J Biol Chem. 2002 May 10;277(19):17041-7. Epub 2002 Feb 21. PMID:11859083[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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