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1kqf

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Revision as of 21:38, 24 January 2018

FORMATE DEHYDROGENASE N FROM E. COLI

Structural highlights

1kqf is a 3 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , ,
Related:	1kqg
Activity:	Formate dehydrogenase, with EC number 1.2.1.2
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[FDNG_ECOLI] Formate dehydrogenase allows E.coli to use formate as major electron donor during anaerobic respiration, when nitrate is used as electron acceptor. The alpha subunit FdnG contains the formate oxidation site. Electrons are transferred from formate to menaquinone in the gamma subunit (FdnI), through the 4Fe-4S clusters in the beta subunit (FdnH). Formate dehydrogenase-N is part of a system that generates proton motive force, together with the dissimilatory nitrate reductase (Nar).^[1] [FDNI_ECOLI] Formate dehydrogenase allows E.coli to use formate as major electron donor during anaerobic respiration, when nitrate is used as electron acceptor. Subunit gamma is the cytochrome b556 component of the formate dehydrogenase-N, and also contains a menaquinone reduction site that receives electrons from the beta subunit (FdnH), through its hemes. Formate dehydrogenase-N is part of a system that generates proton motive force, together with the dissimilatory nitrate reductase (Nar).^[2] [FDNH_ECOLI] Formate dehydrogenase allows E.coli to use formate as major electron donor during anaerobic respiration, when nitrate is used as electron acceptor. The beta subunit FdnH is an electron transfer unit containing 4 iron-sulfur clusters; it serves as a conduit for electrons that are transferred from the formate oxidation site in the alpha subunit (FdnG) to the menaquinone associated with the gamma subunit (FdnI) of formate dehydrogenase-N. Formate dehydrogenase-N is part of a system that generates proton motive force, together with the dissimilatory nitrate reductase (Nar).^[3]

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

The structure of the membrane protein formate dehydrogenase-N (Fdn-N), a major component of Escherichia coli nitrate respiration, has been determined at 1.6 angstroms. The structure demonstrates 11 redox centers, including molybdopterin-guanine dinucleotides, five [4Fe-4S] clusters, two heme b groups, and a menaquinone analog. These redox centers are aligned in a single chain, which extends almost 90 angstroms through the enzyme. The menaquinone reduction site associated with a possible proton pathway was also characterized. This structure provides critical insights into the proton motive force generation by redox loop, a common mechanism among a wide range of respiratory enzymes.

Molecular basis of proton motive force generation: structure of formate dehydrogenase-N.,Jormakka M, Tornroth S, Byrne B, Iwata S Science. 2002 Mar 8;295(5561):1863-8. PMID:11884747^[4]

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

References

↑ Jormakka M, Tornroth S, Byrne B, Iwata S. Molecular basis of proton motive force generation: structure of formate dehydrogenase-N. Science. 2002 Mar 8;295(5561):1863-8. PMID:11884747 doi:10.1126/science.1068186
↑ Jormakka M, Tornroth S, Byrne B, Iwata S. Molecular basis of proton motive force generation: structure of formate dehydrogenase-N. Science. 2002 Mar 8;295(5561):1863-8. PMID:11884747 doi:10.1126/science.1068186
↑ Jormakka M, Tornroth S, Byrne B, Iwata S. Molecular basis of proton motive force generation: structure of formate dehydrogenase-N. Science. 2002 Mar 8;295(5561):1863-8. PMID:11884747 doi:10.1126/science.1068186
↑ Jormakka M, Tornroth S, Byrne B, Iwata S. Molecular basis of proton motive force generation: structure of formate dehydrogenase-N. Science. 2002 Mar 8;295(5561):1863-8. PMID:11884747 doi:10.1126/science.1068186

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/1kqf"

@@ Line 1: / Line 1: @@
 ==FORMATE DEHYDROGENASE N FROM E. COLI==
 <StructureSection load='1kqf' size='340' side='right' caption='[[1kqf]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1kqg|1kqg]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Formate_dehydrogenase Formate dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.2.1.2 1.2.1.2] </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=1kqf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kqf OCA], [http://pdbe.org/1kqf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1kqf RCSB], [http://www.ebi.ac.uk/pdbsum/1kqf 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=1kqf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kqf OCA], [http://pdbe.org/1kqf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1kqf RCSB], [http://www.ebi.ac.uk/pdbsum/1kqf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1kqf 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/kq/1kqf_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kq/1kqf_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 31: / Line 32: @@
 ==See Also==
-*[[Formate dehydrogenase|Formate dehydrogenase]]
 *[[Selenocysteine|Selenocysteine]]
 == References ==

1kqf

From Proteopedia

Revision as of 21:38, 24 January 2018

FORMATE DEHYDROGENASE N FROM E. COLI

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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