1tht: Difference between revisions

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[[Image:~~1tht~~.~~png~~|~~left~~|~~200px~~]]

==STRUCTURE OF A MYRISTOYL-ACP-SPECIFIC THIOESTERASE FROM VIBRIO HARVEYI==

== Structural highlights ==

<table><tr><td colspan='2'>[[1tht]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Vibrio_harveyi Vibrio harveyi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1THT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1THT FirstGlance]. <br>

</td></tr><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=1tht FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tht OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1tht RCSB], [http://www.ebi.ac.uk/pdbsum/1tht PDBsum]</span></td></tr>

<table>

== Evolutionary Conservation ==

[[Image:Consurf_key_small.gif|200px|right]]

Check<jmol>

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/th/1tht_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/chain_selection.php?pdb_ID=2ata ConSurf].

== Publication Abstract from PubMed ==

The crystal structure of a myristoyl acyl carrier protein specific thioesterase (C14ACP-TE) from a bioluminescent bacterium, Vibrio harveyi, was solved by multiple isomorphous replacement methods and refined to an R factor of 22% at 2.1-A resolution. This is the first elucidation of a three-dimensional structure of a thioesterase. The overall tertiary architecture of the enzyme resembles closely the consensus fold of the rapidly expanding superfamily of alpha/beta hydrolases, although there is no detectable homology with any of its members at the amino acid sequence level. Particularly striking similarity exists between the C14ACP-TE structure and that of haloalkane dehalogenase from Xanthobacter autotrophicus. Contrary to the conclusions of earlier studies [Ferri, S. R., & Meighen, E. A. (1991) J. Biol. Chem. 266, 12852-12857] which implicated Ser77 in catalysis, the crystal structure of C14ACP-TE reveals a lipase-like catalytic triad made up of Ser114, His241, and Asp211. Surprisingly, the gamma-turn with Ser114 in a strained secondary conformation (phi = 53 degrees, psi = -127 degrees), characteristic of the so-called nucleophilic elbow, does not conform to the frequently invoked lipase/esterase consensus sequence (Gly-X-Ser-X-Gly), as the positions of both glycines are occupied by larger amino acids. Site-directed mutagenesis and radioactive labeling support the catalytic function of Ser114. Crystallographic analysis of the Ser77-->Gly mutant at 2.5-A resolution revealed no structural changes; in both cases the loop containing the residue in position 77 is disordered.(ABSTRACT TRUNCATED AT 250 WORDS)

~~{{STRUCTURE_1tht| PDB=1tht | SCENE= }}~~

Structure of a myristoyl-ACP-specific thioesterase from Vibrio harveyi.,Lawson DM, Derewenda U, Serre L, Ferri S, Szittner R, Wei Y, Meighen EA, Derewenda ZS Biochemistry. 1994 Aug 16;33(32):9382-8. PMID:8068614<ref>PMID:8068614</ref>

~~===STRUCTURE OF A MYRISTOYL-ACP-SPECIFIC THIOESTERASE FROM VIBRIO HARVEYI===~~

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>

</div>

~~{{ABSTRACT_PUBMED_8068614}}~~

~~==About this Structure==~~

~~[[1tht]] is~~ a ~~2 chain structure with sequence from [http://en.wikipedia~~.~~org/wiki/Vibrio_harveyi Vibrio harveyi]~~. ~~Full crystallographic information is available from [http://oca~~.~~weizmann.ac.il/oca-bin~~/~~ocashort?id=1THT OCA].~~

==See Also==

*[[Thioesterase|Thioesterase]]

== References ==

==~~Reference~~==

<~~ref group="xtra">PMID:008068614<~~/~~ref~~><~~references group="xtra"~~/>

__TOC__

</StructureSection>

[[Category: Vibrio harveyi]]

[[Category: Derewenda, U.]]

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@@ Line 1: / Line 1: @@
-[[Image:1tht.png|left|200px]]
+==STRUCTURE OF A MYRISTOYL-ACP-SPECIFIC THIOESTERASE FROM VIBRIO HARVEYI==
+<StructureSection load='1tht' size='340' side='right' caption='[[1tht]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1tht]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Vibrio_harveyi Vibrio harveyi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1THT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1THT FirstGlance]. <br>
+</td></tr><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=1tht FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tht OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1tht RCSB], [http://www.ebi.ac.uk/pdbsum/1tht PDBsum]</span></td></tr>
+<table>
+== 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/th/1tht_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/chain_selection.php?pdb_ID=2ata ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The crystal structure of a myristoyl acyl carrier protein specific thioesterase (C14ACP-TE) from a bioluminescent bacterium, Vibrio harveyi, was solved by multiple isomorphous replacement methods and refined to an R factor of 22% at 2.1-A resolution. This is the first elucidation of a three-dimensional structure of a thioesterase. The overall tertiary architecture of the enzyme resembles closely the consensus fold of the rapidly expanding superfamily of alpha/beta hydrolases, although there is no detectable homology with any of its members at the amino acid sequence level. Particularly striking similarity exists between the C14ACP-TE structure and that of haloalkane dehalogenase from Xanthobacter autotrophicus. Contrary to the conclusions of earlier studies [Ferri, S. R., &amp; Meighen, E. A. (1991) J. Biol. Chem. 266, 12852-12857] which implicated Ser77 in catalysis, the crystal structure of C14ACP-TE reveals a lipase-like catalytic triad made up of Ser114, His241, and Asp211. Surprisingly, the gamma-turn with Ser114 in a strained secondary conformation (phi = 53 degrees, psi = -127 degrees), characteristic of the so-called nucleophilic elbow, does not conform to the frequently invoked lipase/esterase consensus sequence (Gly-X-Ser-X-Gly), as the positions of both glycines are occupied by larger amino acids. Site-directed mutagenesis and radioactive labeling support the catalytic function of Ser114. Crystallographic analysis of the Ser77--&gt;Gly mutant at 2.5-A resolution revealed no structural changes; in both cases the loop containing the residue in position 77 is disordered.(ABSTRACT TRUNCATED AT 250 WORDS)
-{{STRUCTURE_1tht|  PDB=1tht  |  SCENE=  }}
+Structure of a myristoyl-ACP-specific thioesterase from Vibrio harveyi.,Lawson DM, Derewenda U, Serre L, Ferri S, Szittner R, Wei Y, Meighen EA, Derewenda ZS Biochemistry. 1994 Aug 16;33(32):9382-8. PMID:8068614<ref>PMID:8068614</ref>
-===STRUCTURE OF A MYRISTOYL-ACP-SPECIFIC THIOESTERASE FROM VIBRIO HARVEYI===
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-{{ABSTRACT_PUBMED_8068614}}
-==About this Structure==
-[[1tht]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Vibrio_harveyi Vibrio harveyi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1THT OCA].
 ==See Also==
 *[[Thioesterase|Thioesterase]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:008068614</ref><references group="xtra"/>
+__TOC__
+</StructureSection>
 [[Category: Vibrio harveyi]]
 [[Category: Derewenda, U.]]