2f0x

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(Difference between revisions)

Revision as of 14:24, 24 December 2014

Crystal structure and function of human thioesterase superfamily member 2(THEM2)

Structural highlights

2f0x is a 8 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[THEM2_HUMAN] Acyl-CoA thioesterases are a group of enzymes that catalyze the hydrolysis of acyl-CoAs to the free fatty acid and coenzyme A (CoASH), providing the potential to regulate intracellular levels of acyl-CoAs, free fatty acids and CoASH. Has acyl-CoA thioesterase activity towards medium (C12) and long-chain (C18) fatty acyl-CoA substrates. Can also hydrolyze 3-hydroxyphenylacetyl-CoA and 3,4-dihydroxyphenylacetyl-CoA (in vitro). May play a role in controlling adaptive thermogenesis (By similarity).^[1] ^[2]

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 PubMed

Hotdog-fold has been identified in more than 1000 proteins, yet many of which in eukaryotes are less studied. No structural or functional studies of human thioesterase superfamily member 2 (hTHEM2) have been reported before. Since hTHEM2 exhibits about 20% sequence identity to Escherichia coli PaaI protein, it was proposed to be a thioesterase with a hotdog-fold. Here, we report the crystallographic structure of recombinant hTHEM2, determined by the single-wavelength anomalous dispersion method at 2.3A resolution. This structure demonstrates that hTHEM2 indeed contains a hotdog-fold and forms a back-to-back tetramer as other hotdog proteins. Based on structural and sequence conservation, the thioesterase active site in hTHEM2 is predicted. The structure and substrate specificity are most similar to those of the bacterial phenylacetyl-CoA hydrolase. Asp65, located on the central alpha-helix of subunit B, was shown by site-directed mutagenesis to be essential to catalysis.

Crystal structure of human thioesterase superfamily member 2.,Cheng Z, Song F, Shan X, Wei Z, Wang Y, Dunaway-Mariano D, Gong W Biochem Biophys Res Commun. 2006 Oct 13;349(1):172-7. Epub 2006 Aug 14. PMID:16934754^[3]

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

References

↑ Cheng Z, Song F, Shan X, Wei Z, Wang Y, Dunaway-Mariano D, Gong W. Crystal structure of human thioesterase superfamily member 2. Biochem Biophys Res Commun. 2006 Oct 13;349(1):172-7. Epub 2006 Aug 14. PMID:16934754 doi:10.1016/j.bbrc.2006.08.025
↑ Cao J, Xu H, Zhao H, Gong W, Dunaway-Mariano D. The mechanisms of human hotdog-fold thioesterase 2 (hTHEM2) substrate recognition and catalysis illuminated by a structure and function based analysis. Biochemistry. 2009 Feb 17;48(6):1293-304. PMID:19170545 doi:10.1021/bi801879z
↑ Cheng Z, Song F, Shan X, Wei Z, Wang Y, Dunaway-Mariano D, Gong W. Crystal structure of human thioesterase superfamily member 2. Biochem Biophys Res Commun. 2006 Oct 13;349(1):172-7. Epub 2006 Aug 14. PMID:16934754 doi:10.1016/j.bbrc.2006.08.025

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2f0x"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2f0x]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F0X OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2F0X FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
-<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
+<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></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=2f0x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f0x OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2f0x RCSB], [http://www.ebi.ac.uk/pdbsum/2f0x PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2f0x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f0x OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2f0x RCSB], [http://www.ebi.ac.uk/pdbsum/2f0x PDBsum]</span></td></tr>
-<table>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/THEM2_HUMAN THEM2_HUMAN]] Acyl-CoA thioesterases are a group of enzymes that catalyze the hydrolysis of acyl-CoAs to the free fatty acid and coenzyme A (CoASH), providing the potential to regulate intracellular levels of acyl-CoAs, free fatty acids and CoASH. Has acyl-CoA thioesterase activity towards medium (C12) and long-chain (C18) fatty acyl-CoA substrates. Can also hydrolyze 3-hydroxyphenylacetyl-CoA and 3,4-dihydroxyphenylacetyl-CoA (in vitro). May play a role in controlling adaptive thermogenesis (By similarity).<ref>PMID:16934754</ref> <ref>PMID:19170545</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 30: / Line 32: @@
 </StructureSection>
 [[Category: Homo sapiens]]
-[[Category: Cheng, Z.]]
+[[Category: Cheng, Z]]
-[[Category: Gong, W.]]
+[[Category: Gong, W]]
-[[Category: Shan, X.]]
+[[Category: Shan, X]]
-[[Category: Song, F.]]
+[[Category: Song, F]]
-[[Category: Wang, Y.]]
+[[Category: Wang, Y]]
-[[Category: Wei, Z.]]
+[[Category: Wei, Z]]
 [[Category: Hot dog fold]]
 [[Category: Hydrolase]]

2f0x

From Proteopedia

Revision as of 14:24, 24 December 2014

Crystal structure and function of human thioesterase superfamily member 2(THEM2)

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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