1iuq: Difference between revisions

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{{Seed}}
[[Image:1iuq.png|left|200px]]


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==The 1.55 A Crystal Structure of Glycerol-3-Phosphate Acyltransferase==
The line below this paragraph, containing "STRUCTURE_1iuq", creates the "Structure Box" on the page.
<StructureSection load='1iuq' size='340' side='right'caption='[[1iuq]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1iuq]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Cucurbita_moschata Cucurbita moschata]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IUQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IUQ FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.55&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
{{STRUCTURE_1iuq|  PDB=1iuq  |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1iuq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1iuq OCA], [https://pdbe.org/1iuq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1iuq RCSB], [https://www.ebi.ac.uk/pdbsum/1iuq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1iuq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/GPAT2_CUCMO GPAT2_CUCMO] Esterifies the acyl-group from acyl-acyl carrier proteins (acyl-ACPs) to the sn-1 position of glycerol-3-phosphate (Ref.3). The physiological acyl donors in chloroplasts are acyl-ACPs, but acyl-CoAs are used as artificial donor for in vitro reactions (Probable). The enzyme from chilling-resistant plants discriminates against non-fluid palmitic acid and selects oleic acid whereas the enzyme from sensitive plants accepts both fatty acids (Ref.3). Squash is chilling-sensitive (Probable). Does not seem to discriminate between the acyl-ACP thioesters 18:1-ACP, 18:0-ACP and 16:0-ACP (Ref.3). Exhibits higher selectivity for 16:0-CoA than 18:1-CoA in vitro (PubMed:14684887, PubMed:9016814).<ref>PMID:14684887</ref> <ref>PMID:9016814</ref> <ref>PMID:9016814</ref> <ref>PMID:9016814</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/iu/1iuq_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1iuq ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Stromal glycerol-3-phosphate acyltransferases (GPAT) are responsible for the selective incorporation of saturated and unsaturated fatty-acyl chains into chloroplast membranes, which is an important determinant of a plant's ability to tolerate chilling temperatures. The molecular mechanisms of plant chilling tolerance were elucidated by creating chimeric GPATs between squash (Cucurbita moscata, chilling-sensitive) and spinach (Spinacea oleracea, chilling-tolerant) and the results were interpreted using structural information on squash GPAT determined by X-ray crystallography at 1.55 A resolution. Enzymatic analysis of the chimeric GPATs showed that the chimeric GPATs containing the spinach region from residues 128 to 187 prefer the 18:1 unsaturated fatty acid rather than 16:0 saturated fatty acid. Structure analysis suggests that the size and character of the cavity that is formed from this region determines the specific recognition of acyl chains.


===The 1.55 A Crystal Structure of Glycerol-3-Phosphate Acyltransferase===
Substrate recognition and selectivity of plant glycerol-3-phosphate acyltransferases (GPATs) from Cucurbita moscata and Spinacea oleracea.,Tamada T, Feese MD, Ferri SR, Kato Y, Yajima R, Toguri T, Kuroki R Acta Crystallogr D Biol Crystallogr. 2004 Jan;60(Pt 1):13-21. Epub 2003, Dec 18. PMID:14684887<ref>PMID:14684887</ref>


 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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The line below this paragraph, {{ABSTRACT_PUBMED_14684887}}, adds the Publication Abstract to the page
<div class="pdbe-citations 1iuq" style="background-color:#fffaf0;"></div>
(as it appears on PubMed at http://www.pubmed.gov), where 14684887 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_14684887}}
__TOC__
 
</StructureSection>
==About this Structure==
1IUQ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Cucurbita_moschata Cucurbita moschata]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IUQ OCA].
 
==Reference==
Substrate recognition and selectivity of plant glycerol-3-phosphate acyltransferases (GPATs) from Cucurbita moscata and Spinacea oleracea., Tamada T, Feese MD, Ferri SR, Kato Y, Yajima R, Toguri T, Kuroki R, Acta Crystallogr D Biol Crystallogr. 2004 Jan;60(Pt 1):13-21. Epub 2003, Dec 18. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14684887 14684887]
[[Category: Cucurbita moschata]]
[[Category: Cucurbita moschata]]
[[Category: Glycerol-3-phosphate O-acyltransferase]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Feese MD]]
[[Category: Feese, M D.]]
[[Category: Kato Y]]
[[Category: Kato, Y.]]
[[Category: Kuroki R]]
[[Category: Kuroki, R.]]
[[Category: Tamada T]]
[[Category: Tamada, T.]]
[[Category: Four helix bundle]]
[[Category: Open twisted alpha/beta]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul  1 14:02:09 2008''

Latest revision as of 07:18, 9 October 2024

The 1.55 A Crystal Structure of Glycerol-3-Phosphate Acyltransferase

1iuq, resolution 1.55Å

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