2e2e: Difference between revisions

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[[Image:2e2e.jpg|left|200px]]


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==TPR domain of NrfG mediates the complex formation between heme lyase and formate-dependent nitrite reductase in Escherichia Coli O157:H7==
The line below this paragraph, containing "STRUCTURE_2e2e", creates the "Structure Box" on the page.
<StructureSection load='2e2e' size='340' side='right'caption='[[2e2e]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[2e2e]] is a 2 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=2E2E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2E2E FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.05&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=IMD:IMIDAZOLE'>IMD</scene></td></tr>
{{STRUCTURE_2e2e|  PDB=2e2e  |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2e2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e2e OCA], [https://pdbe.org/2e2e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2e2e RCSB], [https://www.ebi.ac.uk/pdbsum/2e2e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2e2e ProSAT]</span></td></tr>
 
</table>
'''TPR domain of NrfG mediates the complex formation between heme lyase and formate-dependent nitrite reductase in Escherichia Coli O157:H7'''
== Function ==
 
[https://www.uniprot.org/uniprot/NRFG_ECO57 NRFG_ECO57] Required for formate-dependent nitrite reduction. Not required for the biosynthesis of any of the c-type cytochromes nor for the secretion of the periplasmic cytochromes.
 
== Evolutionary Conservation ==
==Overview==
[[Image:Consurf_key_small.gif|200px|right]]
Escherichia coli synthesize C-type cytochromes only during anaerobic growth in media supplemented with nitrate and nitrite. The reduction of nitrate to ammonium in the periplasm of Escherichia coli involves two separate periplasmic enzymes, nitrate reductase and nitrite reductase. The nitrite reductase involved, NrfA, contains cytochrome C and is synthesized coordinately with a membrane-associated cytochrome C, NrfB, during growth in the presence of nitrite or in limiting nitrate concentrations. The genes NrfE, NrfF, and NrfG are required for the formate-dependent nitrite reduction pathway, which involves at least two C-type cytochrome proteins, NrfA and NrfB. The NrfE, NrfF, and NrfG genes (heme lyase complex) are involved in the maturation of a special C-type cytochrome, apocytochrome C (apoNrfA), to cytochrome C (NrfA) by transferring a heme to the unusual heme binding motif of the Cys-Trp-Ser-Cys-Lys sequence in apoNrfA protein. Thus, in order to further investigate the roles of NrfG in the formation of heme lyase complex (NrfEFG) and in the interaction between heme lyase complex and formate-dependent nitrite reductase (NrfA), we determined the crystal structure of NrfG at 2.05 A. The structure of NrfG showed that the contact between heme lyase complex (NrfEFG) and NrfA is accomplished via a TPR domain in NrfG which serves as a binding site for the C-terminal motif of NrfA. The portion of NrfA that binds to TPR domain of NrfG has a unique secondary motif, a helix followed by about a six-residue C-terminal loop (the so called "hook conformation"). This study allows us to better understand the mechanism of special C-type cytochrome assembly during the maturation of formate-dependent nitrite reductase, and also adds a new TPR binding conformation to the list of TPR-mediated protein-protein interactions.
Check<jmol>
 
  <jmolCheckbox>
==About this Structure==
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/e2/2e2e_consurf.spt"</scriptWhenChecked>
2E2E 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=2E2E OCA].  
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
 
    <text>to colour the structure by Evolutionary Conservation</text>
==Reference==
  </jmolCheckbox>
TPR domain of NrfG mediates complex formation between heme lyase and formate-dependent nitrite reductase in Escherichia coli O157:H7., Han D, Kim K, Oh J, Park J, Kim Y, Proteins. 2008 Feb 15;70(3):900-14. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17803240 17803240]
</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=2e2e ConSurf].
<div style="clear:both"></div>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Han, D.]]
[[Category: Han D]]
[[Category: Kim, K.]]
[[Category: Kim K]]
[[Category: Kim, Y.]]
[[Category: Kim Y]]
[[Category: Oh, J.]]
[[Category: Oh J]]
[[Category: Park, J.]]
[[Category: Park J]]
[[Category: Crystal structure]]
[[Category: Cytochrome c biogenesis]]
[[Category: Formate-dependent nitrite reductase complex]]
[[Category: Lyase]]
[[Category: Nrfg]]
[[Category: O157:h7 edl933]]
[[Category: Tpr]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 01:47:35 2008''

Latest revision as of 13:48, 13 March 2024

TPR domain of NrfG mediates the complex formation between heme lyase and formate-dependent nitrite reductase in Escherichia Coli O157:H7

2e2e, resolution 2.05Å

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