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2c42

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Revision as of 08:44, 23 May 2018

Crystal Structure Of Pyruvate-Ferredoxin Oxidoreductase From Desulfovibrio africanus

Structural highlights

2c42 is a 2 chain structure with sequence from Desulfovibrio africanus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , ,
Related:	1b0p, 1kek, 2pda, 2c3m, 2c3o, 2c3p, 2c3u, 2c3y
Activity:	Pyruvate synthase, with EC number 1.2.7.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[P94692_DESAF] Oxidoreductase required for the transfer of electrons from pyruvate to flavodoxin (By similarity).[PIRNR:PIRNR000159]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Pyruvate-ferredoxin oxidoreductases (PFOR) are unique among thiamine pyrophosphate (ThDP)-containing enzymes in giving rise to a rather stable cofactor-based free-radical species upon the decarboxylation of their first substrate, pyruvate. We have obtained snapshots of unreacted and partially reacted (probably as a tetrahedral intermediate) pyruvate-PFOR complexes at different time intervals. We conclude that pyruvate decarboxylation involves very limited substrate-to-product movements but a significant displacement of the thiazolium moiety of ThDP. In this respect, PFOR seems to differ substantially from other ThDP-containing enzymes, such as transketolase and pyruvate decarboxylase. In addition, exposure of PFOR to oxygen in the presence of pyruvate results in significant inhibition of catalytic activity, both in solution and in the crystals. Examination of the crystal structure of inhibited PFOR suggests that the loss of activity results from oxime formation at the 4' amino substituent of the pyrimidine moiety of ThDP.

Flexibility of thiamine diphosphate revealed by kinetic crystallographic studies of the reaction of pyruvate-ferredoxin oxidoreductase with pyruvate.,Cavazza C, Contreras-Martel C, Pieulle L, Chabriere E, Hatchikian EC, Fontecilla-Camps JC Structure. 2006 Feb;14(2):217-24. PMID:16472741^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Cavazza C, Contreras-Martel C, Pieulle L, Chabriere E, Hatchikian EC, Fontecilla-Camps JC. Flexibility of thiamine diphosphate revealed by kinetic crystallographic studies of the reaction of pyruvate-ferredoxin oxidoreductase with pyruvate. Structure. 2006 Feb;14(2):217-24. PMID:16472741 doi:10.1016/j.str.2005.10.013

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2c42"

@@ Line 1: / Line 1: @@
 ==Crystal Structure Of Pyruvate-Ferredoxin Oxidoreductase From Desulfovibrio africanus==
 <StructureSection load='2c42' size='340' side='right' caption='[[2c42]], [[Resolution|resolution]] 1.78&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1b0p|1b0p]], [[1kek|1kek]], [[2pda|2pda]], [[2c3m|2c3m]], [[2c3o|2c3o]], [[2c3p|2c3p]], [[2c3u|2c3u]], [[2c3y|2c3y]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Pyruvate_synthase Pyruvate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.2.7.1 1.2.7.1] </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=2c42 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c42 OCA], [http://pdbe.org/2c42 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2c42 RCSB], [http://www.ebi.ac.uk/pdbsum/2c42 PDBsum]</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=2c42 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c42 OCA], [http://pdbe.org/2c42 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2c42 RCSB], [http://www.ebi.ac.uk/pdbsum/2c42 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2c42 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 14: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/c4/2c42_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/c4/2c42_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 44: / Line 45: @@
 [[Category: Hatchikian, E C]]
 [[Category: Pieulle, L]]
+[[Category: 4fe-4]]
 [[Category: Electron transport]]
 [[Category: Iron]]

2c42

From Proteopedia

Revision as of 08:44, 23 May 2018

Crystal Structure Of Pyruvate-Ferredoxin Oxidoreductase From Desulfovibrio africanus

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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