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| | ==Solution structure of the E. coli Tat proofreading chaperone protein NapD== | | ==Solution structure of the E. coli Tat proofreading chaperone protein NapD== |
| - | <StructureSection load='2jsx' size='340' side='right'caption='[[2jsx]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | + | <StructureSection load='2jsx' size='340' side='right'caption='[[2jsx]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2jsx]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecoli Ecoli]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JSX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2JSX FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2jsx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JSX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JSX FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">napD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=2jsx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jsx OCA], [http://pdbe.org/2jsx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2jsx RCSB], [http://www.ebi.ac.uk/pdbsum/2jsx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2jsx ProSAT]</span></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=2jsx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jsx OCA], [https://pdbe.org/2jsx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jsx RCSB], [https://www.ebi.ac.uk/pdbsum/2jsx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jsx ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/NAPD_ECOLI NAPD_ECOLI]] Plays a role in the correct assembly of subunits of the periplasmic NapAB enzyme. | + | [https://www.uniprot.org/uniprot/NAPD_ECOLI NAPD_ECOLI] Plays a role in the correct assembly of subunits of the periplasmic NapAB enzyme. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Ecoli]] | + | [[Category: Escherichia coli K-12]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Sargent, F]] | + | [[Category: Sargent F]] |
| - | [[Category: Spronk, C A.E M]] | + | [[Category: Spronk CAEM]] |
| - | [[Category: Vuister, G W]] | + | [[Category: Vuister GW]] |
| - | [[Category: Chaperone]]
| + | |
| - | [[Category: Cytoplasm]]
| + | |
| - | [[Category: Napd]]
| + | |
| - | [[Category: Proofreading]]
| + | |
| - | [[Category: Protein]]
| + | |
| - | [[Category: Tat]]
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| Structural highlights
Function
NAPD_ECOLI Plays a role in the correct assembly of subunits of the periplasmic NapAB enzyme.
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 twin-arginine transport (Tat) system is dedicated to the translocation of folded proteins across the bacterial cytoplasmic membrane. Proteins are targeted to the Tat system by signal peptides containing a twin-arginine motif. In Escherichia coli, many Tat substrates bind redox-active cofactors in the cytoplasm before transport. Coordination of cofactor insertion with protein export involves a "Tat proofreading" process in which chaperones bind twin-arginine signal peptides, thus preventing premature export. The initial Tat signal-binding proteins described belonged to the TorD family, which are required for assembly of N- and S-oxide reductases. Here, we report that E. coli NapD is a Tat signal peptide-binding chaperone involved in biosynthesis of the Tat-dependent nitrate reductase NapA. NapD binds tightly and specifically to the NapA twin-arginine signal peptide and suppresses signal peptide translocation activity such that transport via the Tat pathway is retarded. High-resolution, heteronuclear, multidimensional NMR spectroscopy reveals the 3D solution structure of NapD. The chaperone adopts a ferredoxin-type fold, which is completely distinct from the TorD family. Thus, NapD represents a new family of twin-arginine signal-peptide-binding proteins.
Structural diversity in twin-arginine signal peptide-binding proteins.,Maillard J, Spronk CA, Buchanan G, Lyall V, Richardson DJ, Palmer T, Vuister GW, Sargent F Proc Natl Acad Sci U S A. 2007 Oct 2;104(40):15641-6. Epub 2007 Sep 27. PMID:17901208[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Maillard J, Spronk CA, Buchanan G, Lyall V, Richardson DJ, Palmer T, Vuister GW, Sargent F. Structural diversity in twin-arginine signal peptide-binding proteins. Proc Natl Acad Sci U S A. 2007 Oct 2;104(40):15641-6. Epub 2007 Sep 27. PMID:17901208
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