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[[Image:1fdi.gif|left|200px]]
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{{STRUCTURE_1fdi|  PDB=1fdi  |  SCENE=  }}
'''OXIDIZED FORM OF FORMATE DEHYDROGENASE H FROM E. COLI COMPLEXED WITH THE INHIBITOR NITRITE'''


==OXIDIZED FORM OF FORMATE DEHYDROGENASE H FROM E. COLI COMPLEXED WITH THE INHIBITOR NITRITE==
<StructureSection load='1fdi' size='340' side='right'caption='[[1fdi]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1fdi]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FDI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FDI 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]] 2.9&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=6MO:MOLYBDENUM(VI)+ION'>6MO</scene>, <scene name='pdbligand=MGD:2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE+GUANOSINE+DINUCLEOTIDE'>MGD</scene>, <scene name='pdbligand=NO2:NITRITE+ION'>NO2</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=1fdi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fdi OCA], [https://pdbe.org/1fdi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fdi RCSB], [https://www.ebi.ac.uk/pdbsum/1fdi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fdi ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FDHF_ECOLI FDHF_ECOLI] Decomposes formic acid to hydrogen and carbon dioxide under anaerobic conditions in the absence of exogenous electron acceptors.
== 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/fd/1fdi_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=1fdi ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Formate dehydrogenase H from Escherichia coli contains selenocysteine (SeCys), molybdenum, two molybdopterin guanine dinucleotide (MGD) cofactors, and an Fe4S4 cluster at the active site and catalyzes the two-electron oxidation of formate to carbon dioxide. The crystal structures of the oxidized [Mo(VI), Fe4S4(ox)] form of formate dehydrogenase H (with and without bound inhibitor) and the reduced [Mo(IV), Fe4S4(red)] form have been determined, revealing a four-domain alphabeta structure with the molybdenum directly coordinated to selenium and both MGD cofactors. These structures suggest a reaction mechanism that directly involves SeCys140 and His141 in proton abstraction and the molybdenum, molybdopterin, Lys44, and the Fe4S4 cluster in electron transfer.


==Overview==
Crystal structure of formate dehydrogenase H: catalysis involving Mo, molybdopterin, selenocysteine, and an Fe4S4 cluster.,Boyington JC, Gladyshev VN, Khangulov SV, Stadtman TC, Sun PD Science. 1997 Feb 28;275(5304):1305-8. PMID:9036855<ref>PMID:9036855</ref>
Formate dehydrogenase H from Escherichia coli contains selenocysteine (SeCys), molybdenum, two molybdopterin guanine dinucleotide (MGD) cofactors, and an Fe4S4 cluster at the active site and catalyzes the two-electron oxidation of formate to carbon dioxide. The crystal structures of the oxidized [Mo(VI), Fe4S4(ox)] form of formate dehydrogenase H (with and without bound inhibitor) and the reduced [Mo(IV), Fe4S4(red)] form have been determined, revealing a four-domain alphabeta structure with the molybdenum directly coordinated to selenium and both MGD cofactors. These structures suggest a reaction mechanism that directly involves SeCys140 and His141 in proton abstraction and the molybdenum, molybdopterin, Lys44, and the Fe4S4 cluster in electron transfer.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1FDI is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FDI OCA].
</div>
<div class="pdbe-citations 1fdi" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Crystal structure of formate dehydrogenase H: catalysis involving Mo, molybdopterin, selenocysteine, and an Fe4S4 cluster., Boyington JC, Gladyshev VN, Khangulov SV, Stadtman TC, Sun PD, Science. 1997 Feb 28;275(5304):1305-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9036855 9036855]
*[[Formate dehydrogenase 3D structures|Formate dehydrogenase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Formate dehydrogenase]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Boyington JC]]
[[Category: Boyington, J C.]]
[[Category: Sun PD]]
[[Category: Sun, P D.]]
[[Category: Anaerobic]]
[[Category: Dehydrogenase]]
[[Category: Fe4s4]]
[[Category: Formate]]
[[Category: Iron sulfur cluster]]
[[Category: Mgd]]
[[Category: Molybdenum]]
[[Category: Molybdopterin]]
[[Category: Molybdopterin guanine dinucleotide]]
[[Category: Mpt]]
[[Category: Oxidoreductase]]
[[Category: Secy]]
[[Category: Selenium]]
[[Category: Selenocysteine]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 16:12:06 2008''
Retrieved from "https://proteopedia.org/1fdi"