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New page: left|200px<br /> <applet load="2a1t" size="450" color="white" frame="true" align="right" spinBox="true" caption="2a1t, resolution 2.80Å" /> '''Structure of the hu...
 
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[[Image:2a1t.gif|left|200px]]<br />
<applet load="2a1t" size="450" color="white" frame="true" align="right" spinBox="true"
caption="2a1t, resolution 2.80&Aring;" />
'''Structure of the human MCAD:ETF E165betaA complex'''<br />


==Overview==
==Structure of the human MCAD:ETF E165betaA complex==
Crystal structures of protein complexes with electron-transferring, flavoprotein (ETF) have revealed a dual protein-protein interface with one, region serving as anchor while the ETF FAD domain samples available space, within the complex. We show that mutation of the conserved Glu-165beta in, human ETF leads to drastically modulated rates of interprotein electron, transfer with both medium chain acyl-CoA dehydrogenase and dimethylglycine, dehydrogenase. The crystal structure of free E165betaA ETF is essentially, identical to that of wild-type ETF, but the crystal structure of the, E165betaA ETF.medium chain acyl-CoA dehydrogenase complex reveals clear, electron density for the FAD domain in a position optimal for fast, interprotein electron transfer. Based on our observations, we present a, dynamic multistate model for conformational sampling that for the, wild-type ETF. medium chain acyl-CoA dehydrogenase complex involves random, motion between three distinct positions for the ETF FAD domain. ETF, Glu-165beta plays a key role in stabilizing positions incompatible with, fast interprotein electron transfer, thus ensuring high rates of complex, dissociation.
<StructureSection load='2a1t' size='340' side='right'caption='[[2a1t]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2a1t]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A1T OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2A1T FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene></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=2a1t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a1t OCA], [https://pdbe.org/2a1t PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2a1t RCSB], [https://www.ebi.ac.uk/pdbsum/2a1t PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2a1t ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/ACADM_HUMAN ACADM_HUMAN] Defects in ACADM are the cause of acyl-CoA dehydrogenase medium-chain deficiency (ACADMD) [MIM:[https://omim.org/entry/201450 201450]. It is an autosomal recessive disease which causes fasting hypoglycemia, hepatic dysfunction, and encephalopathy, often resulting in death in infancy.<ref>PMID:2393404</ref> <ref>PMID:2394825</ref> <ref>PMID:2251268</ref> <ref>PMID:1684086</ref> <ref>PMID:1902818</ref> <ref>PMID:1671131</ref> <ref>PMID:8198141</ref> <ref>PMID:7603790</ref> <ref>PMID:7929823</ref> <ref>PMID:9158144</ref> <ref>PMID:9882619</ref> <ref>PMID:10767181</ref> <ref>PMID:11349232</ref> <ref>PMID:11409868</ref> <ref>PMID:11486912</ref>
== Function ==
[https://www.uniprot.org/uniprot/ACADM_HUMAN ACADM_HUMAN] This enzyme is specific for acyl chain lengths of 4 to 16.
== 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/a1/2a1t_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=2a1t ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Crystal structures of protein complexes with electron-transferring flavoprotein (ETF) have revealed a dual protein-protein interface with one region serving as anchor while the ETF FAD domain samples available space within the complex. We show that mutation of the conserved Glu-165beta in human ETF leads to drastically modulated rates of interprotein electron transfer with both medium chain acyl-CoA dehydrogenase and dimethylglycine dehydrogenase. The crystal structure of free E165betaA ETF is essentially identical to that of wild-type ETF, but the crystal structure of the E165betaA ETF.medium chain acyl-CoA dehydrogenase complex reveals clear electron density for the FAD domain in a position optimal for fast interprotein electron transfer. Based on our observations, we present a dynamic multistate model for conformational sampling that for the wild-type ETF. medium chain acyl-CoA dehydrogenase complex involves random motion between three distinct positions for the ETF FAD domain. ETF Glu-165beta plays a key role in stabilizing positions incompatible with fast interprotein electron transfer, thus ensuring high rates of complex dissociation.


==Disease==
Stabilization of non-productive conformations underpins rapid electron transfer to electron-transferring flavoprotein.,Toogood HS, van Thiel A, Scrutton NS, Leys D J Biol Chem. 2005 Aug 26;280(34):30361-6. Epub 2005 Jun 23. PMID:15975918<ref>PMID:15975918</ref>
Known diseases associated with this structure: Acyl-CoA dehydrogenase, medium chain, deficiency of OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=607008 607008]], Glutaricaciduria, type IIA OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=608053 608053]], Glutaricaciduria, type IIB OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=130410 130410]]


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
2A1T is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with AMP and FAD as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Acyl-CoA_dehydrogenase Acyl-CoA dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.3.99.3 1.3.99.3] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2A1T OCA].
</div>
<div class="pdbe-citations 2a1t" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Stabilization of non-productive conformations underpins rapid electron transfer to electron-transferring flavoprotein., Toogood HS, van Thiel A, Scrutton NS, Leys D, J Biol Chem. 2005 Aug 26;280(34):30361-6. Epub 2005 Jun 23. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15975918 15975918]
*[[Acyl-CoA dehydrogenase 3D structures|Acyl-CoA dehydrogenase 3D structures]]
[[Category: Acyl-CoA dehydrogenase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Leys, D.]]
[[Category: Leys D]]
[[Category: Scrutton, N.S.]]
[[Category: Scrutton NS]]
[[Category: Thiel, A.Van.]]
[[Category: Toogood HS]]
[[Category: Toogood, H.S.]]
[[Category: Van Thiel A]]
[[Category: AMP]]
[[Category: FAD]]
[[Category: conformational sampling]]
[[Category: domain dynamics]]
[[Category: electron transfer]]
[[Category: fatty acid b-degradation]]
[[Category: protein:protein complex]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 12 20:44:45 2007''

Latest revision as of 08:16, 25 October 2023

Structure of the human MCAD:ETF E165betaA complex

2a1t, resolution 2.80Å

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