3ftn

<StructureSection load='3ftn' size='340' side='right' caption='[[3ftn]], [[Resolution|resolution]] 2.19&Aring;' scene=''>

<table><tr><td colspan='2'>[[3ftn]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"clostridium_rubrum"_ng_and_vaughn_1963 "clostridium rubrum" ng and vaughn 1963]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FTN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3FTN FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Alcohol_dehydrogenase_(NADP(+)) Alcohol dehydrogenase (NADP(+))], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.2 1.1.1.2] </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=3ftn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ftn OCA], [http://pdbe.org/3ftn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3ftn RCSB], [http://www.ebi.ac.uk/pdbsum/3ftn PDBsum]</span></td></tr>

[[http://www.uniprot.org/uniprot/ADH_THEBR ADH_THEBR]] Alcohol dehydrogenase with a preference for medium chain secondary alcohols, such as 2-butanol and isopropanol. Has very low activity with primary alcohols, such as ethanol. Under physiological conditions, the enzyme reduces aldehydes and 2-ketones to produce secondary alcohols. Is also active with acetaldehyde and propionaldehyde.

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ft/3ftn_consurf.spt"</scriptWhenChecked>

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== Publication Abstract from PubMed ==

The cofactor-binding domains (residues 153-295) of the alcohol dehydrogenases from the thermophile Thermoanaerobacter brockii (TbADH), the mesophilic bacterium Clostridium beijerinckii (CbADH), and the protozoan parasite Entamoeba histolytica (EhADH1) have been exchanged. Three chimeras have been constructed. In the first chimera, the cofactor-binding domain of thermophilic TbADH was replaced with the cofactor-binding domain of its mesophilic counterpart CbADH [chimera Chi21((TCT))]. This domain exchange significantly destabilized the parent thermophilic enzyme (DeltaT(1/2) = -18 degrees C). The reverse exchange in CbADH [chimera Chi22((CTC))], however, had little effect on the thermal stability of the parent mesophilic protein. Furthermore, substituting the cofactor-binding domain of TbADH with the homologous domain of EhADH1 [chimera Chi23((TET))] substantially reduced the thermal stability of the thermophilic ADH (DeltaT(1/2) = -51 degrees C) and impeded the oligomerization of the enzyme. All three chimeric proteins and one of their site-directed mutants were crystallized, and their three-dimensional (3D) structures were determined. Comparison of the 3D structures of the chimeras and the chimeric mutant with the structures of their parent ADHs showed no significant changes to their Calpha chains, suggesting that the difference in the thermal stability of the three parent ADHs and their chimeric mutants could be due to a limited number of substitutions located at strategic positions, mainly at the oligomerization interfaces. Indeed, stabilization of the chimeras was achieved, to a significant extent, either by introduction of a proline residue at a strategic position in the major horse liver ADH-type dimerization interface (DeltaT(1/2) = 35 degrees C) or by introduction of intersubunit electrostatic interactions (DeltaT(1/2) = 6 degrees C).

Biochemical and Structural Properties of Chimeras Constructed by Exchange of Cofactor-Binding Domains in Alcohol Dehydrogenases from Thermophilic and Mesophilic Microorganisms.,Goihberg E, Peretz M, Tel-Or S, Dym O, Shimon L, Frolow F, Burstein Y Biochemistry. 2010 Feb 9. PMID:20102159<ref>PMID:20102159</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 3ftn" style="background-color:#fffaf0;"></div>

*[[Chimera of alcohol dehydrogenase by exchange of the cofactor binding domain res 153-295 of T. brockii ADH by C. beijerinckii ADH|Chimera of alcohol dehydrogenase by exchange of the cofactor binding domain res 153-295 of T. brockii ADH by C. beijerinckii ADH]]

*[[Tetrameric alcohol dehydrogenases|Tetrameric alcohol dehydrogenases]]

[[Category: Clostridium rubrum ng and vaughn 1963]]

[[Category: Burstein, Y]]

[[Category: Frolow, F]]

[[Category: Goihberg, E]]

[[Category: Shimon, L]]

[[Category: Bacterial alcohol dehydrogenase]]

[[Category: Chimera]]

[[Category: Oxydoreductase]]