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New page: left|200px<br /> <applet load="1mc5" size="450" color="white" frame="true" align="right" spinBox="true" caption="1mc5, resolution 2.60Å" /> '''Ternary complex of ...
 
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[[Image:1mc5.gif|left|200px]]<br />
<applet load="1mc5" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1mc5, resolution 2.60&Aring;" />
'''Ternary complex of Human glutathione-dependent formaldehyde dehydrogenase with S-(hydroxymethyl)glutathione and NADH'''<br />


==Overview==
==Ternary complex of Human glutathione-dependent formaldehyde dehydrogenase with S-(hydroxymethyl)glutathione and NADH==
Human glutathione-dependent formaldehyde dehydrogenase plays an important, role in the metabolism of glutathione adducts such as, S-(hydroxymethyl)glutathione and S-nitrosoglutathione. The role of, specific active site residues in binding these physiologically important, substrates and the structural changes during the catalytic cycle of, glutathione-dependent formaldehyde dehydrogenase was examined by, determining the crystal structure of a ternary complex with, S-(hydroxymethyl)glutathione and the reduced coenzyme to 2.6 A resolution., The formation of the ternary complex caused the movement of the catalytic, domain toward the coenzyme-binding domain. This represents the first, observation of domain closure in glutathione-dependent formaldehyde, dehydrogenase in response to substrate binding. A water molecule adjacent, to the 2'-ribose hydroxyl of NADH suggests that the alcohol proton is, relayed to solvent directly from the coenzyme, rather than through the, action of the terminal histidine residue as observed in the proton relay, system for class I alcohol dehydrogenases. S-(Hydroxymethyl)glutathione is, directly coordinated to the active site zinc and forms interactions with, the highly conserved residues Arg114, Asp55, Glu57, and Thr46. The active, site zinc has a tetrahedral coordination environment with Cys44, His66, and Cys173 as the three protein ligands in addition to, S-(hydroxymethyl)glutathione. This is in contrast to zinc coordination in, the binary coenzyme complex where all of the ligands were contributed by, the enzyme and included Glu67 as the fourth protein ligand. This change in, zinc coordination is accomplished by an approximately 2.3 A movement of, the catalytic zinc.
<StructureSection load='1mc5' size='340' side='right'caption='[[1mc5]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1mc5]] is a 2 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=1MC5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MC5 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]] 2.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AHE:2-AMINO-4-[1-CARBOXYMETHYL-CARBAMOYL)-2-HYDROXYMETHYLSULFANYL-ETHYLCARBAMOYL]-BUTYRIC+ACID'>AHE</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1mc5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mc5 OCA], [https://pdbe.org/1mc5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1mc5 RCSB], [https://www.ebi.ac.uk/pdbsum/1mc5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1mc5 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ADHX_HUMAN ADHX_HUMAN] Class-III ADH is remarkably ineffective in oxidizing ethanol, but it readily catalyzes the oxidation of long-chain primary alcohols and the oxidation of S-(hydroxymethyl) glutathione.
== 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/mc/1mc5_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=1mc5 ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1MC5 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with ZN, K, PO4, NAD and AHE as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1MC5 OCA].
*[[Alcohol dehydrogenase 3D structures|Alcohol dehydrogenase 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
Human glutathione-dependent formaldehyde dehydrogenase. Structural changes associated with ternary complex formation., Sanghani PC, Bosron WF, Hurley TD, Biochemistry. 2002 Dec 24;41(51):15189-94. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=12484756 12484756]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Bosron, W.F.]]
[[Category: Bosron WF]]
[[Category: Hurley, T.D.]]
[[Category: Hurley TD]]
[[Category: Sanghani, P.C.]]
[[Category: Sanghani PC]]
[[Category: AHE]]
[[Category: K]]
[[Category: NAD]]
[[Category: PO4]]
[[Category: ZN]]
[[Category: class iii alcohol dehydrogenase]]
[[Category: glutathione-dependent formaldehyde dehydrogenase]]
[[Category: s-(hydroxymethyl)glutathione]]
 
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Retrieved from "https://proteopedia.org/1mc5"