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[[Image:3bf7.jpg|left|200px]]<br /><applet load="3bf7" size="350" color="white" frame="true" align="right" spinBox="true"
caption="3bf7, resolution 1.1&Aring;" />
'''1.1 resolution structure of ybfF, a new esterase from Escherichia coli: a unique substrate-binding crevice generated by domain arrangement'''<br />


==Overview==
==1.1 resolution structure of ybfF, a new esterase from Escherichia coli: a unique substrate-binding crevice generated by domain arrangement==
Esterases are one of the most common enzymes and are involved in diverse cellular functions. ybfF protein from Escherichia coli (Ec_ybfF) belongs to the esterase family for the large substrates, palmitoyl coenzyme A and malonyl coenzyme A, which are important cellular intermediates for energy conversion and biomolecular synthesis. To obtain molecular information on ybfF esterase, which is found in a wide range of microorganisms, we elucidated the crystal structures of Ec_ybfF in complexes with small molecules at resolutions of 1.1 and 1.68 A, respectively. The structure of Ec_ybfF is composed of a globular alpha/beta hydrolase domain with a three-helical bundle cap, which is linked by a kinked helix to the alpha/beta hydrolase domain. It contains a catalytic tetrad of Ser-His-Asp-Ser with the first Ser acting as a nucleophile. The unique spatial arrangement and orientation of the helical cap with respect to the alpha/beta hydrolase domain form a substrate-binding crevice for large substrates. The helical cap is also directly involved in catalysis by providing a substrate anchor, viz., the conserved residues of Arg123 and Tyr208. The high-resolution structure of Ec_ybfF shows that the inserted helical bundle structure and its spatial orientation with respect to the alpha/beta hydrolase domain are critical for creating a large inner space and constituting a specific active site, thereby providing the broad substrate spectrum toward large biomolecules.
<StructureSection load='3bf7' size='340' side='right'caption='[[3bf7]], [[Resolution|resolution]] 1.10&Aring;' scene=''>
 
== Structural highlights ==
==About this Structure==
<table><tr><td colspan='2'>[[3bf7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BF7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BF7 FirstGlance]. <br>
3BF7 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BF7 OCA].  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.1&#8491;</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=3bf7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bf7 OCA], [https://pdbe.org/3bf7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3bf7 RCSB], [https://www.ebi.ac.uk/pdbsum/3bf7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3bf7 ProSAT]</span></td></tr>
==Reference==
</table>
High-resolution structure of ybfF from Escherichia coli K12: a unique substrate-binding crevice generated by domain arrangement., Park SY, Lee SH, Lee J, Nishi K, Kim YS, Jung CH, Kim JS, J Mol Biol. 2008 Mar 7;376(5):1426-37. Epub 2008 Jan 4. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=18215690 18215690]
== Function ==
[https://www.uniprot.org/uniprot/YBFF_ECOLI YBFF_ECOLI] Displays esterase activity toward palmitoyl-CoA, malonyl-CoA and pNP-butyrate.<ref>PMID:15808744</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bf/3bf7_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=3bf7 ConSurf].
<div style="clear:both"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Kim, J S.]]
[[Category: Kim JS]]
[[Category: Park, S K.]]
[[Category: Park SK]]
[[Category: esterase]]
[[Category: helical cap]]
[[Category: hydrolase]]
[[Category: thioesterase]]
[[Category: ybff]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri Mar 14 09:44:00 2008''

Latest revision as of 14:03, 13 March 2024

1.1 resolution structure of ybfF, a new esterase from Escherichia coli: a unique substrate-binding crevice generated by domain arrangement

3bf7, resolution 1.10Å

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