1psu

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{{STRUCTURE_1psu| PDB=1psu | SCENE= }}
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==Structure of the E. coli PaaI protein from the phyenylacetic acid degradation operon==
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===Structure of the E. coli PaaI protein from the phyenylacetic acid degradation operon===
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<StructureSection load='1psu' size='340' side='right' caption='[[1psu]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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{{ABSTRACT_PUBMED_16464851}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1psu]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PSU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1PSU FirstGlance]. <br>
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</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>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PAAI ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</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=1psu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1psu OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1psu RCSB], [http://www.ebi.ac.uk/pdbsum/1psu PDBsum], [http://www.topsan.org/Proteins/NYSGXRC/1psu TOPSAN]</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/ps/1psu_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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The structure and biochemical function of the hot dog-fold thioesterase PaaI operative in the aerobic phenylacetate degradation pathway are examined. PaaI showed modest activity with phenylacetyl-coenzyme A, suggestive of a role in coenzyme A release from this pathway intermediate in the event of limiting downstream pathway enzymes. Minimal activity was observed with aliphatic acyl-coenzyme A thioesters, which ruled out PaaI function in the lower phenylacetate pathway. PaaI was most active with ring-hydroxylated phenylacetyl-coenzyme A thioesters. The x-ray crystal structure of the Escherichia coli thioesterase is reported and analyzed to define the structural basis of substrate recognition and catalysis. The contributions of catalytic and substrate binding residues, thus, identified were examined through steady-state kinetic analysis of site-directed mutant proteins.
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==Function==
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Structure, function, and mechanism of the phenylacetate pathway hot dog-fold thioesterase PaaI.,Song F, Zhuang Z, Finci L, Dunaway-Mariano D, Kniewel R, Buglino JA, Solorzano V, Wu J, Lima CD J Biol Chem. 2006 Apr 21;281(16):11028-38. Epub 2006 Feb 7. PMID:16464851<ref>PMID:16464851</ref>
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[[http://www.uniprot.org/uniprot/PAAI_ECOLI PAAI_ECOLI]] Thioesterase with a preference for ring-hydroxylated phenylacetyl-CoA esters. Hydrolyzes 3,4-dihydroxyphenylacetyl-CoA, 3-hydroxyphenylacetyl-CoA and 4-hydroxyphenylacetyl-CoA. Inactive towards 4-hydroxybenzoyl-CoA and 4-hydroxyphenacyl-CoA.<ref>PMID:9748275</ref> <ref>PMID:16464851</ref>
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[1psu]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PSU OCA].
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</div>
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:016464851</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Bacillus coli migula 1895]]
[[Category: Bacillus coli migula 1895]]
[[Category: Buglino, J.]]
[[Category: Buglino, J.]]

Revision as of 10:59, 3 October 2014

Structure of the E. coli PaaI protein from the phyenylacetic acid degradation operon

1psu, resolution 2.20Å

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